Day: January 25, 2022

Meng, QY; Schirmer, TE; Berger, AL; Donabauer, K; Konig, B in [Meng, Qing-Yuan; Schirmer, Tobias E.; Berger, Anna Lucia; Donabauer, Karsten; Koenig, Burkhard] Univ Regensburg, Inst Organ Chem, Fac Chem & Pharm, D-93040 Regensburg, Germany published Photocarboxylation of Benzylic C-H Bonds in 2019, Cited 58. Formula: C10H12O2. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

The carboxylation of sp(3)-hybridized C-H bonds with CO2 is a challenging transformation. Herein, we report a visible-light-mediated carboxylation of benzylic C-H bonds with CO2 into 2-arylpropionic acids under metal-free conditions. Photo-oxidized triisopropylsilanethiol was used as the hydrogen atom transfer catalyst to afford a benzylic radical that accepts an electron from the reduced form of 2,3,4,6-tetra(9H-carbazol-9-yl)-5-(1-phenylethyl)benzonitrile generated in situ. The resulting benzylic carbanion reacts with CO2 to generate the corresponding carboxylic acid after protonation. The reaction proceeded without the addition of any sacrificial electron donor, electron acceptor or stoichiometric additives. Moderate to good yields of the desired products were obtained in a broad substrate scope. Several drugs were successfully synthesized using the novel strategy.

Formula: C10H12O2. About 2-Phenylbutanoic acid, If you have any questions, you can contact Meng, QY; Schirmer, TE; Berger, AL; Donabauer, K; Konig, B or concate me.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

An article Lewis Acid-Catalyzed Selective Reductive Decarboxylative Pyridylation of N-Hydroxyphthalimide Esters: Synthesis of Congested Pyridine-Substituted Quaternary Carbons WOS:000494549700040 published article about C-H FUNCTIONALIZATION; DIRECT ALKYLATION; RADICAL PRECURSORS; CARBOXYLIC-ACIDS; DIRECT ARYLATION; AMINO-ACIDS; HETEROARENES; BOND; ALCOHOLS; ALKENES in [Gao, Liuzhou; Wang, Guoqiang; Cao, Jia; Chen, Hui; Gu, Yuming; Liu, Xueting; Cheng, Xu; Ma, Jing; Li, Shuhua] Nanjing Univ, Sch Chem & Chem Engn, Inst Theoret & Computat Chem, Minist Educ,Key Lab Mesoscop Chem, Nanjing 210093, Jiangsu, Peoples R China; [Cheng, Xu] Nanjing Univ, Sch Chem & Chem Engn, Inst Chem & Biomed Sci, Nanjing 210093, Jiangsu, Peoples R China in 2019, Cited 123. Name: 2-Phenylbutanoic acid. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7

A practical and efficient Lewis acid-catalyzed radical-radical coupling reaction of N-hydroxyphthalimide esters and 4-cyanopyridines with inexpensive bis(pinacolato)-diboron as reductant has been developed. With ZnCl2 as the catalyst, a wide range of quaternary 4-substituted pyridines, including highly congested diarylmethyl and triarylmethyl substituents, could be selectively obtained in moderate to good yields with broad functional group tolerance. Combined theoretical calculations and experimental studies indicate that the Lewis acid could coordinate with the cyano group of the pyridine-boryl radical to lower the activation barrier of the C-C coupling pathway, leading to the formation of 4-substituted pyridines. Moreover, it could also facilitate the decyanation/aromatization of the radical-radical coupling intermediate.

About 2-Phenylbutanoic acid, If you have any questions, you can contact Gao, LZ; Wang, GQ; Cao, J; Chen, H; Gu, YM; Liu, XT; Cheng, X; Ma, J; Li, SH or concate me.. Name: 2-Phenylbutanoic acid

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Category: Benzisoxazole. In 2019 J ORG CHEM published article about LIGHT PHOTOREDOX CATALYSIS; ALKYL RADICALS; 9-MESITYL-10-METHYLACRIDINIUM ION; OXIDATIVE DECARBOXYLATION; ESLICARBAZEPINE ACETATE; BENZOIC-ACIDS; AMINO-ACIDS; OLEFINATION; ARYLATION; 4-ACETOXY-2-AZETIDINONES in [Senaweera, Sameera; Cartwright, Kaitie C.; Tunge, Jon A.] Univ Kansas, Dept Chem, 1567 Irving Hill Rd, Lawrence, KS 66045 USA in 2019, Cited 82. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

Organic molecules bearing acetoxy moieties are important functionalities in natural products, drugs, and agricultural chemicals. Synthesis of such molecules via transition metal-catalyzed C-O bond formation can be achieved in the presence of a carefully chosen directing group to alleviate the challenges associated with regioselectivity. An alternative approach is to use ubiquitous carboxylic acids as starting materials and perform a decarboxylative coupling. Herein, we report conditions for a photocatalytic decarboxylative C-O bond formation reaction that provides rapid and facile access to the corresponding acetoxylated products. Mechanistic investigations suggest that the reaction operates via oxidation of the carboxylate followed by rapid decarboxylation and oxidation by Cu(OAc)(2).

Category: Benzisoxazole. Bye, fridends, I hope you can learn more about C10H12O2, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Bag, S; Petzold, M; Sur, A; Bhowmick, S; Werz, DB; Maiti, D in [Bag, Sukdev; Sur, Aishanee; Bhowmick, Suman; Maiti, Debabrata] Indian Inst Technol, Dept Chem, Mumbai 400076, Maharashtra, India; [Petzold, Martin; Werz, Daniel B.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Organ Chem, Hagenring 30, D-38106 Braunschweig, Germany published Palladium-Catalyzed Selective meta-C-H Deuteration of Arenes: Reaction Design and Applications in 2019, Cited 53. HPLC of Formula: C10H12O2. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

Deuterium-labeled compounds find wide applications in kinetic studies, and within the pharmaceutical industry. An easily removable pyrimidine-based auxiliary has been employed for the meta-C-H deuteration of arenes. The scope of this Pd-catalyzed deuteration using commercially available [D-1]- and [D-4]-acetic acid has been demonstrated by its application in phenylacetic acid and phenylmethanesulfonate derivatives. A detailed mechanistic study led us to explore the reversibility of the non-rate determining C-H activation step. The present study of meta-deuterium incorporation illustrates the template morphology in terms of selectivity. The applicability of this method has been demonstrated by the selective deuterium incorporation into various pharmaceuticals.

HPLC of Formula: C10H12O2. About 2-Phenylbutanoic acid, If you have any questions, you can contact Bag, S; Petzold, M; Sur, A; Bhowmick, S; Werz, DB; Maiti, D or concate me.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Authors Garcia-Lopez, D; Pavlovic, L; Hopmann, KH in AMER CHEMICAL SOC published article about MOLECULAR-ORBITAL METHODS; GAUSSIAN-TYPE BASIS; RHODIUM-CATALYZED HYDROCARBOXYLATION; AB-INITIO PSEUDOPOTENTIALS; CARBON-DIOXIDE; BASIS-SETS; CO2 INSERTION; DIRECT CARBOXYLATION; ALKYNES; BORACARBOXYLATION in [Garcia-Lopez, Diego; Pavlovic, Ljiljana; Hopmann, Kathrin H.] UiT Arctic Univ Norway, Hylleraas Ctr Quantum Mol Sci, Dept Chem, N-9037 Tromso, Norway in 2020, Cited 72. Recommanded Product: 90-27-7. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7

In transition metal-mediated carboxylation reactions, CO2 inserts into a metal-nucleophile bond. At the carboxylation transition state (TS), CO2 may interact with the metal (inner-sphere path) or may insert without being activated by the metal (outersphere path). Currently, there is no consensus as to which path prevails. In order to establish general predictions for the insertion of CO2 into metal-carbon bonds, we computationally analyze a series of experimentally reported Cu, Rh, and Pd complexes. Our focus is on carboxylation of aromatic substrates, including C(sp)(3 )benzyl and C-sp(2) aryl and alkenyl nucleophiles. We observe clear trends, where the nature of the nucleophile determines the preferred path: benzylic C-sp(3), nucleophiles favor outer-sphere and C-sp, systems favor inner-sphere CO2 insertion into the metal-carbon bond. An exception are Cu-benzyl bonds, where inner- and outer-sphere CO2 insertions are found to be competitive, highlighting the need to include both paths in mechanistic studies and in the rationalization of experimental results. For insertion into Pd-C-sp2 bonds, we find that the metal-CO2 interactions at the TS are weak and may be beyond 3 angstrom for sterically congested ligands. Nonetheless, on the basis of a comparison to other TSs, we argue that the CO2 insertion into Pd-C(sp2 )bonds should be classified as inner-sphere.

Recommanded Product: 90-27-7. Welcome to talk about 90-27-7, If you have any questions, you can contact Garcia-Lopez, D; Pavlovic, L; Hopmann, KH or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Meng, QY; Schirmer, TE; Berger, AL; Donabauer, K; Konig, B in [Meng, Qing-Yuan; Schirmer, Tobias E.; Berger, Anna Lucia; Donabauer, Karsten; Koenig, Burkhard] Univ Regensburg, Inst Organ Chem, Fac Chem & Pharm, D-93040 Regensburg, Germany published Photocarboxylation of Benzylic C-H Bonds in 2019, Cited 58. Formula: C10H12O2. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

The carboxylation of sp(3)-hybridized C-H bonds with CO2 is a challenging transformation. Herein, we report a visible-light-mediated carboxylation of benzylic C-H bonds with CO2 into 2-arylpropionic acids under metal-free conditions. Photo-oxidized triisopropylsilanethiol was used as the hydrogen atom transfer catalyst to afford a benzylic radical that accepts an electron from the reduced form of 2,3,4,6-tetra(9H-carbazol-9-yl)-5-(1-phenylethyl)benzonitrile generated in situ. The resulting benzylic carbanion reacts with CO2 to generate the corresponding carboxylic acid after protonation. The reaction proceeded without the addition of any sacrificial electron donor, electron acceptor or stoichiometric additives. Moderate to good yields of the desired products were obtained in a broad substrate scope. Several drugs were successfully synthesized using the novel strategy.

Formula: C10H12O2. About 2-Phenylbutanoic acid, If you have any questions, you can contact Meng, QY; Schirmer, TE; Berger, AL; Donabauer, K; Konig, B or concate me.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

An article Lewis Acid-Catalyzed Selective Reductive Decarboxylative Pyridylation of N-Hydroxyphthalimide Esters: Synthesis of Congested Pyridine-Substituted Quaternary Carbons WOS:000494549700040 published article about C-H FUNCTIONALIZATION; DIRECT ALKYLATION; RADICAL PRECURSORS; CARBOXYLIC-ACIDS; DIRECT ARYLATION; AMINO-ACIDS; HETEROARENES; BOND; ALCOHOLS; ALKENES in [Gao, Liuzhou; Wang, Guoqiang; Cao, Jia; Chen, Hui; Gu, Yuming; Liu, Xueting; Cheng, Xu; Ma, Jing; Li, Shuhua] Nanjing Univ, Sch Chem & Chem Engn, Inst Theoret & Computat Chem, Minist Educ,Key Lab Mesoscop Chem, Nanjing 210093, Jiangsu, Peoples R China; [Cheng, Xu] Nanjing Univ, Sch Chem & Chem Engn, Inst Chem & Biomed Sci, Nanjing 210093, Jiangsu, Peoples R China in 2019, Cited 123. Name: 2-Phenylbutanoic acid. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7

A practical and efficient Lewis acid-catalyzed radical-radical coupling reaction of N-hydroxyphthalimide esters and 4-cyanopyridines with inexpensive bis(pinacolato)-diboron as reductant has been developed. With ZnCl2 as the catalyst, a wide range of quaternary 4-substituted pyridines, including highly congested diarylmethyl and triarylmethyl substituents, could be selectively obtained in moderate to good yields with broad functional group tolerance. Combined theoretical calculations and experimental studies indicate that the Lewis acid could coordinate with the cyano group of the pyridine-boryl radical to lower the activation barrier of the C-C coupling pathway, leading to the formation of 4-substituted pyridines. Moreover, it could also facilitate the decyanation/aromatization of the radical-radical coupling intermediate.

About 2-Phenylbutanoic acid, If you have any questions, you can contact Gao, LZ; Wang, GQ; Cao, J; Chen, H; Gu, YM; Liu, XT; Cheng, X; Ma, J; Li, SH or concate me.. Name: 2-Phenylbutanoic acid

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Category: Benzisoxazole. In 2019 J ORG CHEM published article about LIGHT PHOTOREDOX CATALYSIS; ALKYL RADICALS; 9-MESITYL-10-METHYLACRIDINIUM ION; OXIDATIVE DECARBOXYLATION; ESLICARBAZEPINE ACETATE; BENZOIC-ACIDS; AMINO-ACIDS; OLEFINATION; ARYLATION; 4-ACETOXY-2-AZETIDINONES in [Senaweera, Sameera; Cartwright, Kaitie C.; Tunge, Jon A.] Univ Kansas, Dept Chem, 1567 Irving Hill Rd, Lawrence, KS 66045 USA in 2019, Cited 82. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

Organic molecules bearing acetoxy moieties are important functionalities in natural products, drugs, and agricultural chemicals. Synthesis of such molecules via transition metal-catalyzed C-O bond formation can be achieved in the presence of a carefully chosen directing group to alleviate the challenges associated with regioselectivity. An alternative approach is to use ubiquitous carboxylic acids as starting materials and perform a decarboxylative coupling. Herein, we report conditions for a photocatalytic decarboxylative C-O bond formation reaction that provides rapid and facile access to the corresponding acetoxylated products. Mechanistic investigations suggest that the reaction operates via oxidation of the carboxylate followed by rapid decarboxylation and oxidation by Cu(OAc)(2).

Category: Benzisoxazole. Bye, fridends, I hope you can learn more about C10H12O2, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Bag, S; Petzold, M; Sur, A; Bhowmick, S; Werz, DB; Maiti, D in [Bag, Sukdev; Sur, Aishanee; Bhowmick, Suman; Maiti, Debabrata] Indian Inst Technol, Dept Chem, Mumbai 400076, Maharashtra, India; [Petzold, Martin; Werz, Daniel B.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Organ Chem, Hagenring 30, D-38106 Braunschweig, Germany published Palladium-Catalyzed Selective meta-C-H Deuteration of Arenes: Reaction Design and Applications in 2019, Cited 53. HPLC of Formula: C10H12O2. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7.

Deuterium-labeled compounds find wide applications in kinetic studies, and within the pharmaceutical industry. An easily removable pyrimidine-based auxiliary has been employed for the meta-C-H deuteration of arenes. The scope of this Pd-catalyzed deuteration using commercially available [D-1]- and [D-4]-acetic acid has been demonstrated by its application in phenylacetic acid and phenylmethanesulfonate derivatives. A detailed mechanistic study led us to explore the reversibility of the non-rate determining C-H activation step. The present study of meta-deuterium incorporation illustrates the template morphology in terms of selectivity. The applicability of this method has been demonstrated by the selective deuterium incorporation into various pharmaceuticals.

HPLC of Formula: C10H12O2. About 2-Phenylbutanoic acid, If you have any questions, you can contact Bag, S; Petzold, M; Sur, A; Bhowmick, S; Werz, DB; Maiti, D or concate me.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics

Authors Garcia-Lopez, D; Pavlovic, L; Hopmann, KH in AMER CHEMICAL SOC published article about MOLECULAR-ORBITAL METHODS; GAUSSIAN-TYPE BASIS; RHODIUM-CATALYZED HYDROCARBOXYLATION; AB-INITIO PSEUDOPOTENTIALS; CARBON-DIOXIDE; BASIS-SETS; CO2 INSERTION; DIRECT CARBOXYLATION; ALKYNES; BORACARBOXYLATION in [Garcia-Lopez, Diego; Pavlovic, Ljiljana; Hopmann, Kathrin H.] UiT Arctic Univ Norway, Hylleraas Ctr Quantum Mol Sci, Dept Chem, N-9037 Tromso, Norway in 2020, Cited 72. Recommanded Product: 90-27-7. The Name is 2-Phenylbutanoic acid. Through research, I have a further understanding and discovery of 90-27-7

In transition metal-mediated carboxylation reactions, CO2 inserts into a metal-nucleophile bond. At the carboxylation transition state (TS), CO2 may interact with the metal (inner-sphere path) or may insert without being activated by the metal (outersphere path). Currently, there is no consensus as to which path prevails. In order to establish general predictions for the insertion of CO2 into metal-carbon bonds, we computationally analyze a series of experimentally reported Cu, Rh, and Pd complexes. Our focus is on carboxylation of aromatic substrates, including C(sp)(3 )benzyl and C-sp(2) aryl and alkenyl nucleophiles. We observe clear trends, where the nature of the nucleophile determines the preferred path: benzylic C-sp(3), nucleophiles favor outer-sphere and C-sp, systems favor inner-sphere CO2 insertion into the metal-carbon bond. An exception are Cu-benzyl bonds, where inner- and outer-sphere CO2 insertions are found to be competitive, highlighting the need to include both paths in mechanistic studies and in the rationalization of experimental results. For insertion into Pd-C-sp2 bonds, we find that the metal-CO2 interactions at the TS are weak and may be beyond 3 angstrom for sterically congested ligands. Nonetheless, on the basis of a comparison to other TSs, we argue that the CO2 insertion into Pd-C(sp2 )bonds should be classified as inner-sphere.

Recommanded Product: 90-27-7. Welcome to talk about 90-27-7, If you have any questions, you can contact Garcia-Lopez, D; Pavlovic, L; Hopmann, KH or send Email.

Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics