Fujima, Yoshito; Hirayama, Yoshihiro; Ikunaka, Masaya; Nishimoto, Yukifumi published an article about the compound: Methyl tetrahydrofuran-2-carboxylate( cas:37443-42-8,SMILESS:O=C(C1OCCC1)OC ).Synthetic Route of C6H10O3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:37443-42-8) through the article.
To develop a practical scalable approach to (R)-tetrahydrofuran-2-carboxylic acid (I), a chiral building block for furopenem, enantioselective hydrolysis of its esters is explored: When Et (±)-tetrahydrofuran-2-carboxylate (II, 2 M, 288 g/L) is digested by an Aspergillus melleus protease {0.2% (w/v)} in a 1.5 M potassium phosphate buffer (pH 8) for 20 h, enantioselective hydrolysis proceeds with E = 60 to give I in 94.4% ee. On separation from the leftover antipodal (S)-II by partition, I is treated with dicyclohexylamine in Me Et ketone/methanol (5:1) to precipitate the crystalline salt that contains I of >99% ee in 22% overall yield from II.
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Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics