Benzo[d]isoxazol-3-amine, cas is 36216-80-5, it is a common heterocyclic compound, the Benzisoxazole compound, its synthesis route is as follows.
A mixture of benzo[d]isoxazol-3-amine and a sulfonyl chloride in pyridine (1 ml.) was stirred at room temperature for 16 hours when a second portion of benzenesulfonyl chloride was added and stirred for an additional 64 hours. The reaction was concentrated and diluted with 5% aqueous HCI (1 ml.) and sonicated for a minimum of 30 minutes. The resulting precipitate was collected by filtration and purified either by preparative mass-directed HPLC (up to 50 mg of crude material) or by silica gel column chromatography (0-40% EtOAc/petroleum benzine 40-60 C) to give the desired product. See Table C for reaction components and amounts used as well as purification conditions.
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Reference£º
Patent; CTXT PTY LIMITED; STUPPLE, Paul, Anthony; LAGIAKOS, Helen, Rachel; MORROW, Benjamin, Joseph; FOITZIK, Richard, Charles; HEMLEY, Catherine, Fae; CAMERINO, Michelle, Ang; BOZIKIS, Ylva, Elisabet, Bergman; WALKER, Scott, Raymond; (321 pag.)WO2019/243491; (2019); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics