作者:Alan R. Katritzky、Sandeep K. Singh、Hai-Ying He
DOI:10.1055/s-2002-33636
日期:——
Ethyl (4R)-3-(1H-1,2,3-benzotriazol-1-ylmethyl)-1,3-thiazolane-4-carboxylate (6) and 1-[1,3-benzothiazol-3(2H)-ylmethyl]-1H-1,2,3-benzotriazole (8) were readily prepared by reactions of L-cysteine ethyl ester hydrochloride and 1-aminothiophenol with benzotriazole and formaldehyde, respectively. Chiral thiazolidine esters 7a-c were obtained by reactions of intermediate 6 with organozinc derivatives
(4R)-3-(1H-1,2,3-benzotriazol-1-ylmethyl)-1,3-thiazolane-4-carboxylate (6) 和 1-[1,3-benzothiazol-3(2H)- ylmethyl]-1H-1,2,3-benzotriazole (8) 很容易通过 L-半胱氨酸乙酯盐酸盐和 1-氨基苯硫酚分别与苯并三唑和甲醛反应制备。手性噻唑烷酯 7a-c 通过中间体 6 与有机锌衍生物的反应获得。用格氏试剂对 8 进行亲核取代得到 N-取代的二氢苯并噻唑 9a-c。