作者:T.P. Andersen、A.-B.A.G. Ghattas、S.-O. Lawesson
DOI:10.1016/s0040-4020(01)91595-9
日期:1983.1
Ethyl esters 2 of N-acyl derivatives of glycine, S-alanine, S-phenylalanine, and S-proline, were thionated by use of 2,4 - bis(4 - methoxyphenyl) - 1,3,2,4 - dithiadiphosphetane 2,4-disulfide (Lawesson's Reagent) 1. The N-thioacyl compounds 3 were reacted with hydrazine hydrate and in most cases a ring-closure reaction took place, giving 1,2,4-triazine derivatives 4. The structural proofs of 4 were
甘氨酸,S-丙氨酸,S-苯丙氨酸和S-脯氨酸的N-酰基衍生物的乙酯2通过使用2,4-双(4-甲氧基苯基)-1,3,2,4-二硫代二膦烷2进行亚硫酰化,4-二硫键(Lawesson试剂)1。使N-硫酰基化合物3与水合肼反应,并且在大多数情况下发生闭环反应,得到1,2,4-三嗪衍生物4。通过1 H,13 C和15 N NMR光谱获得4的结构证明。