An interesting synthesis of thieno[2,3-d][1,2,3]thiadiazole via decomposition/recyclization of 3-methoxycarbonyl-1H-thieno-[2,3-e][1,3,4]thiadiazine 4,4-dioxide
作者:Chad E. Stephens、J. Walter Sowell
DOI:10.1002/jhet.5570370133
日期:2000.1
Attempted hydrolysis of the ester of 3-methoxycarbonyl-1H-thieno[2,3-e][1,3,4]thiadiazine 4,4-dioxide (I) under acidic conditions gave the ring-contracted thieno[2,3-d][1,2,3]thiadiazole (V) instead of the expected carboxylic acid. In addition to a discussion of the reaction, a plausible mechanism is presented.
尝试在酸性条件下水解3-甲氧基羰基-1 H-噻吩并[2,3- e ] [1,3,4]噻二嗪4,4-二氧化物(I)的酯,得到环缩合的噻吩并[2,3] - d ] [1,2,3]噻二唑(V)而不是预期的羧酸。除了对反应的讨论之外,还提出了一个合理的机制。