Condensed Diazepines. Synthesis of 1-R-3,4-Dihydro-5H-Benzothieno[2,3-d][1,2]Diazepin-4-Ones
摘要:
Novel 1-R-3,4-dihydro-5H-benzothieno[2,3-d][1,2]diazepin-4-ones have been prepared by the cyclization of 2-acyl(aroyl)benzo[b]thiophene-3-acetic acids or 1-R-benzothieno[2,3-c]pyr-3-ones with hydrazine hydrate.
作者:P.Mark Jackson、Christopher J. Moody、Pritom Shah
DOI:10.1016/s0040-4039(00)82201-7
日期:1988.1
Pyrano[3,4-b]thiophen-5-ones are stable thiophene-2,3-quinodimethanes that undergo Diels-Alder reaction with alkynes to give, after loss of carbon dioxide, benzothiophenes; dibenzothiophenes can be prepared similarly from the corresponding benzothiophene-2,3-quinodimethane equivalent.