Reactions of 2-Hydrazino- and 8-Hydrazinocyclohepta[<i>b</i>]pyrroles with Dimethyl Acetylenedicarboxylate
作者:Noritaka Abe、Kumiko Yatabe
DOI:10.1246/bcsj.64.1704
日期:1991.5
2-Hydrazinocyclohepta[b]pyrrole reacted with dimethyl acetylenedicarboxylate (DMAD) to give the hydrazones (2a), the pyrimidinone-fused cyclohepta[b]pyrrole (3), 1,2,4-triazinone-fused cyclohepta[b]pyrroles, and the 1,2-dihydro-3H-pyrazol-3-one derivative. Thermolysis of 2a gave 3 and tetramethyl pyrrole-2,3,4,5-tetracarboxylate. The reaction of ethyl cyclohepta[b]pyrrole-3-carboxylate with DMAD at
2-肼基环庚烷[b]吡咯与乙炔二羧酸二甲酯(DMAD)反应得到腙(2a),嘧啶酮稠合的环庚酮[b]吡咯(3),1,2,4-三嗪酮稠合的环庚酮[b]吡咯,和 1,2-二氢-3H-吡唑-3-酮衍生物。2a 的热解得到 3 和四甲基吡咯-2,3,4,5-四羧酸酯。环庚[b]吡咯-3-羧酸乙酯与DMAD在室温下反应得到腙和螺吡唑啉衍生物。