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。