A selective synthesis of 2-([2,2]paracyclophan-5-yl)pyrrole from 5-acetyl[2,2]paracyclophane via the Trofimov reaction
作者:Elena Yu Schmidt、Nadezhda V Zorina、Alexey B Zaitsev、Al'bina I Mikhaleva、Alexander M Vasil'tsov、Pierre Audebert、Gilles Clavier、Rachel Méallet-Renault、Robert B Pansu
DOI:10.1016/j.tetlet.2004.05.059
日期:2004.7
the key intermediate of the Trofimov reaction (pyrrole formation from ketoximes and acetylene), gives (120 °C, 30 min, DMSO) 2-([2,2]paracyclophan-5-yl)pyrrole in 74% yield. The intermediate 5-(1-vinyloxyiminoethyl)[2,2]paracyclophane has been synthesised in 78% yield by vinylation of the Cs-derivative of the oxime of 5-acetyl[2,2]paracyclophane with acetylene under pressure in the DMSO–n-pentane two-phase
Trofimov反应的关键中间体(酮肟和乙炔形成吡咯)5-(1-乙烯基氧亚氨基乙基)[2,2]对环环烷重排得到(120°C,30 min,DMSO)2-([2,2 [对环环基-5-基)吡咯,产率为74%。在DMSO中,在压力下,通过用乙炔将5-乙酰基[2,2]对环环烯肟的Cs衍生物乙烯基化,合成了中间体5-(1-乙烯基氧亚氨基乙基)[2,2]对环烷酮,收率为78%。正戊烷两相系统(70°C,5分钟)。