Catalytic co-cyclisation of α,ω-cyanoalkynes with alkynes: a versatile chemo- and regio-selective synthesis of 2,3-substituted 5,6,7,8-tetrahydroquinolines and other cycloalka[1,2-b]pyridines
作者:David J. Brien、Alaric Naiman、K. Peter C. Vollhardt
DOI:10.1039/c39820000133
日期:——
α,ω-Cyanoalkynes are catalytically cocylised with alkynes in the presence of dicarbonyl(cyclopentadiecyl)-cobalt to furnish [b]annuiated pyridineschemo- and regio-selectively.
在二羰基(环戊二烯基)-钴的存在下,将α,ω-氰基炔烃与炔烃催化羰基化,以化学和区域选择性地提供[ b ]环氧化的吡啶。
8-Amino-5,6,7,8-tetrahydroquinoline derivatives
申请人:John Wyeth & Brother Limited
公开号:US04011229A1
公开(公告)日:1977-03-08
The invention provides 5,6,7,8-tetrahydroquinoline derivatives which are substituted at the 8-position by an amino group. The 8-amino compounds are intermediates for corresponding thiocarbamoyl derivatives which are anti-ulcer agents.
The invention relates to a process for preparing pyridine compounds which have a fused cycloalkane ring containing an amide, thioamide or nitrile group. The process involves treating a metal derivative of the pyridine compound with a silyl isocyanate or isothiocyanate and then subjecting the product to hydrolysis or alcoholysis.