154001-04-4Relevant articles and documents
Preparation of Dihydrothiophenium-1-bis(ethoxycarbonyl)methylides and Their Recyclization with a Base
Yamagata, Kenji,Takaki, Mikiko,Ohkubo, Kimiko,Yamazaki, Motoyoshi
, p. 1263 - 1268 (2007/10/02)
The reaction of 4,5-dihydro-2-morpholino-(2-pyrrolidino and 2-piperidino)-3-thiophenecarbonitriles 1-3 with bis(ethoxycarbonyl)carbenoid afforded stable dihydrothiophenium-1-bis(ethoxycarbonyl)methylides 4-6.The recyclization of compounds 4-6 with bases g