The reaction of 1-silylcyclopropyl anions with dichloromethyl methyl ether: the efficient synthesis of cyclopropyl silyl ketones via cyclopropylidene derivatives
作者:Toshiaki Nishizawa、Kenta Nakae、Mitsunori Honda、Ko-Ki Kunimoto、Masahito Segi
DOI:10.1016/j.tetlet.2009.12.145
日期:2010.3
The reaction of 1-silylcyclopropyl anions with dichloromethyl methyl ether is described. The reaction with an excess amount of dichloromethyl methyl ether gives the corresponding cyclopropylsilylketones in low yields. On the other hand, the reaction under basic conditions proceeded smoothly to afford the corresponding cyclopropylidene derivatives, exclusively. The resulting cyclopropylidene compounds
An efficient synthesis of cyclopropyl silyl ketones
作者:Mitsunori Honda、Kenta Nakae、Toshiaki Nishizawa、Mitsuhiro Suda、Ko-Ki Kunimoto、Masahito Segi
DOI:10.1016/j.tet.2011.10.013
日期:2011.12
exclusively obtained. The resulting cyclopropylidene compounds are subjected to protonolysis or trapping with electrophiles in a one-pot to give the cyclopropyl silyl ketone derivatives in good yields. Acidic treatment of derived cyclopropyl silyl ketone allows isomerization to give the thermodynamically favorable trans form exclusively.