One-pot synthesis of tropinone by tandem (domino) ene-type reactions of acetone silyl enol ethers
作者:Koichi Mikami、Hirofumi Ohmura
DOI:10.1039/b208066d
日期:2002.11.4
A syntheticapproach for tropane alkaloids on the basis of tandem (domino) ene-type reactions of acetone silyl enol ethers with iminium ions is shown to be triggered by intermolecular ene-type reactions followed by 6-(2,5) silatropic ene-type cyclizations.
Microflow electroorganic synthesis without supporting electrolyte
作者:Roberto Horcajada、Masayuki Okajima、Seiji Suga、Jun-ichi Yoshida
DOI:10.1039/b417388k
日期:——
Anodicmethoxylation of several organiccompounds has been successfully achieved in the absence of intentionally added supporting electrolyte using an electrochemical microflow system.
Preparation of azabicyclo-N-oxyls and the electrochemical oxidation of alcohols using them as mediators have been exploited. This oxidation was applicable to a transformation of sterically hindered secondary alcohols into the corresponding ketones in high yields. (C) 2007 Elsevier Ltd. All rights reserved.
A new [3 + 3]-type annelation useful for the formation of piperidine skeletons