Mild generation of alkylidenecarbenes from (tosylazo)alkenes and silylvinyl triflates. Mode of decomposition and nature of the carbene intermediates
作者:Dennis P. Fox、Jon A. Bjork、Peter J. Stang
DOI:10.1021/jo00170a024
日期:1983.11
FOX, D. P.;BJORK, J. A.;STANG, P. J., J. ORG. CHEM., 1983, 48, N 22, 3994-4002
作者:FOX, D. P.、BJORK, J. A.、STANG, P. J.
DOI:——
日期:——
Brook/Elimination/Aldol Reaction (BEAR) Sequence for the Direct Preparation of Fluorinated Aldols from β,β-Difluoro-α-(trimethylsilyl)alcohols
作者:Mélanie Decostanzi、Arie Van Der Lee、Jean-Marc Campagne、Eric Leclerc
DOI:10.1002/adsc.201500481
日期:2015.10.12
reported. The corresponding fluoroenolates are formed in situ from stable β,β-difluoro-α-(trimethylsilyl)alcohols, through a base-mediated process involving a Brook rearrangement followed by a fluoride elimination, and are directly added to aromatic aldehydes. Two different sets of conditions were disclosed. The first one involves the stoichiometric addition of potassiumtert-butoxide (t-BuOK) while