Synthesis of Nitrogen-Substituted Methylenecyclopropanes by Strain-Driven Overman Rearrangement of Cyclopropenylmethyl Trichloroacetimidates
作者:James K. Howard、Chintan Amin、Brendan Lainhart、Jason A. Smith、Jack Rimington、Christopher J. T. Hyland
DOI:10.1021/jo501423u
日期:2014.9.5
Nitrogen-substituted methylenecyclopropanes have been prepared by a strain-driven Overman rearrangement of cyclopropenylmethyl trichloroacetimidates. The reaction proceeds at room temperature and without the need of a transition-metal catalyst. Furthermore, it has been shown that C-3-substituted cyclopropenylmethyl trichloroacetimidates undergo a hydrolytic ring-opening reaction to form allenylcarbinols
Enantiomerically Pure Cyclopropenylcarbinols as a Source of Chiral Alkylidenecyclopropane Derivatives
作者:Samah Simaan、Ahmad Masarwa、Philippe Bertus、Ilan Marek
DOI:10.1002/anie.200600556
日期:2006.6.12
Cyclopropenylcarbinol Derivatives as New Versatile Intermediates in Organic Synthesis: Application to the Formation of Enantiomerically Pure Alkylidenecyclopropane Derivatives
作者:Samah Simaan、Ahmad Masarwa、Elinor Zohar、Amnon Stanger、Philippe Bertus、Ilan Marek
DOI:10.1002/chem.200901074
日期:2009.8.24
The copper‐catalyzed carbomagnesiation (or hydrometalation) reaction of chiralcyclopropenylcarbinolderivatives, obtained by means of a kinetic resolution of secondary allylic alcohols, leads to an easy and straightforward preparation of enantiomericallypurealkylidenecyclopropanederivatives. The reaction mechanism is composed of a syn‐carbometalation followed by a syn‐elimination reaction. To gain
Copper-catalyzed hydride transfer from LiAlH4 for the formation of alkylidenecyclopropane derivatives
作者:Samah Simaan、Ilan Marek
DOI:10.1039/b817710d
日期:——
The copper-catalyzed addition of LiAlH(4) to cyclopropenylcarbinol leads to an easy and straightforward preparation of alkylidenecyclopropane derivative.