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
An Efficient, Facile, and General Stereoselective Synthesis of Heterosubstituted Alkylidenecyclopropanes
作者:Ahmad Masarwa、Amnon Stanger、Ilan Marek
DOI:10.1002/anie.200702713
日期:2007.10.22
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
Regioselective Carbon–Carbon Bond Cleavage in the Oxidation of Cyclopropenylcarbinols
作者:Ahmad Basheer、Masaaki Mishima、Ilan Marek
DOI:10.1021/ol201581c
日期:2011.8.5
The strained double bond of cyclopropenylcarbinols undergoes a facile oxidation reaction to lead to unsaturated carbonyl derivatives. The distribution of the formed products depends on the relative stability of carbon-centered radical species, and the Sharpless kinetic resolution leads to enantiomerically pure Baylis–Hillman enal adducts.
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.