Asymmetric synthesis of di- and trisubstituted pyrrolidinones via zirconium-mediated intramolecular coupling of N-3-alkenyl carbamates
摘要:
N-3-Alkenyl carbamates, which are readily available in enantiomerically pure form, undergo a stereoselective intramolecular coupling under the effect of a Cp2ZrCl2/2n-BuLi reagent. The influence of the carbamate structure on the stereoselectivity was tested. The reaction gives an easy access to various di-and trisubstituted enantiopure pyrrolidinones. (c) 2007 Elsevier Ltd. All rights reserved.
Asymmetric synthesis of di- and trisubstituted pyrrolidinones via zirconium-mediated intramolecular coupling of N-3-alkenyl carbamates
摘要:
N-3-Alkenyl carbamates, which are readily available in enantiomerically pure form, undergo a stereoselective intramolecular coupling under the effect of a Cp2ZrCl2/2n-BuLi reagent. The influence of the carbamate structure on the stereoselectivity was tested. The reaction gives an easy access to various di-and trisubstituted enantiopure pyrrolidinones. (c) 2007 Elsevier Ltd. All rights reserved.
N-3-Alkenyl carbamates, which are readily available in enantiomerically pure form, undergo a stereoselective intramolecular coupling under the effect of a Cp2ZrCl2/2n-BuLi reagent. The influence of the carbamate structure on the stereoselectivity was tested. The reaction gives an easy access to various di-and trisubstituted enantiopure pyrrolidinones. (c) 2007 Elsevier Ltd. All rights reserved.