Highly Chemo- and Stereoselective Intermolecular Coupling of Diazoacetates To Givecis-Olefins by Using Grubbs Second-Generation Catalyst
作者:David M. Hodgson、Deepshikha Angrish
DOI:10.1002/chem.200601692
日期:2007.4.16
Highly stereoselective formation of cis-2-ene-1,4-diesters by homo- and heterocoupling of alpha-diazoacetates in the presence of Grubbs second-generation catalyst is demonstrated. The dual reactivity of the catalyst in alkene metathesis and diazocoupling has been exploited in the synthesis of 12-26-membered macrocyclic dienyl dilactones by one-pot carbene dimerisation/ring-closing metathesis.
在第二代Grubbs催化剂存在下,通过α-重氮乙酸酯的均相和异相偶联,可以高度立体选择性地形成顺式-2-烯-1,4-二酯。在通过一锅式卡宾二聚/闭环复分解反应合成12-26元大环二烯基二内酯中,已经利用了催化剂在烯烃复分解和重氮偶联中的双重反应性。