Palladium-Catalyzed Carbonylation of Yne Esters Leading to γ-Alkylidene α,β-Unsaturated γ-Lactones
摘要:
graph The reaction of yne esters with carbon monoxide (1 atm) in the presence of palladium complexes gives bicyclic unsaturated lactone derivatives in good to high yields. The 2-pyridinyloxy group is a good leaving group among leaving groups examined.
Method for preparation of (2-hydroxy-3-oxo-cyclopent-1-enyl)-acetic acid esters
申请人:Tallinn University of Technology
公开号:US20140378698A1
公开(公告)日:2014-12-25
The invention relates to the method of preparation of compounds of formula I, the precursors of homocitric acid lactone and its salts, by coupling of the compounds of formula II with bromoacetic acid esters of formula III.
A Convenient Synthesis of t-Alkyl Esters of Amino Acids<sup>1a</sup>
作者:ARNULF VOLLMAR、MAX S. DUNN
DOI:10.1021/jo01073a020
日期:1960.3
Stereoselective synthesis of trifluoromethylated vinyl- and dienylphosphonates with γ-alkoxycarbonyl moiety
作者:Yanchang Shen、Ping Li
DOI:10.1016/j.jfluchem.2003.10.004
日期:2004.1
Trifluoromethylated vinyl- and dienylphosphonates with gamma-alkoxycarbonyl moiety have been synthesized via sequential transformations of bisphosphonates in 68-76% (three steps) yields with Z-isomers exclusively or predominantly. (C) 2003 Elsevier B.V. All rights reserved.
US8940920B2
申请人:——
公开号:US8940920B2
公开(公告)日:2015-01-27
Palladium-Catalyzed Carbonylation of Yne Esters Leading to γ-Alkylidene α,β-Unsaturated γ-Lactones
作者:Yasuyuki Harada、Yoshiya Fukumoto、Naoto Chatani
DOI:10.1021/ol0514956
日期:2005.9.1
graph The reaction of yne esters with carbon monoxide (1 atm) in the presence of palladium complexes gives bicyclic unsaturated lactone derivatives in good to high yields. The 2-pyridinyloxy group is a good leaving group among leaving groups examined.