A Pd(0)-Catalyzed Direct Dehydrative Coupling of Terminal Alkynes with Allylic Alcohols To Access 1,4-Enynes
作者:Yang-Xiong Li、Qing-Qing Xuan、Li Liu、Dong Wang、Yong-Jun Chen、Chao-Jun Li
DOI:10.1021/ja406025p
日期:2013.8.28
A direct dehydrative coupling of terminal alkynes with allylic alcohols catalyzed by Pd(PPh3)(4) with an N,P-ligand assisted by Ti(OiPr)(4) has been developed. The coupling reaction tolerates various functional groups, providing a valuable synthetic tool to access 1,4-enynes.
Nazarov Cyclization of Divinyl and Arylvinyl Epoxides: Application in the Synthesis of Resveratrol-Based Natural Products
作者:Gangarajula Sudhakar、Kovela Satish
DOI:10.1002/chem.201500362
日期:2015.4.20
New variation in the Nazarovcyclization has been developed by preparing divinyl and arylvinyl epoxides as pentadienyl cation precursors for the first time. Highly substituted cyclopentadienes, hydrindienes, and indenes were synthesized to demonstrate the compatibility of this reaction with substrates bearing a variety of substitutions and having different types of epoxides. Application of this method