Iron-Catalyzed Dehydrative Alkylation of Propargyl Alcohol with Alkyl Peroxides To Form Substituted 1,3-Enynes
作者:Changqing Ye、Bo Qian、Yajun Li、Min Su、Daliang Li、Hongli Bao
DOI:10.1021/acs.orglett.8b01043
日期:2018.6.1
method for the generation of substituted 1,3-enynes, whose synthesis by other methods could be a challenge. The dehydrative decarboxylative cascade coupling reaction of propargyl alcohol with alkylperoxides is enabled by an iron catalyst and alkylating reagents. Primary, secondary, and tertiary alkyl groups can be introduced into 1,3-enynes, affording various substituted 1,3-enynes in moderate to good
Gold-Catalyzed Rearrangement of Alkynyl Donor–Acceptor Cyclopropanes To Construct Highly Functionalized Alkylidenecyclopentenes
作者:Huiyu Chen、Jing Zhang、David Zhigang Wang
DOI:10.1021/acs.orglett.5b00671
日期:2015.5.1
A gold-catalyzed 1,7-addition-cyclization-elimination cascade sequence performed on a range of alkynyl-substituted donor-acceptor-type cyclopropanes provides facile entry to highly functionalized exo-alkylidenecyclopentenes under very mild conditions. Isolation of the relevant allyl ether intermediate helped shed light on the reaction's mechanistic course.
1,2,3-Triazole: Unique Ligand in Promoting Iron-Catalyzed Propargyl Alcohol Dehydration
作者:Wuming Yan、Xiaohan Ye、Novruz G. Akhmedov、Jeffrey L. Petersen、Xiaodong Shi
DOI:10.1021/ol300778e
日期:2012.5.4
A 1,2,3-traizole-promoted Iron(III)-catalyzed propargyl alcohol dehydration was developed for the synthesis of conjugated enynes. The desired conjugated enynes were prepared in good to excellent yields (up to 95%) with a large substrate scope and excellent stereoselectivity (only Z-isomers).