The rhodium-catalyzed selective oxidative Heck reaction of amides with allylic esters
作者:Yu-Yuan Hei、Jian-Lan Song、Xin-Chen Zhan、Xing-Guo Zhang、Chen-Liang Deng
DOI:10.1016/j.tetlet.2019.05.012
日期:2019.6
The Rh-catalyzed direct selectiveoxidation Heck reaction of benzamides with allylic esters has been developed for the synthesis of amides and isoquinolin-1-ones. According to the functional groups on N-atom, benzamides or isoquinolin-1-ones were synthesized under optimal reaction conditions. The ambient catalytic system has good functional group tolerance, afforded corresponding products in moderate
Palladium-catalyzed Csp<sup>2</sup>–H carbonylation of aromatic oximes: selective access to benzo[d][1,2]oxazin-1-ones and 3-methyleneisoindolin-1-ones
A selective palladium-catalyzed carbonylation of Csp2–H bonds with aromatic oximes for the synthesis of benzo[d][1,2]oxazin-1-ones and 3-methyleneisoindolin-1-ones has been developed.
Synthesis of Secondary Unsaturated Lactams via an Aza-Heck Reaction
作者:Scott A. Shuler、Guoyin Yin、Sarah B. Krause、Caroline M. Vesper、Donald A. Watson
DOI:10.1021/jacs.6b08932
日期:2016.10.26
The preparation of unsaturated secondary lactams via the palladium-catalyzed cyclization of O-phenyl hydroxamates onto a pendent alkene is reported. This method provides rapid access to a broad range of lactams that are widely useful building blocks in alkaloid synthesis. Mechanistic studies support an aza-Heck-type pathway.
Influence of
<i>N</i>
‐Substitution in 3‐Alkyl‐3‐hydroxyisoindolin‐1‐ones on the Stereoselectivity of Brønsted Acid‐Catalyzed Synthesis of 3‐Methyleneisoindolin‐1‐ones
作者:Nikola Topolovčan、Filip Duplić、Matija Gredičak
DOI:10.1002/ejoc.202100400
日期:2021.7.26
Brønsted acid-catalyzed dehydration of 3-alkyl-3-hydroxyisoindolin-1-ones is discussed. The reaction is efficiently catalyzed by methanesulfonic acid in acetonitrile and provides the corresponding 3-methyleneisoindolin-1-ones. The E/Z stereochemistry around the exocyclic double bond is in strong correlation with the size of the N-substituent. Selective formation of only one stereoisomer can be controlled