Novel mono- and dialkylated prostynoic acid derivatives, prepared by condensation of a suitably substituted cyclopentene carboxylic acid or ester with a suitable organometallic alkynyl derivative, display valuable pharmacological properties. For example, they are potent inhibitors of gastric secretion.
The above-captioned compounds display anti-microbial activity, e.g. anti-bacterial and anti-fungal, and are, in addition, useful as intermediates in the manufacture of prostanoic acid derivatives.
Rhodium-catalyzed 1,4-addition of terminal alkynes to vinyl ketones
作者:Ronald V. Lerum、John D. Chisholm
DOI:10.1016/j.tetlet.2004.07.036
日期:2004.8
useful catalyst system for the 1,4-addition of alkynes to unsubstituted vinyl ketones. Best yields are obtained when the transformation is performed in benzene at reflux with an excess of vinyl ketone. Both aryl and alkyl substituted alkynes participate in the reaction. Primary alcohols and alkyl chlorides are well tolerated under these reaction conditions. The reaction also proceeds in aqueous solvent
Catalytic and Highly Efficient 1,4-Addition of Terminal Alkynes to Conjugated Enones by [RuCl<sub>2</sub>(<i>p</i>-cymene)]<sub>2</sub>/Pyrrolidine
作者:Sukbok Chang、Youngim Na、Eunjung Choi、Sunggak Kim
DOI:10.1021/ol016047m
日期:2001.6.1
[reaction: see text] A wide range of terminalalkynes was added to conjugated enones in a 1,4-fashion by a ruthenium catalyst in the presence of catalytic amounts of an amine base, and the corresponding gamma,delta-alkynyl ketones were obtained in good to excellent yields.
Ruthenium-Catalyzed Three-Component Coupling via Hydrative Conjugate Addition of Alkynes to Alkenes: One-Pot Synthesis of 1,4-Dicarbonyl Compounds
作者:Yiyun Chen、Sung Hwan Park、Chung Whan Lee、Chulbom Lee
DOI:10.1002/asia.201100266
日期:2011.8.1
A catalytic three‐way rendezvous: Terminal alkynes undergo metal vinylidene formation, anti‐Markovnikov hydration to give a metal acyl complex, and conjugate addition to produce synthetically useful 1,4‐dicarbonyl compounds under ruthenium catalysis. This one‐pot three‐component coupling reaction is a useful platform for further exploration in alkyne functionalization.