Cesium Hydroxide: A Superior Base for the Catalytic Alkynylation of Aldehydes and Ketones and Catalytic Alkenylation of Nitriles
作者:Dimitrios Tzalis、Paul Knochel
DOI:10.1002/(sici)1521-3773(19990517)38:10<1463::aid-anie1463>3.0.co;2-h
日期:1999.5.17
The efficient addition of terminal alkynes to aldehydes or ketones to give propargyl alcohols in yields of 66-96 % can be achieved by activation with catalytic amounts of CsOH⋅H2 O [Eq. (a)]. A CsOH-catalyzed addition of acetonitrile derivatives to terminal alkynes is also possible.