Synthesis of <i>E</i>-Aryl Ethenesulfonamides: A Simple One-Pot, Two-Step Procedure from 1-Hydroxy-1-arylalkanes
作者:Andrea Aramini、Maria C. Cesta、Silvia Coniglio、Christian Bijani、Sandro Colagioia、Valerio D'Eli、Marcello Allegretti
DOI:10.1021/jo034770f
日期:2003.10.1
The unusual reactivity of 1-phenyl-1-ethanesulfonic acid in thionyl chloride was investigated. Mechanistic considerations led us to set up a new and efficient synthesis of E-arylethenesulfonamides starting from 1-hydroxy-1-arylalkanes. The easy availability of the starting materials and the straightforward, one-pot procedure make this process an attractive method for the preparation of these compounds
A novel heterogeneous catalytic hydrogenation hydrogenolysis strategy has been developed for the alpha-methylation of ketones via enaminones using DMF dimethyl acetal as carbon source. This strategy provides a very convenient route to alpha-methylated ketones using a variety of ketones without any base or oxidant.
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