Titanium-Mediated Carboxylation of Alkynes With Carbon Dioxide
作者:Yvan Six
DOI:10.1002/ejoc.200390170
日期:2003.3
The regioselective carboxylation of nonactivated internal alkynes can be performed with carbondioxide under atmospheric pressure using a simple procedure based on the chemistry of Sato-type diisopropyloxytitanacyclopropenes. Various polysubstituted vinylcarboxylic acids and butenolides can be prepared in this way. In addition, this paper describes an experimental protocol for the preparation of solutions
The reaction of dialkoxytitanacyclopropanes and dialkoxytitanacyclopropenes with carbon dioxide
作者:Yvan Six
DOI:10.1039/b201527g
日期:2002.4.26
Dialkoxytitanacyclopropanes and dialkoxytitanacyclopropenes react with one molecule of carbon dioxide to afford diversely substituted carboxylic acids after hydrolysis.