Y. Tanabe et al., Powerful stereoselective aldol-type additions of phenyl and phenylthio esters with aldehydes or ketones mediated by TiCl4/amine reagent, SYNLETT, (12), 2001, pp. 1959-1961
An efficient TiCl4/amine-promoted aldol-type addition of phenyl and phenylt
hio esters with aldehydes or ketones has been performed. The present method
includes a practical merit from the green chemical viewpoint with regard t
o yields, variations of substrates, availability of reagents, and simple op
erations.