title: Allylation and crotylation of ketones and aldehydes using potassium organotrifluoroborate salts under Lewis acid and montmorillonite K10 catalyzed conditions.
abstract: Two convenient highly diastereoselective protocols for the allylation and crotylation of ketones using practical, air- and water-stable potassium allyl and crotyltrifluoroborate salts have been developed. BF(3).OEt(2) and montmorillonite clay are used as catalysts to promote additions. The montmorillonite-catalyzed method in particular is very robust, providing a straightforward and scalable method for the allylation and crotylation of a range of ketones and aldehydes.
authors.affiliation: Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
authors.forename: Farhad
authors.initials: F
authors.lastname: Nowrouzi
authors.forename: Avinash N
authors.initials: AN
authors.lastname: Thadani
authors.forename: Robert A
authors.initials: RA
authors.lastname: Batey