Diastereoselective cycloalkylation of phosphoryl and thiophosphoryl acetonitriles by α,ψ-dihalogenalkanes under phase transfer catalysis conditions
Abstract
Cycloalkylation of phosphoryl and thiophosphoryl acetonitriles 2 by α,ψ-dihalogenalkanes was found to proceed diastereoselectively under phase transfer catalytic conditions yielding 1-(phosphoryl)-2-methyl-cycloalkane carbonitriles as trans-isomers with identical configuration of asymmetric cyclic carbon atoms (RC* RC*). In the case of additional asymmetric phosphorus atom in the starting substrate, trans-isomers are formed as a mixture of diastereomers differing in the configuration of the phosphorus atom (SP* RC* RC* and RP* RC* RC*). © 2006 Wiley Periodicals, Inc. Heteroatom Chem 17:13–21, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.20186