Systematic survey of positive chlorine sources in the asymmetric Appel reaction: oxalyl chloride as a new phosphine activator
作者:Kamalraj V. Rajendran、Lorna Kennedy、Cormac T. O’Connor、Enda Bergin、Declan G. Gilheany
DOI:10.1016/j.tetlet.2013.10.044
日期:2013.12
has been screened to improve the selection process in the asymmetric Appel reaction. Of the activators screened, hexachloroacetone (HCA) gave the highest selectivity with excellent yield, but at least one of its by-products, pentachloroacetone (PCA), can become involved in the selection process. In addressing this, a new reaction of phosphines with oxalyl chloride was discovered that can also generate