Reactions of primary and secondary phosphines with aldehydes and ketones
作者:M. Epstein、S.A. Buckler
DOI:10.1016/0040-4020(62)80004-0
日期:1962.1
The reactions of primary and secondary phosphines with aldehydes and ketones have been studied with particular emphasis on the effects of substituents on phosphorus, and reaction conditions. Oxygen transfer reactions are observed with both primary and secondary phosphines thus providing a new route to secondary and tertiary phosphineoxides. The scope of these reactions has been defined in terms of
The Lithiation Reactivity and Selectivity of Differentially Branched Alkyldiphenylphosphine Oxides - A Simple and Versatile Approach to<i>ortho-</i>Functionalized Arylphosphine Oxides
作者:Shraddha G. Mahamulkar、Ivana Císařová、Ullrich Jahn
DOI:10.1002/adsc.201400861
日期:2015.3.9
alkyllithium reagents. Here, the lithiation of differentially branched alkyldiphenylphosphine oxides was investigated and a diverse, but predictable reactivity was found. γ‐Branched derivatives undergo selective directed ortho‐metalation (DoM) using butyllithium and TMEDA as an additive. With decreasing degree of γ‐branching α‐lithiation becomes predominant. The ortho‐phosphinoyllithium intermediates