Brønsted Base Mediated Stereoselective Diphosphination of Terminal Alkynes with Diphosphanes
作者:Yuto Okugawa、Koji Hirano、Masahiro Miura
DOI:10.1021/acs.orglett.7b01209
日期:2017.6.2
A Brønsted base mediated stereoselective diphosphination of terminal alkynes with diphosphanes proceeds to deliver the corresponding (E)-1,2-diphosphinoethenes in good yields. The reaction of aromatic alkynes occurs efficiently in the presence of a catalytic amount of LiO-t-Bu while MN(TMS)2 (M = Li or Na) gave better results in the case of aliphatic substrates. The Brønsted base mediated protocol
development of new synthetic methods by using air‐stable sources of phosphorus. In this respect, a synthetic method that is based on a reductive rearrangement and is capable of converting air‐stable pentavalent phosphorus compounds into reactive trivalent phosphorus compounds is a powerful tool. Tetraphenyldiphosphine disulfide, which is a shelf‐stable solid, was the focus of this study, and it was