Abstract
A novel rhodium(I)-catalyzed hydrophosphination of terminal alkynes with diphosphines and hydrosilanes takes place regioselectively in the presence of small amounts of oxygen. After air-oxidation during workups, the corresponding anti-Markovnikov–type vinylic phosphine oxides were obtained in good yields.
Acknowledgments
Dedicated to Professor Naomichi Furukawa on the occasion of his 70th birthday.
This research was supported by a Grant-in-Aid for Scientific Research on Priority Areas (Area 444, No. 19020061) and Scientific Research (B, 19350095), from the Ministry of Education, Culture, Sports, Science and Technology, Japan.