Catalytic platinum-initiated cation-olefin reactions with alkene terminating groups
作者:Joseph G. Sokol、Nikki A. Cochrane、Jennifer J. Becker、Michel R. Gagné
DOI:10.1039/c3cc41699b
日期:——
A series of phosphine–Pt2+-catalysts is reported, which enable the oxidative cascade cyclization of poly-alkene substrates. When the terminus is appropriately arranged and a catalyst reoxidation mediator is included, several polycyclic all carbon skeletons can be obtained. In one example, a chiral P2Pt+2 catalyst provides up to 79% ee.
Terminating Platinum-Initiated Cation-Olefin Reactions with Simple Alkenes
作者:Joseph G. Sokol、Chandra Sekhar Korapala、Peter S. White、Jennifer J. Becker、Michel R. Gagné
DOI:10.1002/anie.201100463
日期:2011.6.14
All for one: Phosphine‐ligated platinum(II) electrophiles can activate polyalkenes for cyclase enzyme mimicking cascade cyclizations without the need for special terminating groups (see scheme). Like the cyclase enzymes, terminal alkenes that generate tertiary cations are good substrates, although the details of the cation termination depend on the alkene arrangement.