Premium
A Dramatic Difference in the Reactivities of Alkoxido‐ and Aryloxidorhenium Complexes in Insertion Reactions
Author(s) -
Simpson Robert D.,
Bergman Robert G.
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199202201
Subject(s) - electrophile , phosphine , ligand (biochemistry) , chemistry , catalysis , atom (system on chip) , medicinal chemistry , stereochemistry , organic chemistry , computer science , biochemistry , receptor , embedded system
Extremely fast and at low temperatures , alkoxido complex 1 reacts with CS 2 to the corresponding Re–O insertion product by direct attack of the electrophile on the O atom of the alkoxido ligand. In contrast, the reaction of aryloxido complex 2 with CS 2 requires higher temperatures (100 °C) and seven days' reaction time; here the loss of a phosphine ligand probably constitutes the first step. The importance of such studies in the design of catalyst systems is obvious.