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The Mechanism of 1,4‐ and 1,6‐Cuprate Additions: The First Determination of Activation Parameters
Author(s) -
Canisius Johannes,
Gerold Andreas,
Krause Norbert
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990601)38:11<1644::aid-anie1644>3.0.co;2-a
Subject(s) - cuprate , arrhenius plot , arrhenius equation , activation energy , substrate (aquarium) , kinetic energy , acceptor , chemistry , mechanism (biology) , copper , photochemistry , materials science , condensed matter physics , physics , doping , organic chemistry , optoelectronics , quantum mechanics , geology , oceanography
With a direct kinetic study , activation parameters for the 1,4‐cuprate addition to enones (see the Arrhenius plot,▴) and the 1,6‐addition to acceptor‐substituted enynes (█) were determined for the first time. Both reactions might involve σ copper( III ) species which are formed by oxidative addition of the respective substrate to the cuprate.