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C−C Coupling between an η 3 ‐Allyl Ligand and Carbon Nucleophiles in Molybdenum and Tungsten Complexes: Structural Characterization of the Key Intermediate
Author(s) -
Pérez Julio,
Riera Víctor,
Rodríguez Amor,
GarcíaGranda Santiago
Publication year - 2002
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 - 10.1002/1521-3773(20020415)41:8<1427::aid-anie1427>3.0.co;2-v
Subject(s) - chemistry , nucleophile , acetylide , isomerization , molybdenum , carbanion , ligand (biochemistry) , tungsten , medicinal chemistry , alkyl , nucleophilic addition , photochemistry , organic chemistry , catalysis , biochemistry , receptor
A cis ‐to‐ trans isomerization of the initially formed product is a key step following the nucleophilic attack of acetylide, alkyl, and enolate carbanions at the metal center of [MCl( η 3 ‐C 3 H 5 )(CO) 2 (dmpm)] complexes (M=Mo, W; dmpm=bis(dimethylphosphanyl)methane (P $\rm{\frown}$ P); see scheme). Subsequent metal‐to‐allyl migration followed by elimination yields the corresponding coupling products.