Angewandte Chemie - International Edition in English p. 2359 - 2361 (1996)
Update date:2022-08-03
Topics:
Louie
Hartwig
Pd(II)/Pd(IV) or Pd(II)/Pd0? The unusual Pd(II) catalyst 1 was reduced to a Pd0 complex by reaction with an amine and a base. β-Hydrogen elimination and subsequent C-H bond-forming reductive elimination generate a coordinate tris(o-tolyl) phosphane. The same palladium(II) metallacycle was reduced to Pd0 in a cross-coupling reaction by C-C bond-forming reductive elimination to form coordinated P(oTol)2-(C6H4CH2Ar). Thus, these compounds can react by a Pd(II)/Pd0-containing catalytic cycle.
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(1996)