A NEW INDIRECT APPLICATION OF AGGREGATIVE ACTIVATION - SYNTHESIS OF ESTERS BY COBALT-CATALYZED CARBONYLATION OF ARYL, HETEROCYCLIC, AND VINYL HALIDES UNDER ATMOSPHERIC-PRESSURE
J. Marchal et al., A NEW INDIRECT APPLICATION OF AGGREGATIVE ACTIVATION - SYNTHESIS OF ESTERS BY COBALT-CATALYZED CARBONYLATION OF ARYL, HETEROCYCLIC, AND VINYL HALIDES UNDER ATMOSPHERIC-PRESSURE, Journal of organic chemistry, 60(26), 1995, pp. 8336-8340
Sun lamp illuminated alkoxycarbonylation of aryl, heteroaryl, and viny
l halides was performed under atmospheric pressure of CO in the presen
ce of a cobalt catalyst in situ generated from Co(OAc)(2). Illuminatio
n through a Pyrex flask was sufficient to catalyze the reaction. This
process avoids the use of Co-2(CO)(8) and excess CH3I, which were requ
ired in the earlier procedure. A S-RN(1) mechanism is proposed.