Pure Appl. Chem., 2008, Vol. 80, No. 5, pp. 1127-1134
http://dx.doi.org/10.1351/pac200880051127
Rhodium- and iridium-catalyzed oxidative coupling of benzoic acids with alkynes and alkenes
Abstract:
The oxidative coupling of benzoic acids with alkynes and alkenes effectively proceeds in the presence of a Rh catalyst and an appropriate oxidant to produce the corresponding isocoumarin and phthalide derivatives, respectively. Interestingly, by using an Ir catalyst in place of Rh, the acids and alkynes undergo 1:2 coupling accompanied by decarboxylation to afford naphthalene derivatives exclusively.
Keywords
C-C coupling; C-H bond cleavage; iridium; isocoumarin; naphthalene; oxidative coupling; phthalide; rhodium.