N. Arnau et al., PALLADIUM(0)-CATALYZED ALLYLATION OF 4(5)-SUBSTITUTED IMIDAZOLES, 5(6)-SUBSTITUTED BENZIMIDAZOLES, BENZOTRIAZOLE AND 5(6)-METHYLBENZOTRIAZOLE, Journal of heterocyclic chemistry, 32(4), 1995, pp. 1325-1334
Pd(O)-Catalyzed allylations of 4(5)-nitroimidazole, 1, 2-methyl-4(5)-n
itroimidazole, 2, 4(5)-bromoimidazole, 7, 4(5)-methoxyimidazole, 10, 5
(6)-nitrobenzimidazole, 16a, 5(6)-methylbenzimidazole, 16b, benzotriaz
ole, 19, and 5(6)-methylbenzotriazole, 22, were studied under several
reaction conditions. Nitroimidazoles 1 and 2 were regioselectively all
ylated under thermodynamic control, leading to 1-allyl-4-nitro derivat
ives.