Trityl chloride → 3-Methyl-1-trityl-1H-1,2,4-triazole

Participants

Reaction Steps

Trityl chloride (19.0 g) was added portionwise to a stirred solution of 3-methyl-1,2,4-triazole (5.6 g, commercial) and triethylamine (9.5 ml) in dichloromethane (200 ml). The mixture was diluted with dichloromethane (100 ml), washed with water (50 ml), dried over magnesium sulphate and evaporated under reduced pressure to give 1-trityl-3-methyl-1,2,4-triazole (19.0 g). Recrystallisation of a 2 g sample from toluene-hexane (1:1) gave pure material (1.32 g, m.p. 194°-196° C.). NMR (CDCl3): δ2.41(3H,s), 7.03-7.40(15H,m), 7.83(1H,s).

Provenance & Evidence