2-Cyano-4'-methylbiphenyl → 5-(4'-Methyl-1,1'-biphenyl-2-yl)-1H-tetrazole

Participants

Reaction Conditions

Reaction Steps

A mixture of 1.50 g of 2-(4-methylphenyl)benzonitrile, 19.5 g of tridodecyltin azide (tri-n-dodecyltin azide) and 7 ml of toluene was stirred for 37.5 hours at 120° C. The reaction mixture was, after cooling, concentrated, and there were added 18 ml of ethanol, 1 ml of methylene chloride and 2.4 g of sodium nitrite dissolved in 9 ml of water, whose pH was adjusted at 3.4 with conc. hydrochloric acid. To the mixture were added 2 ml of ethyl acetate and 100 ml of hexane. Insolubles were filtered off. The filtrate was shaken, then left standing to form two layers. The organic layer was subjected to extraction with 1N NaOH. The alkaline layer was adjusted at pH 3 with conc. hydrochloric acid, and then subjected to extraction with ethyl acetate. The extract was concentrated, and there were added ethyl acetate and hexane to cause crystallization. The crystals were collected by filtration, washed with hexane and dried to afford 1.51 g (yield 82.3%) of 5-[2-(4'-methylbiphenyl)]tetrazole. Spectrum data were in good agreement with those in Example 4.

Provenance & Evidence