Ammonia → 4-(2-methyl-1H-benzimidazol-1-yl)benzonitrile

Cuprous cyanide (8.323 g, 93 mmol) was added to a mixture of 1-(4-iodophenyl)-2-methylbenzimidazole (5.184 g, 15.5 mmol) and palladium (II) acetate (170 mg) in N,N'-dimethyl-1,4,5,6-tetrahydro-2-pyrimidone (15 ml) and the resulting solution was heated under nitrogen at 100° C. for 15 hours. The mixture was cooled, poured into saturated aqueous ammonia (150 ml) and shaken to dissolve the copper salts. The mixture was extracted with ether (3×150 ml), and the combined extracts were washed consecutively with water (3×150 ml), brine (150 ml), and then dried (MgSO4) and concentrated under reduced pressure to give 1-(4-cyanophenyl)-2-methylbenzimidazole, 941 mg, as a white solid.

1. temperatureThe mixture was cooled
2. extractionThe mixture was extracted with ether (3×150 ml)
3. washthe combined extracts were washed consecutively with water (3×150 ml), brine (150 ml)
4. dry with materialdried (MgSO4)
5. concentrationconcentrated under reduced pressure

ORDレコード

ord-79ee514ca39c40bbbe84659c7bc7c561

出典データセット

uspto-grants-1992_06

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US05120747