1-(2-Fluorobenzyl)-3-iodo-1H-pyrazolo[3,4-d]pyrimidine → 1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-d]pyrimidine-3-carbonitrile
Reaction equation
[F:1][C:2]1[CH:18]=[CH:17][CH:16]=[CH:15][C:3]=1[CH2:4][N:5]1[C:9]2=[N:10][CH:11]=[N:12][CH:13]=[C:8]2[C:7](I)=[N:6]1.[Cu][C:20]#[N:21]>CS(C)=O>[F:1][C:2]1[CH:18]=[CH:17][CH:16]=[CH:15][C:3]=1[CH2:4][N:5]1[C:9]2=[N:10][CH:11]=[N:12][CH:13]=[C:8]2[C:7]([C:20]#[N:21])=[N:6]1Participants
4
Conditions
- Temperature
- 150 °C
Procedure
950 mg (purity 85%, approx. 2.281 mmol) of 1-(2-fluorobenzyl)-3-iodo-1H-pyrazolo[3,4-d]pyrimidine and 225 mg (2.509 mmol) of copper(I) cyanide were initially charged in 6 ml of absolute DMSO and the mixture was heated at 150° C. for 2 h. After cooling, the mixture was filtered through Celite and washed through with ethyl acetate and THF. The organic phase was washed with 25% aqueous ammonia solution, saturated aqueous ammonium chloride solution and saturated aqueous sodium chloride solution, dried over sodium sulphate and concentrated on a rotary evaporator. 685 mg (purity 84%, 99% of theory) of the target compound were obtained.