Acetic Acid → HCID 178478151, Verbindung

Reaktionsgleichung

[NH2:1][C:2]1[C:10]2[C:5](=[N:6][CH:7]=[N:8][C:9]=2[NH:11][C:12]2[CH:17]=[CH:16][CH:15]=[C:14]([Cl:18])[CH:13]=2)[NH:4][N:3]=1.C(O)(=O)C.[CH:23](=O)[C:24]1[O:28][CH:27]=[CH:26][CH:25]=1>CO>[Cl:18][C:14]1[CH:13]=[C:12]([NH:11][C:9]2[N:8]=[CH:7][N:6]=[C:5]3[NH:4][N:3]=[C:2]([N:1]=[CH:23][C:24]4[O:28][CH:27]=[CH:26][CH:25]=4)[C:10]=23)[CH:17]=[CH:16][CH:15]=1

Komponenten

Versuchsvorschrift

Analogously to Example 32, 261 mg (1.00 mmol) of 3-amino-4-(3-chlorophenylamino)-1H-pyrazolo[3,4-d]pyrimidine (see Step 1.6) and 180 mg of acetic acid are dissolved in 26 ml of methanol and reacted with 144 mg (1.5 mmol) of furfural to form 4-(3-chloro-phenylamino)-3-[(fur-2-yl)-methyleneamino]-1H-pyrazolo[3,4-d]-pyrimidine. Reduction of the above intermediate in 15 ml of DMEU with 8 ml (8 mmol) of DIBAL-H and analogous working-up yield 4-(3-chloro-phenylamino-3-[(fur-2-yl)-methylamino]-1H-pyrazolo[3,4-d]pyrimidine; HPLC: tRet(grad20-100) 8.4; MS (M)+=340.