Cl[C:2]1[C:3]2[C:10]([C:11]3[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=3)=[CH:9][S:8][C:4]=2[N:5]=[CH:6][N:7]=1.C(N(CC)CC)C.[NH:24]1[CH2:29][CH2:28][CH:27]([CH2:30][OH:31])[CH2:26][CH2:25]1>C(O)C>[C:11]1([C:10]2[C:3]3[C:2]([C:27]4([CH2:30][OH:31])[CH2:28][CH2:29][NH:24][CH2:25][CH2:26]4)=[N:7][CH:6]=[N:5][C:4]=3[S:8][CH:9]=2)[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=14-Chloro-5-phenyl-thieno[2,3-d]pyrimidine (1 g, 4.05 mmol) was dissolved in ethanol (15 ml) to give a yellow solution. To this was added triethylamine (1.7 ml, 12.2 mmol) and 4-piperidinemethanol (0.58 g, 5 mmol). The reaction mixture was heated to 50° C. and stirred for 1.5 hours until no 4-chloro-5-phenyl-thieno[2,3-d]pyrimidine was present by TLC. The reaction mixture was allowed to cool to room temperature before being poured over ice water (50:50 mix). The resultant precipitate was collected by filtration to give the product as a pale yellow solid (1.23 g, yield 90%). LCMS: RT=4.05 min, M+1=326.
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