[C:1]1([CH2:7][CH2:8][C:9]([C:11]2[N:18]3[C:14]([S:15][CH:16]=[C:17]3[CH3:19])=[N:13][CH:12]=2)=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[BH4-].[Na+]>C(O)C>[CH3:19][C:17]1[N:18]2[C:11]([CH:9]([CH2:8][CH2:7][C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)[OH:10])=[CH:12][N:13]=[C:14]2[S:15][CH:16]=1A solution of (2-Phenylethyl)-3-methylimidazo[2,1-b]thiazol-5-yl methanone (Formula B-6) (0.40 g) in ethanol (5.0 mL) was treated with a solution of NaBH4 (0.05 g) in ethanol (5 mL) and reacted for 18 hours. The solvent was removed in vacuo and the residue was treated with 5% acetic acid solution. Precipitated 3-Methyl-α-(2-phenylethyl)imidazo[2,1-b]thiazole-5-methanol (Formula B-8) (0.38 g) was filtered and recrystallized from isopropanol solution to provide pure 3-Methyl-α-(2-phenylethyl)imidazo[2,1-b]thiazole-5-methanol (Formula B-8) (0.35 g), m.p. 144-145°.
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