Bromopinacolone → 4-[5-(2,2-Dimethyl-propionyl)-thiazol-2-yl]-piperazine-1-carboxylic acid tert-butyl ester
Reaktionsgleichung
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([C:14](=[S:20])[N:15]=[CH:16]N(C)C)[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].Br[CH2:22][C:23](=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25]>>[C:1]([O:5][C:6]([N:8]1[CH2:9][CH2:10][N:11]([C:14]2[S:20][C:22]([C:23](=[O:28])[C:24]([CH3:27])([CH3:26])[CH3:25])=[CH:16][N:15]=2)[CH2:12][CH2:13]1)=[O:7])([CH3:2])([CH3:3])[CH3:4]Komponenten
3
Versuchsvorschrift
Prepared in analogy to example 82 (b) from 4-(dimethylaminomethylene-thiocarbamoyl)-piperazine-1-carboxylic acid tert-butyl ester (Example 82(a)) and 1-bromo-pinacolone. The crude material was purified by chromatography (SiO2, ethyl acetate/heptane) to afford the title compound as a white crystalline solid (yield 87%). MS (m/e): 354.3 (M+H+, 100%).