[CH:1]1([C:5]2[N:6]=[C:7]([C:10]([O-:12])=O)[S:8][CH:9]=2)[CH2:4][CH2:3][CH2:2]1.[Li+].C(C1N=C(C([Cl:24])=O)SC=1)(C)C>>[CH:1]1([C:5]2[N:6]=[C:7]([C:10]([Cl:24])=[O:12])[S:8][CH:9]=2)[CH2:4][CH2:3][CH2:2]14-Cyclobutylthiazole-2-carbonyl chloride 267b was synthesized from compound 266b (5 g, 1 eq.), following the procedure as described for compound 214. MS (ESI, EI+): m/z=198 (MH+).
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