[NH2:1][CH:2]1[CH2:6][CH2:5][NH:4][C:3]1=[O:7].[F:8][C:9]([F:15])([F:14])[C:10](OC)=[O:11]>CO>[F:8][C:9]([F:15])([F:14])[C:10]([NH:1][CH:2]1[CH2:6][CH2:5][NH:4][C:3]1=[O:7])=[O:11]A suspension of Intermediate 2 (181 g), methyl trifluoroacetate (218 ml) and methanol (2.6 l) was stirred for 2 h. The solvent was then removed in vacuo to afford the title compound as a cream solid (355 g). Mass spec. MNH4+ (found) 214 MNH4+ (calculated) 214
Wird geladen…