Ethyl chloroformate → HCID 19933000, compound
Reaction equation
C(O)(=O)C(O)=O.[CH2:7]([C:10]1[N:23]([CH2:24][C:25]2[CH:30]=[CH:29][C:28]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=3[C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])=[CH:27][CH:26]=2)[C:13]2[CH:14]([C:18]([O:20][CH2:21][CH3:22])=[O:19])[NH:15][CH2:16][CH2:17][C:12]=2[N:11]=1)[CH2:8][CH3:9].Cl[C:45]([O:47][CH2:48][CH3:49])=[O:46]>>[CH2:7]([C:10]1[N:23]([CH2:24][C:25]2[CH:26]=[CH:27][C:28]([C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=3[C:37]([O:39][C:40]([CH3:41])([CH3:43])[CH3:42])=[O:38])=[CH:29][CH:30]=2)[C:13]2[CH:14]([C:18]([O:20][CH2:21][CH3:22])=[O:19])[N:15]([C:45]([O:47][CH2:48][CH3:49])=[O:46])[CH2:16][CH2:17][C:12]=2[N:11]=1)[CH2:8][CH3:9]Participants
3
Procedure
The compound obtained in Example 62 (1.00 g) is treated in the same manner as in Example 64 with using ethyl chloroformate (0.27 g) instead of acetic anhydride to give ethyl 2-n-propyl-5-ethoxycarbonyl-3-[2'-(t-butoxycarbonyl)biphenyl-4-yl]methyl-4,5,6,7-tetrahydroimidazo[4,5-c]pyridine-4-carboxylate (0.82 g) as a white foam.
Sources & evidence
- ORD record