[N:1]1([C:7]([C:9]2[CH:21]=[CH:20][C:12]([C:13]([O:15]C(C)(C)C)=[O:14])=[CH:11][N:10]=2)=[O:8])[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.Cl>[N+](C)([O-])=O>[N:1]1([C:7]([C:9]2[CH:21]=[CH:20][C:12]([C:13]([OH:15])=[O:14])=[CH:11][N:10]=2)=[O:8])[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1In step c, the t-butyl ester functionality of 16 is hydrolyzed, with for example, HCl in nitromethane, to give the corresponding 6-(morpholine-4-carbonyl)nicotinic acid 17.
読み込み中…