Acetic Acid → HCID 21558497, compound

Reaction equation

[CH3:1][N:2]1[CH2:7][CH2:6][C:5](=O)[CH2:4][CH2:3]1.C(O)(=O)C.[NH2:13][C:14]1[CH:19]=[C:18]([O:20][CH3:21])[CH:17]=[CH:16][C:15]=1[N:22]1[CH:26]=[CH:25][CH:24]=[CH:23]1>C(O)C>[CH3:21][O:20][C:18]1[CH:19]=[C:14]2[C:15](=[CH:16][CH:17]=1)[N:22]1[CH:26]=[CH:25][CH:24]=[C:23]1[C:5]1([CH2:6][CH2:7][N:2]([CH3:1])[CH2:3][CH2:4]1)[NH:13]2

Participants

Procedure

3.48 g (0.03 mole) of 1-methyl-4-piperidone and 3 ml. of glacial acetic acid are added to a solution of 5.65 g (0.03 mole) of 1-(2-amino-4-methoxy-phenyl) pyrrole in 100 ml. of absolute ethanol. The solution is refluxed for 15 hours and concentrated, and the residue is dissolved in water. The solution is filtered and basified. A solid precipitates and is filtered, dried and recrystallized from ethanol to give 4,5-dihydro-7-methoxy-1'-methylspiro[pyrrolo(1,2-a)quinoxaline-4,4'-piperidine], m.p. 124°-125° C.