Triethyl methanetricarboxylate → 1-(2-Chloro-benzyl)-4-hydroxy-2-oxo-1,2-dihydro-pyrrolo[1,2-b]pyridazine-3-carboxylic acid ethyl ester
Reaction equation
C(O[C:6](=[O:21])[N:7]([CH2:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[Cl:20])[N:8]1[CH:12]=[CH:11][CH:10]=[CH:9]1)(C)(C)C.[CH2:22]([O:24][C:25](=[O:37])[CH:26](C(OCC)=O)[C:27](OCC)=[O:28])[CH3:23]>>[CH2:22]([O:24][C:25]([C:26]1[C:6](=[O:21])[N:7]([CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=2[Cl:20])[N:8]2[CH:9]=[CH:10][CH:11]=[C:12]2[C:27]=1[OH:28])=[O:37])[CH3:23]Participants
3
Procedure
Prepared according to the thermal cyclization condition used in Example 1 step c) from (2-chloro-benzyl)-pyrrol-1-yl-carbamic acid tert-butyl ester (1.0 eq.) and 2-ethoxycarbonyl-malonic acid diethyl ester (3.0 eq.). ESI (m/z): 347 (M+H)+.
Workup
- customPrepared