4-(4-Chlorophenyl)-2-hydroxypyridine → tert-Butyl 7-(4-(4-chlorophenyl)-2-oxopyridin-1(2H)-yl)-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate

HRID 1020538Notes

Reaction equation

HRID 1020538 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[C:6]3[CH2:15][N:14]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:13][CH2:12][C:7]=3[N:8]([CH3:11])[C:9]=2[CH:10]=1.[Cl:23][C:24]1[CH:29]=[CH:28][C:27]([C:30]2[CH:35]=[CH:34][NH:33][C:32](=[O:36])[CH:31]=2)=[CH:26][CH:25]=1>>[Cl:23][C:24]1[CH:25]=[CH:26][C:27]([C:30]2[CH:35]=[CH:34][N:33]([C:2]3[CH:3]=[CH:4][C:5]4[C:6]5[CH2:15][N:14]([C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:13][CH2:12][C:7]=5[N:8]([CH3:11])[C:9]=4[CH:10]=3)[C:32](=[O:36])[CH:31]=2)=[CH:28][CH:29]=1

Participants

3

Reactant 2

HCID 189872944-(4-Chlorophenyl)-2-hydroxypyridineHCID 57950375tert-Butyl 7-bromo-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate

Product 1

HCID 57950395tert-Butyl 7-(4-(4-chlorophenyl)-2-oxopyridin-1(2H)-yl)-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylateYield 28.8%

Procedure

The compound was prepared from tert-Butyl 7-bromo-5-methyl-3,4-dihydro-1H-pyrido[4,3-b]indole-2(5H)-carboxylate (250 mg, 0.685 mmol) and 4-(4-chlorophenyl)pyridine-2(1H)-one (100 mg, 0.418 mmol) according to the procedure in Example 1 (step c). Purification by flash column chromatography (silica gel, hexanes/EtOAc, 100:0 to 80:20 to 50:50 to 25:75 then 0:100) provided the title compound (59 mg, 18%) as a solid, that contained an impurity: ESI MS m/z 490 [M+H]+.

Workup

  1. customPurification by flash column chromatography (silica gel, hexanes/EtOAc, 100:0 to 80:20 to 50:50 to 25:75

Sources & evidence

ORD record
ord-d1baf4ca3ecd4f6cb3405d39e629f7d0
Source dataset
uspto-grants-2014_05
Patent number
US08716308B2

Reaction notes

Loading…