Trifluoroacetic acid → 5-bromo-8-chloro-2-[(4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl]-7-(1,4-dimethyl-1H-1,2,3-triazol-5-yl)-3,4-dihydroisoquinolin-1(2H)-one

HRID 577605Notes

Reaction equation

HRID 577605 reaction equation
C([O:8][C:9]1[C:14]([CH2:15][N:16]2[CH2:25][CH2:24][C:23]3[C:18](=[C:19]([Cl:34])[C:20]([C:27]4[N:31]([CH3:32])[N:30]=[N:29][C:28]=4[CH3:33])=[CH:21][C:22]=3[Br:26])[C:17]2=[O:35])=[C:13]([CH3:36])[CH:12]=[C:11]([CH3:37])[N:10]=1)C1C=CC=CC=1.FC(F)(F)C(O)=O>ClCCl>[Br:26][C:22]1[CH:21]=[C:20]([C:27]2[N:31]([CH3:32])[N:30]=[N:29][C:28]=2[CH3:33])[C:19]([Cl:34])=[C:18]2[C:23]=1[CH2:24][CH2:25][N:16]([CH2:15][C:14]1[C:9](=[O:8])[NH:10][C:11]([CH3:37])=[CH:12][C:13]=1[CH3:36])[C:17]2=[O:35]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 867238312-{[2-(benzyloxy)-4,6-dimethylpyridin-3-yl]methyl}-5-bromo-8-chloro-7-(1,4-dimethyl-1H-1,2,3-triazol-5-yl)-3,4-dihydroisoquinolin-1(2H)-one

Product 1

HCID 867238325-bromo-8-chloro-2-[(4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl]-7-(1,4-dimethyl-1H-1,2,3-triazol-5-yl)-3,4-dihydroisoquinolin-1(2H)-oneYield 90%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 2-{[2-(benzyloxy)-4,6-dimethylpyridin-3-yl]methyl}-5-bromo-8-chloro-7-(1,4-dimethyl-1H-1,2,3-triazol-5-yl)-3,4-dihydroisoquinolin-1(2H)-one (293i, 76 mg, 0.13 mmol) in dichloromethane (4 mL) was cooled in an ice-water bath. Trifluoroacetic acid (6 mL) was added, and the mixture stirred and allowed to warm to room temperature overnight. After removal of the volatiles under vacuum, the residue was purified by silica gel chromatography (eluting with 10:1 dichloromethane/methanol) to give 5-bromo-8-chloro-2-[(4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)methyl]-7-(1,4-dimethyl-1H-1,2,3-triazol-5-yl)-3,4-dihydroisoquinolin-1(2H)-one (Example 293, 56.9 mg, 90% yield) as a white solid). 1H NMR (400 MHZ, Methanol-d4): δ 7.79 (s, 1H), 6.10 (s, 1H), 4.75 (s, 2H), 3.84 (s, 3H), 3.59 (t, J=6.2 Hz, 2H), 3.07 (t, J=6.2 Hz, 2H), 2.30 (s, 3H), 2.24 (s, 3H), 2.16 (s, 3H). MS: 492 [M+1].

Workup

  1. customAfter removal of the volatiles under vacuum
  2. customthe residue was purified by silica gel chromatography (eluting with 10:1 dichloromethane/methanol)

Sources & evidence

ORD record
ord-69068fa76cd444a5b42d9091bfadf77a
Source dataset
uspto-grants-2015_05
Patent number
US09040515B2

Reaction notes

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