Triethylamine → 2-Benzyl-5-(4-cyanophenyl)-7-methyl-3-oxo-8-(3-trifluoromethyl-phenyl)-2,3,5,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrimidine-6-carboxylic acid methyl ester

HRID 2362308Notes

Reaction equation

HRID 2362308 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:10]([C:11]2[CH:16]=[CH:15][C:14]([C:17]#[N:18])=[CH:13][CH:12]=2)[N:9]2[C:19](=[O:29])[N:20]([CH2:22][C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)[N:21]=[C:8]2[NH:7][C:6]=1[CH3:30])=[O:4].[F:31][C:32]([F:43])([F:42])[C:33]1[CH:34]=[C:35](B(O)O)[CH:36]=[CH:37][CH:38]=1.CCN(CC)CC>C(Cl)Cl.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[CH3:1][O:2][C:3]([C:5]1[CH:10]([C:11]2[CH:12]=[CH:13][C:14]([C:17]#[N:18])=[CH:15][CH:16]=2)[N:9]2[C:19](=[O:29])[N:20]([CH2:22][C:23]3[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=3)[N:21]=[C:8]2[N:7]([C:37]2[CH:36]=[CH:35][CH:34]=[C:33]([C:32]([F:43])([F:42])[F:31])[CH:38]=2)[C:6]=1[CH3:30])=[O:4]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 27343883-(Trifluoromethyl)phenylboronic acidHCID 1363595112-Benzyl-5-(4-cyanophenyl)-7-methyl-3-oxo-2,3,5,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrimidine-6-carboxylic acid methyl ester

Product 1

HCID 712934432-Benzyl-5-(4-cyanophenyl)-7-methyl-3-oxo-8-(3-trifluoromethyl-phenyl)-2,3,5,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrimidine-6-carboxylic acid methyl esterYield 15.3%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 6344DichloromethaneSolvent

Procedure

Intermediate 6 (100 mg, 0.24 mmol), 3-trifluoromethylphenylboronic acid (95 mg, 0.5 mmol), Et3N (250 μl, 1.8 mmol), and copper (II) acetate (50 mg, 0.4 mmol) were dissolved in DCM (10 mL), and stirring at RT was continued for 48 hours. The reaction mixture was filtered to remove the solid and the filtrate was concentrated in vacuo. The resulting residue was purified by silica gel chromatography eluting with a gradient of 0-15% MeOH in DCM. Appropriate fractions were combined and concentrated in vacuo and the resulting residue further purified using preparative HPLC system 2 to yield the title compound as a white solid (20 mg).

Workup

  1. filtrationThe reaction mixture was filtered
  2. customto remove the solid
  3. concentrationthe filtrate was concentrated in vacuo
  4. customThe resulting residue was purified by silica gel chromatography
  5. washeluting with a gradient of 0-15% MeOH in DCM
  6. concentrationconcentrated in vacuo
  7. customthe resulting residue further purified

Sources & evidence

ORD record
ord-42eeb946aaf04c5786e2f8feeacef93a
Source dataset
uspto-grants-2014_04
Patent number
US08691826B2

Reaction notes

Loading…