Acetic Anhydride → N-{(7R)-6-Cyano-7-(4-cyanophenyl)-5-methyl-4-[3-(trifluoromethyl)phenyl]-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-2-yl}acetamide

HRID 1046849Notes

Reaction equation

HRID 1046849 reaction equation
Cl.[NH2:2][C:3]1[N:32]=[C:6]2[N:7]([C:22]3[CH:27]=[CH:26][CH:25]=[C:24]([C:28]([F:31])([F:30])[F:29])[CH:23]=3)[C:8]([CH3:21])=[C:9]([C:19]#[N:20])[C@@H:10]([C:11]3[CH:16]=[CH:15][C:14]([C:17]#[N:18])=[CH:13][CH:12]=3)[N:5]2[N:4]=1.[C:33](OC(=O)C)(=[O:35])[CH3:34]>N1C=CC=CC=1>[C:19]([C:9]1[C@@H:10]([C:11]2[CH:16]=[CH:15][C:14]([C:17]#[N:18])=[CH:13][CH:12]=2)[N:5]2[N:4]=[C:3]([NH:2][C:33](=[O:35])[CH3:34])[N:32]=[C:6]2[N:7]([C:22]2[CH:27]=[CH:26][CH:25]=[C:24]([C:28]([F:29])([F:31])[F:30])[CH:23]=2)[C:8]=1[CH3:21])#[N:20]

Participants

4

Reactant 2

HCID 7918Acetic AnhydrideHCID 66627899(7R)-2-amino-7-(4-cyanophenyl)-5-methyl-4-[3-(trifluoromethyl)phenyl]-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile hydrochloride

Product 1

HCID 66628260N-{(7R)-6-Cyano-7-(4-cyanophenyl)-5-methyl-4-[3-(trifluoromethyl)phenyl]-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidin-2-yl}acetamide

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

Under an atmosphere of argon protective gas, (7R)-2-amino-7-(4-cyanophenyl)-5-methyl-4-[3-(trifluoromethyl)phenyl]-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile hydrochloride (22 mg, 48 mmol) was dissolved in abs. pyridine (5 ml). At room temperature, acetic anhydride (98 mg, 960 μmol, 20 eq.) was added. Once analysis of the reaction by TLC showed substantial conversion (a few hours), the reaction mixture was concentrated under reduced pressure and directly purified by preparative HPLC (Reprosil C18 column, 30×200 mm; mobile phase: acetonitrile-water-0.1% TFA). After lyophilization, the product was obtained as a solid (20.6 mg, 93% of theory).

Workup

  1. customOnce analysis of the reaction by TLC
  2. customconversion (a few hours)
  3. concentrationthe reaction mixture was concentrated under reduced pressure
  4. customdirectly purified by preparative HPLC (Reprosil C18 column, 30×200 mm; mobile phase: acetonitrile-water-0.1% TFA)
  5. customAfter lyophilization, the product was obtained as a solid (20.6 mg, 93% of theory)

Sources & evidence

ORD record
ord-b25360ab24bd4314a8fca725979fb4ed
Source dataset
uspto-grants-2013_10
Patent number
US08569314B2

Reaction notes

Loading…