Dichloromethane → (rac)-7-(4-Cyanophenyl)-2-(methoxymethyl)-5-methyl-4-[3-(trifluoromethyl)phenyl]-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile

HRID 1046891Notes

Reaction equation

HRID 1046891 reaction equation
[C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH:9]2[N:14]3[N:15]=[C:16]([CH2:18][O:19][CH3:20])[N:17]=[C:13]3[NH:12][C:11]([CH3:21])=[C:10]2[C:22]#[N:23])=[CH:5][CH:4]=1)#[N:2].ClCCl.[F:27][C:28]([F:39])([F:38])[C:29]1[CH:30]=[C:31](B(O)O)[CH:32]=[CH:33][CH:34]=1.C(N(CC)CC)C>C([O-])(=O)C.[Cu+2].C([O-])(=O)C.N1C=CC=CC=1>[C:1]([C:3]1[CH:8]=[CH:7][C:6]([CH:9]2[N:14]3[N:15]=[C:16]([CH2:18][O:19][CH3:20])[N:17]=[C:13]3[N:12]([C:33]3[CH:32]=[CH:31][CH:30]=[C:29]([C:28]([F:39])([F:38])[F:27])[CH:34]=3)[C:11]([CH3:21])=[C:10]2[C:22]#[N:23])=[CH:5][CH:4]=1)#[N:2]

Participants

7

Reactant 4

HCID 6344DichloromethaneHCID 8471TriethylamineHCID 27343883-(Trifluoromethyl)phenylboronic acid2×HCID 136355650(rac)-7-(4-Cyanophenyl)-2-(methoxymethyl)-5-methyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile

Product 1

HCID 66628235(rac)-7-(4-Cyanophenyl)-2-(methoxymethyl)-5-methyl-4-[3-(trifluoromethyl)phenyl]-4,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalyst2×HCID 1049PyridineSolvent2×

Procedure

Under an atmosphere of argon protective gas, (rac)-7-(4-cyanophenyl)-2-(methoxymethyl)-5-methyl-4,7-dihydro[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile (35 mg, 114 μmol) was stirred in abs. dichloromethane (30 ml) with molecular sieve (0.5 g, 4 Å) for 1 h. 3-(Trifluoromethyl)phenylboronic acid (65 mg, 343 μmol, 3 eq.), anhydrous copper(II) acetate (62.3 mg, 343 μmol, 3 eq.), abs. pyridine (25 μl) and triethylamine (35 mg, 343 μmol, 3 eq.) were then added, and the mixture was stirred at RT for 12 h. More molecular sieve (0.5 g, 4 Å), 3-(trifluoromethyl)phenylboronic acid (22 mg, 114 μmol, 1 eq.), anhydrous copper(II) acetate (21 mg, 114 μmol, 1 eq.) and abs. pyridine (829 μl) were then added, and the mixture was stirred at RT for a further 3 d. The reaction mixture was then filtered through kieselguhr, the filter residue was washed with dichloromethane and pyridine and the filtrate was concentrated to dryness. The residue was purified by preparative HPLC (Gromsil C18 column, 10 μm; mobile phase: acetonitrile/water+0.1% TFA 10:90→90:10). The product was obtained as a colorless solid (4.4 mg, 9% of theory).

Workup

  1. stirringthe mixture was stirred at RT for a further 3 d
  2. filtrationThe reaction mixture was then filtered through kieselguhr
  3. washthe filter residue was washed with dichloromethane and pyridine
  4. concentrationthe filtrate was concentrated to dryness
  5. customThe residue was purified by preparative HPLC (Gromsil C18 column, 10 μm; mobile phase: acetonitrile/water+0.1% TFA 10:90→90:10)
  6. customThe product was obtained as a colorless solid (4.4 mg, 9% of theory)

Sources & evidence

ORD record
ord-b447bd4db3064615a340c88a6cded0ac
Source dataset
uspto-grants-2013_10
Patent number
US08569314B2

Reaction notes

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