Potassium Carbonate → phenyl 1-p-Tolyl-3-(trifluoromethyl)-1H-pyrazol-5-ylcarbamate

HRID 871544Notes

Reaction equation

HRID 871544 reaction equation
[C:1]1([CH3:17])[CH:6]=[CH:5][C:4]([N:7]2[C:11]([NH2:12])=[CH:10][C:9]([C:13]([F:16])([F:15])[F:14])=[N:8]2)=[CH:3][CH:2]=1.C([O-])([O-])=O.[K+].[K+].Cl[C:25]([O:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)=[O:26]>C1COCC1>[C:1]1([CH3:17])[CH:2]=[CH:3][C:4]([N:7]2[C:11]([NH:12][C:25](=[O:26])[O:27][C:28]3[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=3)=[CH:10][C:9]([C:13]([F:15])([F:16])[F:14])=[N:8]2)=[CH:5][CH:6]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 15891Phenyl chloroformateHCID 50896499HCID 50896499, compound

Product 1

HCID 58267955phenyl 1-p-Tolyl-3-(trifluoromethyl)-1H-pyrazol-5-ylcarbamateYield 104.5%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

According to the procedure described in Example 161C, to a solution of 1-p-tolyl-3-(trifluoromethyl)-1H-pyrazol-5-amine (2.237 g, 9.57 mmol) in THF (25 mL) and K2CO3 (2.48 g, 18.5 mmol) was added phenyl chloroformate (1.887 g, 12.1 mmol). The crude product was purified by silica gel chromatography with 5-20% EtOAc/hexane as eluants to afford phenyl 1-p-Tolyl-3-(trifluoromethyl)-1H-pyrazol-5-ylcarbamate as solid (3.614 g, 94%). 1H NMR (300 MHz, CDCl3) δ 7.40 (m, 6H), 7.26 (m, 2H), 7.24 (m, 2H), 6.86 (s, 1H), 2.46 (s, 3H); LC-MS (ESI) m/z 362 (M+H)+.

Workup

  1. customThe crude product was purified by silica gel chromatography with 5-20% EtOAc/hexane as eluants

Sources & evidence

ORD record
ord-ff127257180a416ea84a4cc8d15d6bb2
Source dataset
uspto-grants-2015_03
Patent number
US08969587B2

Reaction notes

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