Water → Methyl 2-cyclopropyl-5-methyl-7-[(2,3,6-trifluorobenzyl)oxy]pyrazolo[1,5-a]pyridine-3-carboxylate

HRID 1486319Notes

Reaction equation

HRID 1486319 reaction equation
CC1C=C(C)C=C(C)C=1S([O-])(=O)=O.[NH2:14][N+:15]1[CH:20]=[CH:19][C:18]([CH3:21])=[CH:17][C:16]=1[O:22][CH2:23][C:24]1[C:29]([F:30])=[CH:28][CH:27]=[C:26]([F:31])[C:25]=1[F:32].[CH:33]1([C:36]#[C:37][C:38]([O:40][CH3:41])=[O:39])[CH2:35][CH2:34]1.C(=O)([O-])[O-].[K+].[K+].O>CN(C=O)C>[CH:33]1([C:36]2[C:37]([C:38]([O:40][CH3:41])=[O:39])=[C:20]3[CH:19]=[C:18]([CH3:21])[CH:17]=[C:16]([O:22][CH2:23][C:24]4[C:29]([F:30])=[CH:28][CH:27]=[C:26]([F:31])[C:25]=4[F:32])[N:15]3[N:14]=2)[CH2:35][CH2:34]1

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 701378methyl 3-cyclopropylpropynoateHCID 1178586661-Amino-4-methyl-2-[(2,3,6-trifluorobenzyl)oxy]pyridinium 2,4,6-trimethylbenzenesulphonate

Product 1

HCID 117859803Methyl 2-cyclopropyl-5-methyl-7-[(2,3,6-trifluorobenzyl)oxy]pyrazolo[1,5-a]pyridine-3-carboxylateYield 39.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

1.45 g (3.00 mmol, purity 98%) of 1-amino-4-methyl-2-[(2,3,6-trifluorobenzyl)oxy]pyridinium 2,4,6-trimethylbenzenesulphonate from Example 155A were dissolved in 9.7 ml of DMF and admixed with 670 mg (5.40 mmol) of methyl 3-cyclopropylprop-2-ynoate. 747 mg (5.40 mmol) of potassium carbonate was added and the mixture was stirred at RT for 3 h. Subsequently, the mixture was poured onto 73 ml of water and stirred briefly, and the precipitated solids were filtered off, washed with water and dried. 462 mg of the title compound were obtained (33% of theory; 85% purity).

Workup

  1. stirringstirred briefly
  2. filtrationthe precipitated solids were filtered off
  3. washwashed with water
  4. customdried

Sources & evidence

ORD record
ord-db15260b6b0c4ddaa048da130a31599c
Source dataset
uspto-grants-2016_08
Patent number
US09422285B2

Reaction notes

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