Oxalyl chloride → 3-(2-Fluoro-4-methylsulfanyl-phenylamino)-thieno[3,2-c]pyridine-2-carboxylic acid (2-vinyloxy-ethoxy)-amide

HRID 1366797Notes

Reaction equation

[F:1][C:2]1[CH:7]=[C:6]([S:8][CH3:9])[CH:5]=[CH:4][C:3]=1[NH:10][C:11]1[C:15]2[CH:16]=[N:17][CH:18]=[CH:19][C:14]=2[S:13][C:12]=1[C:20](O)=[O:21].C(Cl)(=O)C(Cl)=O.[CH:29]([O:31][CH2:32][CH2:33][O:34][NH2:35])=[CH2:30].CCN(C(C)C)C(C)C>ClCCl.CN(C=O)C>[CH:29]([O:31][CH2:32][CH2:33][O:34][NH:35][C:20]([C:12]1[S:13][C:14]2[CH:19]=[CH:18][N:17]=[CH:16][C:15]=2[C:11]=1[NH:10][C:3]1[CH:4]=[CH:5][C:6]([S:8][CH3:9])=[CH:7][C:2]=1[F:1])=[O:21])=[CH2:30]

Participants

Conditions

Temperature: 0 °C

Procedure

A suspension of 3-(2-fluoro-4-methylsulfanyl-phenylamino)-thieno[3,2-c]pyridine-2-carboxylic acid (0.107 g, 0.32 mmol) in dry dichloromethane (5 ml) under an atmosphere of nitrogen was cooled to 0° C. and treated with DMF (1 drop) and oxalyl chloride (0.081 ml, 0.96 mmol). The reaction mixture was stirred for 1 hour then the solvent removed in vacuo. The resultant residue was re-suspended in dry dichloromethane (1 ml) and treated dropwise with a solution of O-(2-vinyloxy-ethyl) -hydroxylamine (0.066 g, 0.64 mmol) and DIPEA (0.167 ml, 0.96 mmol) in dry dichloromethane (4 ml) before being stirred for 18 hours. The reaction mixture was washed (water, brine), dried (MgSO4), filtered and concentrated in vacuo. The resultant residue was subjected to flash chromatography (Si-SPE, gradient 0-30% ethyl acetate in dichloromethane) to provide the title compound as a yellow solid (0.024 g, 18%). LCMS (method B): RT=3.17 min, M+H+ 420.

Workup

customthe solvent removed in vacuo
stirringbefore being stirred for 18 hours
washThe reaction mixture was washed (water, brine)
dry with materialdried (MgSO4)
filtrationfiltered
concentrationconcentrated in vacuo

Sources & evidence

ORD record: ord-25a59f44cc0a45b19b79d5c6d7cc2410
Source dataset: uspto-grants-2011_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07893085B2

Reaction notes

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