2,6-Bis(trifluoromethyl)pyridine-4-carboxylic acid → N-(2-Methanesulfonyl-ethyl)-N-(4-o-tolyl-pyridin-3-yl)-2,6-bis-trifluoromethyl-isonicotinamide

HRID 878182Notes

Reaction equation

HRID 878182 reaction equation
[CH3:1][S:2]([CH2:5][CH2:6][NH:7][C:8]1[CH:9]=[N:10][CH:11]=[CH:12][C:13]=1[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[CH3:20])(=[O:4])=[O:3].[F:21][C:22]([F:37])([F:36])[C:23]1[CH:24]=[C:25]([CH:29]=[C:30]([C:32]([F:35])([F:34])[F:33])[N:31]=1)[C:26](O)=[O:27]>>[CH3:1][S:2]([CH2:5][CH2:6][N:7]([C:8]1[CH:9]=[N:10][CH:11]=[CH:12][C:13]=1[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[CH3:20])[C:26](=[O:27])[C:25]1[CH:29]=[C:30]([C:32]([F:33])([F:34])[F:35])[N:31]=[C:23]([C:22]([F:37])([F:21])[F:36])[CH:24]=1)(=[O:4])=[O:3]

Participants

3

Reactant 2

HCID 306891352,6-Bis(trifluoromethyl)pyridine-4-carboxylic acidHCID 70663340(2-Methanesulfonyl-ethyl)-(4-o-tolyl-pyridin-3-yl)-amine

Product 1

HCID 86670776N-(2-Methanesulfonyl-ethyl)-N-(4-o-tolyl-pyridin-3-yl)-2,6-bis-trifluoromethyl-isonicotinamideYield 10%

Procedure

The title compound was prepared in analogy to example 90, from (2-methanesulfonyl-ethyl)-(4-o-tolyl-pyridin-3-yl)-amine and 2,6-bis(trifluoromethyl)isonicotinic acid (Key Organics Ltd.) after a reaction time of 17 hours. The compound was purified by silica gel chromatography on a 10 g column using a MPLC system eluting with a gradient of n-heptane:EtOAc (100:0 to 0:100). A second chromatography (preparative HPLC (phenomenex gemini column), gradient of acetonitrile:water (containing 0.05% formic acid) (10:90 to 98:2)) yielded the desired product as an off-white solid (10%). MS (ESI): m/z=532.11 [M+H]+.

Workup

  1. customThe compound was purified by silica gel chromatography on a 10 g column
  2. washeluting with a gradient of n-heptane:EtOAc (100:0 to 0:100)

Sources & evidence

ORD record
ord-43a0ddffbc024bcebd37a3e691cd7d7b
Source dataset
uspto-grants-2015_03
Patent number
US08987307B2

Reaction notes

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