4-Chloro-3-(pyridin-2-yl)aniline → HCID 58614842, compound

HRID 922990Notes

Reaction equation

HRID 922990 reaction equation
[Cl:1][C:2]1[CH:8]=[CH:7][C:5]([NH2:6])=[CH:4][C:3]=1[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][N:10]=1.[CH3:15][C:16]1[CH:24]=[C:23]([CH2:25][S:26]([CH3:29])(=[O:28])=[O:27])[CH:22]=[CH:21][C:17]=1[C:18](O)=[O:19]>>[Cl:1][C:2]1[CH:8]=[CH:7][C:5]([NH:6][C:18](=[O:19])[C:17]2[CH:21]=[CH:22][C:23]([CH2:25][S:26]([CH3:29])(=[O:28])=[O:27])=[CH:24][C:16]=2[CH3:15])=[CH:4][C:3]=1[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][N:10]=1

Participants

3

Reactant 2

HCID 401519254-Chloro-3-(pyridin-2-yl)anilineHCID 66878711HCID 66878711, compound

Product 1

HCID 58614842HCID 58614842, compound

Procedure

410 mg of dimethyl 2-methylterephthalate was hydrolyzed via Procedure M and purified by ISCO Combi-Flash to afford 4-(methoxycarbonyl)-3-methylbenzoic acid. 255 mg of 4-(methoxycarbonyl)-3-methylbenzoic acid was cooled to 0° C. in 2 mL of THF before a solution of 2.6 mL of 1M BH3-THF complex in THF was added dropwise. The ice bath was subsequently removed and the reaction was stirred at room temperature until reaction stalled out at ˜50% complete by TLC. The reaction was re-cooled to 0° C. and another 2.6 mL of BH3-THF was added dropwise before the ice bath was removed. Upon completion, the reaction was re-cooled to 0° C. and quenched with 3N HCl dropwise. The aqueous layer was extracted 2 times with Ethyl Acetate and the organic layer was then extracted once with bicarbonate solution and brine, dried over Magnesium Sulfate, filtered and concentrated to give methyl 4-(hydroxymethyl)-2-methylbenzoate. 220 mg of methyl 4-(hydroxymethyl)-2-methylbenzoate was cooled to 0° C. in 5 mL of DCM before adding 260 mg of Triphenylphosphine and 395 mg of NBS. The reaction was concentrated and directly purified via ISCO Combi-Flash to give pure methyl 4-(bromomethyl)-2-methylbenzoate. 255 mg of methyl 4-(bromomethyl)-2-methylbenzoate was reacted via Procedure O to give methyl 2-methyl-4-(methylsulfonylmethyl)benzoate. 250 mg of methyl 2-methyl-4-(methylsulfonylmethyl)benzoate was then hydrolyzed upon heating to 45° C. for 1 hour via Procedure M to give 2-methyl-4-(methylsulfonylmethyl)benzoic acid. 202 mg of 4-chloro-3-(pyridin-2-yl)aniline was coupled to 2-methyl-4-(methylsulfonylmethyl)benzoic acid via Procedure G. The crude product was purified by reverse phase HPLC to yield N-(4-chloro-3-(pyridin-2-yl)phenyl)-2-methyl-4-(methylsulfonylmethyl)benzamide. MS (Q1) 415 (M)+.

Workup

  1. customThe crude product was purified by reverse phase HPLC

Sources & evidence

ORD record
ord-c1bc32e1b50b417885c8b08a585e2f98
Source dataset
uspto-grants-2016_03
Patent number
US09278961B2

Reaction notes

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