Benzenesulfonyl chloride → {4-[(1-Benzenesulfonyl-1H-benzoimidazol-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester

HRID 250994Notes

Reaction equation

HRID 250994 reaction equation
[C:1]([O:5][C:6](=[O:31])[NH:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]([CH2:21][C:22]1[NH:26][C:25]2[CH:27]=[CH:28][CH:29]=[CH:30][C:24]=2[N:23]=1)[CH2:13][C:14]1[C:19]([CH3:20])=[CH:18][CH:17]=[CH:16][N:15]=1)([CH3:4])([CH3:3])[CH3:2].CCN(CC)CC.[C:39]1([S:45](Cl)(=[O:47])=[O:46])[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1>C(Cl)Cl>[C:1]([O:5][C:6](=[O:31])[NH:7][CH2:8][CH2:9][CH2:10][CH2:11][N:12]([CH2:21][C:22]1[N:26]([S:45]([C:39]2[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=2)(=[O:47])=[O:46])[C:25]2[CH:27]=[CH:28][CH:29]=[CH:30][C:24]=2[N:23]=1)[CH2:13][C:14]1[C:19]([CH3:20])=[CH:18][CH:17]=[CH:16][N:15]=1)([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 7369Benzenesulfonyl chlorideHCID 8471TriethylamineHCID 67271501{4-[(1H-benzoimidazol-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester

Product 1

HCID 67272219{4-[(1-Benzenesulfonyl-1H-benzoimidazol-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl esterYield 70.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of {4-[(1H-benzoimidazol-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester (0.215 g, 0.51 mmol) in CH2Cl2 (10 mL) was added Et3N (0.30 mL, 2.15 mmol) followed by benzenesulfonyl chloride (0.—ml, 1.02 mmol) and the resultant solution was stirred at room temperature overnight. The mixture was diluted with CH2Cl2 (40 mL), washed with brine (3×10 mL), dried (Na2SO4), and concentrated. Purification of the crude material by column chromatography on silica gel (15:1 CH2Cl2-MeOH) provided 0.202 g (70%) of {4-[(1-Benzenesulfonyl-1H-benzoimidazol-2-ylmethyl)-(3-methyl-pyridin-2-ylmethyl)-amino]-butyl}-carbamic acid tert-butyl ester as an orange-brown oil.

Workup

  1. washwashed with brine (3×10 mL)
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated
  4. customPurification of the crude material by column chromatography on silica gel (15:1 CH2Cl2-MeOH)

Sources & evidence

ORD record
ord-0273d9f4f67e49a89d10c34172dc79bb
Source dataset
uspto-grants-2011_01
Patent number
US07863293B2

Reaction notes

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