Acetic Acid → HCID 68278058, compound

HRID 1526875Notes

Reaction equation

HRID 1526875 reaction equation
[CH3:1][C:2]1[O:6][C:5]([C:7]2[CH:22]=[CH:21][C:10]([C:11]([NH:13][CH2:14][C:15]3[CH:16]=[N:17][CH:18]=[CH:19][CH:20]=3)=[O:12])=[CH:9][CH:8]=2)=[N:4][C:3]=1[CH2:23][S:24]([CH:27]1[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]1)(=[O:26])=[O:25].[C:33]1(=O)[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]1.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[CH:33]1([N:30]2[CH2:29][CH2:28][CH:27]([S:24]([CH2:23][C:3]3[N:4]=[C:5]([C:7]4[CH:8]=[CH:9][C:10]([C:11]([NH:13][CH2:14][C:15]5[CH:16]=[N:17][CH:18]=[CH:19][CH:20]=5)=[O:12])=[CH:21][CH:22]=4)[O:6][C:2]=3[CH3:1])(=[O:25])=[O:26])[CH2:32][CH2:31]2)[CH2:38][CH2:37][CH2:36][CH2:35][CH2:34]1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 7967CyclohexanoneHCID 5049666Sodium triacetoxyborohydrideHCID 68278006HCID 68278006, compound

Product 1

HCID 68278058HCID 68278058, compoundYield 99%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

A solution of 4-[5-methyl-4-[(piperidine-4-sulfonyl)methyl]-1,3-oxazol-2-yl]-N-(pyridin-3-ylmethyl)benzamide (300 mg, 0.66 mmol, 1.00 equiv), cyclohexanone (98 mg, 1.00 mmol, 1.51 equiv) and acetic acid (120 mg, 2.00 mmol, 3.03 equiv) in 1,2-dichloroethane (10 mL) was stirred for 4 h at room temperature. To this was added sodium triacetoxyborohydride (420 mg, 1.98 mmol, 3.00 equiv). The resulting solution was stirred overnight at room temperature and then concentrated under vacuum. The residue was purified on a silica gel column with water/acetonitrile (95/5-20/80) to give 350 mg (99%) of 4-[4-[(1-cyclohexylpiperidine-4-sulfonyl)methyl]-5-methyl-1,3-oxazol-2-yl]-N-(pyridin-3-ylmethyl)benzamide as a white solid. LC-MS (ES, m/z): 537 [M+H]+; 1HNMR (300 MHz, CD3OD, ppm) δ 8.60 (s, 1H), 8.47 (d, 1H), 8.11 (d, 2H), 8.00 (d, 2H), 7.89 (d, 1H), 7.47-7.43 (m, 1H), 4.65 (s, 2H), 4.40 (s, 2H), 3.14 (d, 3H), 2.50 (d, 3H), 2.41-2.33 (m, 3H), 2.25 (d, 2H), 1.92-1.83 (m, 6H), 1.67 (d, 1H), 1.29-1.09 (m, 5H).

Workup

  1. concentrationconcentrated under vacuum
  2. customThe residue was purified on a silica gel column with water/acetonitrile (95/5-20/80)

Sources & evidence

ORD record
ord-f70f475c5e5746039da9b17667e07ec0
Source dataset
uspto-grants-2015_07
Patent number
US09085570B2

Reaction notes

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