Benzamide → N-[(3S,4R)-3-Hydroxy-2,2-dimethyl-6-(trifluoromethoxy)-chroman-4-yl]-5-methyl-2-nitrobenzamide

HRID 483755노트

반응식

HRID 483755 반응식
[CH3:1][C:2]1[CH:3]=[CH:4][C:5]([N+:11]([O-:13])=[O:12])=[C:6]([CH:10]=1)[C:7]([OH:9])=O.S(Cl)(Cl)=O.[NH2:18][C@@H:19]1[C:28]2[C:23](=[CH:24][CH:25]=[C:26]([O:29][C:30]([F:33])([F:32])[F:31])[CH:27]=2)[O:22][C:21]([CH3:35])([CH3:34])[C@H:20]1[OH:36].C(N(CC)CC)C.C(N)(=O)C1C=CC=CC=1>C1C=CC=CC=1.ClCCl>[OH:36][C@H:20]1[C@H:19]([NH:18][C:7](=[O:9])[C:6]2[CH:10]=[C:2]([CH3:1])[CH:3]=[CH:4][C:5]=2[N+:11]([O-:13])=[O:12])[C:28]2[C:23](=[CH:24][CH:25]=[C:26]([O:29][C:30]([F:33])([F:31])[F:32])[CH:27]=2)[O:22][C:21]1([CH3:35])[CH3:34]

참가 물질

8

반응물 5

HCID 2331BenzamideHCID 8471TriethylamineHCID 183715-Methyl-2-nitrobenzoic acidHCID 24386Thionyl ChlorideHCID 15020328(3S,4R)-4-Amino-2,2-dimethyl-6-(trifluoromethoxy)-chroman-3-ol

생성물 1

HCID 67753930N-[(3S,4R)-3-Hydroxy-2,2-dimethyl-6-(trifluoromethoxy)-chroman-4-yl]-5-methyl-2-nitrobenzamide수율 82%

시약·촉매·용매 2

HCID 241Benzene용매HCID 6344Dichloromethane용매

실험 절차

5-Methyl-2-nitrobenzoic acid (1.81 g, 10 mmol) was converted to the corresponding acid chloride by refluxing in benzene (30 mL) with thionyl chloride (1.66 g, 14 mmol) for 0.5 hours. The crude mixture was concentrated in vacuo and diluted with dichloromethane (10 mL). This solution was added to a cooled solution of (3S, 4R)-4-amino-2,2-dimethyl-6-(trifluoromethoxy)-chroman-3-ol (2.75 g, 10 mmol), triethylamine (1.39 mL, 10 mmol) and dichloromethane (25 mL). The crude benzamide was worked-up in a method similar to that in Example 1 to afford 3.37 g (82%) of a white solid: m.p. 185°-187° C., 1H NMR (DMSO-d6): δ 9.12 (d, 1H), 7.96 (d, 1H), 7.60 (s, 1H), 7.51 (d, 1H, 7.38 (s, 1H), 7.16 (d, 1H), 6.86 (d, 1H), 5.84 (d, 1H), 5.00 (t, 1H), 3.66 (m, 1H), 2.45 (s, 3H), 1.43 (s, 3H), 1.20 (s, 3H).

후처리

  1. concentrationThe crude mixture was concentrated in vacuo
  2. additiondiluted with dichloromethane (10 mL)

출처 및 근거

ORD 기록
ord-62ec6949b17c4aada7d699614116470c
출처 데이터셋
uspto-grants-1993_07
특허 번호
US05225566

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