Trifluoroacetic acid → Cyclopropanecarboxylic acid {2-methyl-5-[5-(3,4,5-trichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-furan-3-ylmethyl}-amide

HRID 68582

반응식

HRID 68582 반응식
[CH3:1][C:2]1[O:3][C:4]([C:9]2[CH2:13][C:12]([C:18]3[CH:23]=[C:22]([Cl:24])[C:21]([Cl:25])=[C:20]([Cl:26])[CH:19]=3)([C:14]([F:17])([F:16])[F:15])[O:11][N:10]=2)=[CH:5][C:6]=1[CH:7]=O.[CH:27]1([C:30]([NH2:32])=[O:31])[CH2:29][CH2:28]1.FC(F)(F)C(O)=O.C([SiH](CC)CC)C>C1(C)C=CC=CC=1>[CH3:1][C:2]1[O:3][C:4]([C:9]2[CH2:13][C:12]([C:18]3[CH:19]=[C:20]([Cl:26])[C:21]([Cl:25])=[C:22]([Cl:24])[CH:23]=3)([C:14]([F:16])([F:15])[F:17])[O:11][N:10]=2)=[CH:5][C:6]=1[CH2:7][NH:32][C:30]([CH:27]1[CH2:29][CH2:28]1)=[O:31]

참가 물질

6

반응물 4

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 80376CyclopropanecarboxamideHCID 867066532-Methyl-5-[5-(3,4,5-trichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-furan-3-carbaldehyde

생성물 1

HCID 86706657Cyclopropanecarboxylic acid {2-methyl-5-[5-(3,4,5-trichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-furan-3-ylmethyl}-amide수율 86.4%

시약·촉매·용매 1

HCID 1140Toluene용매

실험 절차

A mixture of 2-methyl-5-[5-(3,4,5-trichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-furan-3-carbaldehyde (250 mg, Example 3, step I), cyclopropanecarboxylic acid amide (160 mg), trifluoroacetic acid (0.142 ml) and triethylsilane (0.301 ml) in toluene (4 ml) is refluxed overnight. After 23 hours the reaction mixture is concentrated in vacuo. The crude product is purified on a semi-preparative HPLC to yield cyclopropanecarboxylic acid {2-methyl-5-[5-(3,4,5-trichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-furan-3-ylmethyl}-amide (251 mg, compound 2.2 in Table 2) as a yellowish foam. MS (HPLC/MS): 495 (MH+). Retention time: 2.02 min.

후처리

  1. temperatureis refluxed overnight
  2. concentrationAfter 23 hours the reaction mixture is concentrated in vacuo
  3. customThe crude product is purified on a semi-preparative HPLC

출처 및 근거

ORD 기록
ord-856336fd4dcb41e88ef6010aff5220e1
출처 데이터셋
uspto-grants-2014_09
특허 번호
US08822466B2

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