Sodium Acetate → 7-fluoro-6-trifluoroacetylmethylidenhydrazino-4-propargyl-2H-1,4-benzoxazin-3-one

HRID 1700051

반응식

HRID 1700051 반응식
C([O-])(=O)C.[Na+].Br[CH:7](Br)[C:8]([C:10]([F:13])([F:12])[F:11])=[O:9].[F:15][C:16]1[C:29]([NH:30][NH2:31])=[CH:28][C:19]2[N:20]([CH2:25][C:26]#[CH:27])[C:21](=[O:24])[CH2:22][O:23][C:18]=2[CH:17]=1>O>[F:15][C:16]1[C:29]([NH:30][N:31]=[CH:7][C:8](=[O:9])[C:10]([F:13])([F:12])[F:11])=[CH:28][C:19]2[N:20]([CH2:25][C:26]#[CH:27])[C:21](=[O:24])[CH2:22][O:23][C:18]=2[CH:17]=1

참가 물질

5

반응물 3

HCID 517045Sodium AcetateHCID 5505231,1-Dibromo-3,3,3-trifluoroacetoneHCID 145179487-fluoro-6-hydrazino-4-propargyl-2H-1,4-benzoxazin-3-one

생성물 1

HCID 739799877-fluoro-6-trifluoroacetylmethylidenhydrazino-4-propargyl-2H-1,4-benzoxazin-3-one

시약·촉매·용매 1

HCID 962Water용매

실험 절차

To a mixed solution of 8.0 g (97.2 mmol) of sodium acetate and 50 ml of water was added under ice cooling 6.6 g (24.3 mmol) of 1,1-dibromo-3,3,3-trifluoroacetone, and the reaction was allowed to proceed at 80° C. for 30 minutes. Then, the reaction mixture was cooled to 0° C., to which 4.4 g (18.7 mmol) of 7-fluoro-6-hydrazino-4-propargyl-2H-1,4-benzoxazin-3-one was added, and the reaction mixture was stirred at room temperature for 2 hours. The precipitated crystals were collected by filtration, washed twice with 10 ml of water, and dried, which afforded 6.3 g (18.37 mmol) of 7-fluoro-6-trifluoroacetylmethylidenhydrazino-4-propargyl-2H-1,4-benzoxazin-3-one [another name: 3,3,3-trifluoro-2-oxopropanal 1-(7-fluoro-3-oxo-4-propargyl-2H-1,4-benzoxazin-6-ylhydrazone)], m.p. 190.6° C. (decomp.).

후처리

  1. additionwas added
  2. filtrationThe precipitated crystals were collected by filtration
  3. washwashed twice with 10 ml of water
  4. customdried

출처 및 근거

ORD 기록
ord-26f65952b53d46f4a441213abad5e02b
출처 데이터셋
uspto-grants-2002_02
특허 번호
US06348628B1

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