Methyl 2-chloroacrylate → HCID 11034029, 화합물

HRID 399258

반응식

HRID 399258 반응식
[F:1][C:2]([F:15])([F:14])[CH2:3][N:4]=[C:5](Cl)[C:6]1[CH:11]=[CH:10][C:9]([Cl:12])=[CH:8][CH:7]=1.Cl[C:17](=[CH2:22])[C:18]([O:20][CH3:21])=[O:19].N12CCCN=C1CCCCC2>CN(C)C=O>[Cl:12][C:9]1[CH:10]=[CH:11][C:6]([C:5]2[NH:4][C:3]([C:2]([F:15])([F:14])[F:1])=[CH:22][C:17]=2[C:18]([O:20][CH3:21])=[O:19])=[CH:7][CH:8]=1

참가 물질

5

반응물 3

HCID 6659Methyl 2-chloroacrylateHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 1180727188708-78-5

생성물 1

HCID 11034029HCID 11034029, 화합물수율 34.6%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

A solution of N-(2,2,2-trifluoroethyl)-4-chlorobenzimidoyl chloride (10.2 g, 0.04 mol) and methyl 2-chloroacrylate (5.8 g, 0.048 mol) in N,N-dimethylformamide is treated with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU, 19.5 g, 0.128 mol) over 30 minutes at such a rate that the temperature is kept at 40° C., stirred for two hours, and quenched with water and ethyl acetate. The organic layer is separated, washed sequentially with aqueous HCl and water, and concentrated in vacuo to obtain an oil. Flash column chromatography of the oil using silica gel and a 20% ethyl acetate in heptane solution and crystallization from heptane gives the title product as white crystals (4.2 g, 34.6% yield, mp 120.0°-122.5° C.).

후처리

  1. customis kept at 40° C.
  2. customquenched with water and ethyl acetate
  3. customThe organic layer is separated
  4. washwashed sequentially with aqueous HCl and water
  5. concentrationconcentrated in vacuo
  6. customto obtain an oil
  7. customa 20% ethyl acetate in heptane solution and crystallization from heptane

출처 및 근거

ORD 기록
ord-813d463d2b574c59abd361db82714feb
출처 데이터셋
uspto-grants-1998_10
특허 번호
US05817834

연결된 노트

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