Thionyl Chloride → 4-Chloro-2-butynyl 4-Cyano-3,4-diphenylbutyrate

HRID 1446781

반응식

HRID 1446781 반응식
S(Cl)([Cl:3])=O.[C:5]([CH:7]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[CH:8]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[CH2:9][C:10]([O:12][CH2:13][C:14]#[C:15][CH2:16]O)=[O:11])#[N:6]>N1C=CC=CC=1.CCOCC.C(Cl)Cl>[C:5]([CH:7]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)[CH:8]([C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[CH2:9][C:10]([O:12][CH2:13][C:14]#[C:15][CH2:16][Cl:3])=[O:11])#[N:6]

참가 물질

6

반응물 2

HCID 24386Thionyl ChlorideHCID 128348444-Hydroxy-2-butynyl 4-Cyano-3,4-diphenylbutyrate

생성물 1

HCID 128348464-Chloro-2-butynyl 4-Cyano-3,4-diphenylbutyrate수율 25%

시약·촉매·용매 3

HCID 1049Pyridine용매HCID 3283Diethyl Ether용매HCID 6344Dichloromethane용매

실험 절차

Thionyl chloride (3.56 g, 30.0 mmol) was added via syringe over a 5 min period to a stirred solution of 8.00 g (24.0 mmol) of 4-hydroxy-2-butynyl 4-cyano-3,4-diphenylbutyrate in 2.4 ml of pyridine at 0°. The reaction mixture was stirred at room temperature for 2 hours in a flask equipped with a Drierite tube. The mixture was diluted with 40 ml of ether and 100 ml of methylene chloride and was washed sequentially with 40 ml of hydrochloric acid, 40 ml of saturated aqueous sodium bicarbonate, three 40-ml portions of water and 40 ml of saturated aqueous sodium chloride. The organic phase was dried (MgSO4), filtered, stripped and purified by column chromatography on silica gel (hexanes/methylene chloride) to yield 2.11 g (25%) of the title compound. The infrared and nmr spectra are in accord with the assigned structure.

후처리

  1. customequipped with a Drierite tube
  2. washwas washed sequentially with 40 ml of hydrochloric acid, 40 ml of saturated aqueous sodium bicarbonate, three 40-ml portions of water and 40 ml of saturated aqueous sodium chloride
  3. dry with materialThe organic phase was dried (MgSO4)
  4. filtrationfiltered
  5. custompurified by column chromatography on silica gel (hexanes/methylene chloride)

출처 및 근거

ORD 기록
ord-ec694ac4c690430b851d8aa9c7c37fa6
출처 데이터셋
uspto-grants-1982_02
특허 번호
US04313754

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