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Thionyl Chloride → (+)-4,5-dihydro-1-[[hydroxy(4-phenylbutyl)phosphinyl]acetyl]-3-phenyl-1H-pyrazole-5-carboxylic acid, phenylmethyl ester

HRID 1757940
ノート
印刷プレビュー

反応式

HRID 1757940 の反応式
[OH:1][P:2]([CH2:14][C:15]([OH:17])=O)([CH2:4][CH2:5][CH2:6][CH2:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)=[O:3].S(Cl)(Cl)=O.Cl.[C:23]1([C:29]2[CH2:33][CH:32]([C:34]([O:36][CH2:37][C:38]3[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=3)=[O:35])[NH:31][N:30]=2)[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.ClC(OC(=O)C(C)(C)C)C(OCC)=O>C(N(CC)CC)C.ClCCl.CN(C)C=O>[OH:1][P:2]([CH2:14][C:15]([N:31]1[CH:32]([C:34]([O:36][CH2:37][C:38]2[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=2)=[O:35])[CH2:33][C:29]([C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)=[N:30]1)=[O:17])([CH2:4][CH2:5][CH2:6][CH2:7][C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=1)=[O:3]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 4

HCID 24386Thionyl ChlorideHCID 13102401((4-Phenylbutyl)hydroxyphosphoryl)acetic acid2 回HCID 13102402Ethyl 2-chloro-2-pivaloyloxyacetateHCID 131712948(+)-4,5-dihydro-3-phenyl-1H-pyrazole-5-carboxylic acid, phenylmethyl ester, hydrochloride

生成物 1

HCID 86738774(+)-4,5-dihydro-1-[[hydroxy(4-phenylbutyl)phosphinyl]acetyl]-3-phenyl-1H-pyrazole-5-carboxylic acid, phenylmethyl ester

試薬・触媒・溶媒 3

HCID 6228Dimethylformamide溶媒HCID 6344Dichloromethane溶媒2 回HCID 8471Triethylamine溶媒

実験手順

A solution of 10 g. of [hydroxy(4-phenylbutyl)phosphinyl]acetic acid, from part (b), in 40 ml. of dry dichloromethane containing 0.2 ml. of dimethylformamide is heated to reflux temperature. Thionyl chloride (5.1 g.) is added dropwise while maintaining the temperature at reflux. After an additional 30 minutes heating, the solution is cooled to 5° and a solution of 11.6 g. of (+)-4,5-dihydro-3-phenyl-1H-pyrazole-5-carboxylic acid, phenylmethyl ester, hydrochloride (1:1), from part (a), in 50 ml. of dichloromethane is added at once, followed by dropwise addition of 11.9 g. of triethylamine while the temperature is maintained at 5°-10° with cooling. After stirring overnight at ambient temperature, the mixture is washed three times with aqueous hydrochloric acid (1.5 N) and three times with water. The organic solution is dried (MgSO4) and concentrated in vacuo to give (+)-4,5-dihydro-1-[[hydroxy(4-phenylbutyl)phosphinyl]acetyl]-3-phenyl-1H-pyrazole-5-carboxylic acid, phenylmethyl ester which can be crystallized from acetone.

後処理

  1. temperatureto reflux temperature
  2. temperaturewhile maintaining the temperature
  3. temperatureat reflux
  4. temperatureAfter an additional 30 minutes heating
  5. temperaturethe solution is cooled to 5°
  6. additionfollowed by dropwise addition of 11.9 g
  7. temperaturewith cooling
  8. washthe mixture is washed three times with aqueous hydrochloric acid (1.5 N) and three times with water
  9. dry with materialThe organic solution is dried (MgSO4)
  10. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-f4301a53468d4adb8c4fabee82167e4d
出典データセット
uspto-grants-1983_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04371526

反応ノート

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