Trimethylolpropane → Trimethylolpropane tris(2-mercaptoisobutyrate)

HRID 1392000

반응식

HRID 1392000 반응식
[CH2:1]([C:3]([CH2:8][OH:9])([CH2:6][OH:7])[CH2:4][CH3:5])[OH:2].[SH:10][C:11]([CH3:16])([CH3:15])[C:12]([OH:14])=[O:13].CC1C=CC(S(O)(=O)=O)=CC=1.O.C(=O)([O-])O.[Na+]>C1(C)C=CC=CC=1>[SH:10][C:11]([CH3:16])([CH3:15])[C:12]([OH:14])=[O:13].[SH:10][C:11]([CH3:16])([CH3:15])[C:12]([OH:14])=[O:13].[SH:10][C:11]([CH3:16])([CH3:15])[C:12]([OH:14])=[O:13].[CH2:1]([C:3]([CH2:8][OH:9])([CH2:6][OH:7])[CH2:4][CH3:5])[OH:2]

참가 물질

6

반응물 4

HCID 6510TrimethylolpropaneHCID 784212-Mercapto-2-methylpropanoic acidHCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrate

생성물 1

HCID 86599597Trimethylolpropane tris(2-mercaptoisobutyrate)

시약·촉매·용매 1

HCID 1140Toluene용매

반응 조건

온도
145 °C

실험 절차

In a 100-ml eggplant-shaped flask were charged 2.68 g (20 mmol) of trimethylolpropane (manufactured by Tokyo Kasei Kogyo Co., Ltd.), 7.57 g (63 mmol) of 2-mercaptoisobutanoic acid, 0.23 g (1.2 mmol) of p-toluenesulfonic acidmonohydrate, and 20 g of toluene, and a Dean-Stark apparatus and a condenser tube were equipped thereto. While the contents being stirred, they were heated at an oil bath temperature of 145° C. After 3 hours from the start of the reaction, the reaction mixture was left to cool and neutralized with 50 ml of an aqueous 5% sodium hydrogen carbonate solution. Further, the reaction mixture was washed with deionized water two times, and then dehydrated and dried over anhydrous magnesium sulfate. Then, the toluene was distilled off and the residue was subjected to column chromatography with silica gel to purify TPMIB. The silica gel used was Wako Gel C-200, and n-hexane/ethyl acetate=5/1 (by volume ratio) was used as an elution solvent. The TPMIB obtained by the purification was a white crystal and the yield was 4.50 g (51%). The TPMIB had a compositional formula of Cl18H32O6S3 and a molecular weight of 440.64.

후처리

  1. customa Dean-Stark apparatus and a condenser tube were equipped
  2. customAfter 3 hours from the start of the reaction
  3. waitthe reaction mixture was left
  4. temperatureto cool
  5. washFurther, the reaction mixture was washed with deionized water two times
  6. dry with materialdried over anhydrous magnesium sulfate
  7. distillationThen, the toluene was distilled off
  8. customto purify TPMIB
  9. customThe TPMIB obtained by the purification

출처 및 근거

ORD 기록
ord-d615ad357d134a70b7879b8ccaba5733
출처 데이터셋
uspto-grants-2008_03
특허 번호
US07341828B2

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