Benzyl Alcohol → Benzyl 3-bromopropanoate

HRID 343463노트

반응식

HRID 343463 반응식
O.[C:2]1([CH3:12])[CH:7]=[CH:6][C:5](S(O)(=O)=O)=[CH:4][CH:3]=1.[Br:13][CH2:14][CH2:15][C:16]([OH:18])=[O:17].C(O)C1C=CC=CC=1>C1C=CC=CC=1>[CH2:12]([O:18][C:16](=[O:17])[CH2:15][CH2:14][Br:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

5

반응물 3

HCID 244Benzyl AlcoholHCID 115533-Bromopropionic acidHCID 521998p-Toluenesulfonic acid monohydrate

생성물 1

HCID 252570Benzyl 3-bromopropanoate수율 56%

시약·촉매·용매 1

HCID 241Benzene용매

실험 절차

A spatula tip full of p-toluenesulfonic acid monohydrate was added to a solution of 3-bromopropionic acid (20.49 g, 0.134 mol) and benzyl alcohol (15 mL, ~15.7 g, 0.145 mol) in benzene (150 mL). A Dean-Stark trap was fitted to the reaction vessel and the solution was held at reflux with overnight stirring. After 16 hr at reflux, the reaction was cooled, washed with saturated sodium bicarbonate, dried (Na2SO4), and concentrated to an oil (28.78 g). Fractional distillation at reduced pressure (0.18 torr) gave the desired product as a colorless liquid (18.49 g, 56%) boiling in the range 99°-109° C.

후처리

  1. customA Dean-Stark trap was fitted to the reaction vessel
  2. temperatureat reflux with overnight
  3. temperatureAfter 16 hr at reflux
  4. temperaturethe reaction was cooled
  5. washwashed with saturated sodium bicarbonate
  6. dry with materialdried (Na2SO4)
  7. concentrationconcentrated to an oil (28.78 g)
  8. distillationFractional distillation at reduced pressure (0.18 torr)

출처 및 근거

ORD 기록
ord-c7e51193a5394d8895bd4e787eef79d9
출처 데이터셋
uspto-grants-1999_01
특허 번호
US05861428

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