Acetic Acid → 2-(3-Chloro-4-methoxyphenyl)ethan-1-amine

HRID 654003노트

반응식

HRID 654003 반응식
CO[NH:3][CH2:4][CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[ClH:12].ClCl.[C:15]([OH:18])(=O)C>O>[Cl:12][C:10]1[CH:11]=[C:6]([CH:7]=[CH:8][C:9]=1[O:18][CH3:15])[CH2:5][CH2:4][NH2:3]

참가 물질

6

반응물 4

HCID 176Acetic AcidHCID 313Hydrochloric AcidHCID 24526ChlorineHCID 121190Methoxyphenylethylamine

생성물 1

HCID 27576442-(3-Chloro-4-methoxyphenyl)ethan-1-amine수율 26.4%

시약·촉매·용매 1

HCID 962Water용매

실험 절차

Methoxyphenethyl amine (39.4 g, 0.261 mol) was dissolved in water (300 mL) and concentrated HCl(22mL). To this solution was added chlorine gas (20.3 g, 0.287 mol) in glacial acetic acid (300 mL) over a 15 minute period while maintaining the temperature below 35° C. After standing for ten minutes, the volatiles were removed in vacuo and the dark solid residue was dissolved in absolute ethanol (100 mL) and allowed to crystallize at -10° C. The collected precipitate was dissolved in a mixture of saturated sodium bicarbonate (400 mL) and dichloromethane (400 mL). The organic layer was separated and dried over anhydrous sodium sulfate. It was condensed on a rotorevaporator to afford a dark oil which was distilled (115°-116° C./1.75 mm Hg) to give 12.8 g(26.4%) of a clear oil. 1R (neat) 3600-3310 (br,NH2), 1600, 1500, 1250 and 1060 cm-1 ; 1H NMR(CDCl3)δ,d 7.36-6.71 (m, 3H, ArH), 3.85 (S, 3H, OCH3), 3.15-2.48 (m, 4H, (CH2)2), 1.12(S, 2H, NH2).

후처리

  1. temperaturewhile maintaining the temperature below 35° C
  2. waitAfter standing for ten minutes
  3. customthe volatiles were removed in vacuo
  4. dissolutionthe dark solid residue was dissolved in absolute ethanol (100 mL)
  5. customto crystallize at -10° C
  6. dissolutionThe collected precipitate was dissolved in a mixture of saturated sodium bicarbonate (400 mL) and dichloromethane (400 mL)
  7. customThe organic layer was separated
  8. dry with materialdried over anhydrous sodium sulfate
  9. customcondensed on a rotorevaporator
  10. customto afford a dark oil which
  11. distillationwas distilled (115°-116° C./1.75 mm Hg)

출처 및 근거

ORD 기록
ord-cbc453b1eab04b818a36644847e6a2b8
출처 데이터셋
uspto-grants-1992_07
특허 번호
US05130117

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