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Benzhydrylamine → 1-benzhydrylazetidin-3-ol Hydrochloride

HRID 974536
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HRID 974536 반응식
[CH:1]([NH2:14])([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH2:15]([CH:17]1[O:19][CH2:18]1)[Cl:16].C(N(CC)CC)C.CS(Cl)(=O)=O.FC(F)(F)C1C=C(O)C=CC=1.[OH-].[Na+]>C1(C)C=CC=CC=1.C(Cl)Cl.[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C(O)(C)C.O.C(OCC)(=O)C>[ClH:16].[C:2]1([CH:1]([C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=2)[N:14]2[CH2:18][CH:17]([OH:19])[CH2:15]2)[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

13

반응물 6

HCID 7036BenzhydrylamineHCID 73763-(Trifluoromethyl)phenolHCID 7835EpichlorohydrinHCID 8471TriethylamineHCID 14798Sodium HydroxideHCID 31297Methanesulfonyl chloride

생성물 1

HCID 28017261-benzhydrylazetidin-3-ol Hydrochloride

시약·촉매·용매 6

HCID 74236Tetrabutylammonium Bromide촉매HCID 962Water용매2회HCID 1140Toluene용매HCID 3776Isopropanol용매HCID 6344Dichloromethane용매HCID 8857Ethyl Acetate용매

실험 절차

N-Diphenylmethyl-3-hydroxyazetidine hydrochloride (I) was prepared from benzhydrylamine and epichlorohydrin according to Anderson and Lok, J. Org. Chem., 37:3953 (1972). I (41.33 g, 0.15 mole) and triethylamine (42 ml, 0.30 mole) were stirred in toluene (250 ml) while methane sulfonylchloride (12 ml, 0.15 m) was added dropwise over 10 minutes with stirring and the temperature was maintained between 4° and 12° C. TLC (silica gel, 10% ethyl acetate in methylene chloride) at one hour showed all starting materials had reacted. The mixture was filtered to remove the triethylamine hydrochloride which was rinsed twice with toluene. The filtrate and washings combined to about 450 ml of solution. To this solution was added m-trifluoromethylphenol (27.5 g, 0.17 mole), tetrabutyl ammonium bromide (2.4 g), 50% sodium hydroxide (24 g, 0.3 mole) and water (24 ml) and the mixture was stirred vigorously and heated to reflux under nitrogen for 2.5 hr. The toluene layer of the mixture was separated and washed once with water dried over sodium sulfate and evaporated to an oil. This oil was seeded and pumped on an oil pump overnight. A solid cake weighing 49.7 was obtained. Some of this solid was dissolved in isopropanol with brief heating. Water was then added to cause slight cloudiness. The mixture was seeded and cooled to cause crystallization. The white solid was collected by filtration, washed with 50% aquous isopropanol, and dried under vacuum overnight. Proton NMR showed slight contamination by silicone oil, m.p. 82.5°-84° C.

후처리

  1. additionwas added dropwise over 10 minutes
  2. temperaturethe temperature was maintained between 4° and 12° C
  3. customall starting materials had reacted
  4. filtrationThe mixture was filtered
  5. customto remove the triethylamine hydrochloride which
  6. washwas rinsed twice with toluene
  7. stirringthe mixture was stirred vigorously
  8. temperatureheated
  9. temperatureto reflux under nitrogen for 2.5 hr
  10. customThe toluene layer of the mixture was separated
  11. washwashed once with water
  12. dry with materialdried over sodium sulfate
  13. customevaporated to an oil
  14. customwas obtained
  15. temperaturecooled
  16. customcrystallization
  17. filtrationThe white solid was collected by filtration
  18. washwashed with 50% aquous isopropanol
  19. customdried under vacuum overnight

출처 및 근거

ORD 기록
ord-7b5947a4ee6646e9b18d469e3045f916
출처 데이터셋
uspto-grants-1991_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US05068231

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