Acetic Acid → 2-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)propanal

HRID 1283677노트

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HRID 1283677 반응식
[O:1]=[C:2]1[C:8]2[CH:9]=[CH:10][C:11]([CH:13]([CH3:17])[C:14](Cl)=[O:15])=[CH:12][C:7]=2[CH:6]=[CH:5][C:4]2[CH:18]=[CH:19][CH:20]=[CH:21][C:3]1=2.O.N(C(NC1C=CC=CC=1)C)C1C=CC=CC=1.C(O)(=O)C>COCCOCCOC.CO>[O:1]=[C:2]1[C:8]2[CH:9]=[CH:10][C:11]([CH:13]([CH3:17])[CH:14]=[O:15])=[CH:12][C:7]=2[CH:6]=[CH:5][C:4]2[CH:18]=[CH:19][CH:20]=[CH:21][C:3]1=2

참가 물질

7

반응물 4

HCID 176Acetic AcidHCID 962WaterHCID 15852811DianilinoethaneHCID 203106912-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)propionyl chloride

생성물 1

HCID 214093832-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)propanal

시약·촉매·용매 2

HCID 887Methanol용매HCID 8150Diglyme용매2회

실험 절차

0.25 G. of 2-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)-propionyl chloride (as prepared in Preparation 10 above) is dissolved in 4 ml. of diglyme and the solution cooled to -78°C. 3.5 Ml. of 0.045 molar lithium aluminum tri-tertiary butoxy hydride in diglyme is added, in 0.5 ml. portions over the course of 1 hour, to this solution. The mixture is warmed to room temperature and poured into water and extracted with ether. The extract is washed, dried and evaporated to give a crude product to which is added a solution of 0.106 g. of dianilinoethane and 0.072 g. of acetic acid in 5 ml. of methanol. The mixture is left for 1 hour than decanted from the insoluble product, α-(1,3-diphenyl-2-imidazolidinyl) 2-ethyl-5-oxo-5H-dibenzo[a,d]cycloheptene [a gum; nmr spectrum in deuterochloroform relative to tetramethylsilane: 1.47 (doublet, CHCH3), 5.77 (singlet, N-CH-N) acid 6.90 ppm (singlet, 10H, 11H). This compound is dissolved in 10 ml. of ether and the solution shaken with dilute hydrochloric acid. The ethereal layer is dried and evaporated to give 2-(5-oxo-5H-dibenzo[a,d]cyclohepten-2-yl)propanal [a gum; nmr spectrum in deuterochloroform relative to tetramethylsilane: 0.98 (doublet, CHCH3), 3.78 (quartet, CHCH3), 7.02 (singlet, 10H, 11H) and 9.72 ppm (doublet, CHO); mass spectrum: 262 (M+) 233, 205] .

후처리

  1. customover the course of 1 hour
  2. extractionextracted with ether
  3. washThe extract is washed
  4. customdried
  5. customevaporated
  6. customto give a crude product to which
  7. additionis added a solution of 0.106 g
  8. customthan decanted from the insoluble product, α-(1,3-diphenyl-2-imidazolidinyl) 2-ethyl-5-oxo-5H-dibenzo[a,d]cycloheptene [a gum
  9. dissolutionThis compound is dissolved in 10 ml
  10. customThe ethereal layer is dried
  11. customevaporated

출처 및 근거

ORD 기록
ord-f53dbed02c7c49e79c130b6b9480a3d6
출처 데이터셋
uspto-grants-1976_08
특허 번호
US03975540

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