Hydrochloric Acid → 2,4,6-trimethyl-1H-indene

HRID 357664노트

반응식

HRID 357664 반응식
[CH3:1][CH:2]1[CH2:10][C:9]2[C:4](=[C:5]([CH3:12])[CH:6]=[C:7]([CH3:11])[CH:8]=2)[C:3]1=O.[BH4-].[Na+].Cl>O1CCCC1.CO>[CH3:1][C:2]1[CH2:10][C:9]2[C:4]([CH:3]=1)=[C:5]([CH3:12])[CH:6]=[C:7]([CH3:11])[CH:8]=2

참가 물질

5

반응물 3

HCID 313Hydrochloric AcidHCID 4311764Sodium borohydrideHCID 117690492,5,7-Trimethyl-1-indanone

생성물 1

HCID 109207862,4,6-trimethyl-1H-indene수율 96%

시약·촉매·용매 1

HCID 21899815MeOH tetrahydrofuran용매

실험 절차

20.4 g (117 mmol) of 2,5,7-trimethyl-1-indanone (1) were dissolved in 300 ml of a mixture of tetrahydrofuran/methanol (2:1), and 6.6 g (175 mmol) of NaBH4 were added at room temperature. The mixture was stirred for a further hour, 50 ml of half-concentrated HCl were added and the mixture was extracted with ether. The combined organic phases were dried over sodium sulfate and freed from the solvent. The residue was transferred to a distillation apparatus, and 13 g of magnesium sulfate were added. A vacuum of about 10 mbar was applied and the mixture was heated up until the product distilled over (130°-150° C.). Distillation gave 17.7 g of the indene 2 as a colorless oil. The yield was 96%.

후처리

  1. additionwere added at room temperature
  2. extractionthe mixture was extracted with ether
  3. dry with materialThe combined organic phases were dried over sodium sulfate
  4. additionwere added
  5. temperaturethe mixture was heated up until the product
  6. distillationdistilled over (130°-150° C.)
  7. distillationDistillation

출처 및 근거

ORD 기록
ord-79b5ff2f6a8541178628ef06ca7acf1c
출처 데이터셋
uspto-grants-1998_11
특허 번호
US05840948

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