반응식
[CH:1]1[C:9]2[C:8]3[CH:10]=[CH:11][CH:12]=[CH:13][C:7]=3[S:6][C:5]=2[CH:4]=[CH:3][CH:2]=1.[C:14](Cl)(=[O:18])[C:15]([CH3:17])=[CH2:16]>>[CH3:16][CH:15]1[CH2:17][C:10]2[C:8]3[C:9]4[CH:1]=[CH:2][CH:3]=[CH:4][C:5]=4[S:6][C:7]=3[CH:13]=[CH:12][C:11]=2[C:14]1=[O:18]참가 물질
실험 절차
For the synthesis of the compounds according to the invention, the operation started with 2-methyl indan-1-one and, in a three-step method, the desired 2-methyl indene was obtained in a yield of over 60%. As emerges from the diagram, m-xylene (1) is converted in a first step with methacryloyl chloride. The purified indanone (2) is obtained after cleaning by distillation and Friedel-Crafts alkylation in a yield of 66%. The reduction of the indanone (2) is implemented with NaBH4. The indene (3) is obtained as a viscous fluid. By reaction of the compound (4), which is produced by addition of 1,2-dibromoethane and fluorenyl lithium, the two isomers (5) and (6) are obtained in a subsequent reaction in a yield of 45%. The desired isomer 5 can then be isolated by crystallisation from toluene/hexane in a ratio of 1:2.
출처 및 근거
- ORD 기록
- ord-4449effd8ebb40348511d6d12553f227
- 출처 데이터셋
- uspto-grants-2008_06
- 특허 번호
- US07381679B2
연결된 노트
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