反应详情

温度

45 °C

1-((E)-6-iodo-3-methylhex-2-enyl)-2,5-dimethoxy-3,4,6-trimethylbenzene (412 mg, 1.024 mmol) was combined with NaCN (247.7 mg) and dissolved in DMF (2 mL). The reaction was stirred for 25 h at 45° C. then cooled to room temperature. To the mixture was added H2O (10 mL) followed by MTBE (6 mL) and the layers separated. The aqueous phase was extracted into MTBE (4×6 mL) and the combined organics washed with H2O (2×5 mL) followed by saturated NaCl solution (2×5 mL) and dried over Na2SO4. The organics were concentrated to give (E)-7-(2,5-dimethoxy-3,4,6-trimethylphenyl)-5-methylhept-5-enenitrile as a pale yellow oil, 306.4 mg (99.0%). 1H NMR (400 MHz, CDCl3) d 5.14 (t, J=6.4 Hz, 1H), 3.65 (s, 6H), 3.37 (d, J=6.8 Hz, 2H), 2.26 (t, J=7.2 Hz, 2H), 2.18 (s, 9H), 2.12 (t, J=7.2 Hz, 2H), 1.76 (m, 4H). 13C NMR (100 MHz, CDCl3) d 153.1, 152.6, 132.5, 131.0, 128.5, 128.0, 125.4, 119.7, 60.8, 60.1, 38.2, 38.2, 26.1, 23.5, 16.4, 15.9, 12.8, 12.7, 12.2.

1. temperaturethen cooled to room temperature
2. customthe layers separated
3. extractionThe aqueous phase was extracted into MTBE (4×6 mL)
4. washthe combined organics washed with H2O (2×5 mL)
5. dry with materialdried over Na2SO4
6. concentrationThe organics were concentrated