反应详情

Methyl 1-allyl-2-oxocyclopentane-1-carboxylate (1.1 kg) is added to 1100 ml of methanol previously saturated with ammonia gas at ice bath temperature. The reaction mixture is stirred first at ice bath temperature and then at room temperature overnight with constant introduction of ammonia. The reaction mixture is evaporated to dryness to yield starting material and a mixture of 5-methoxycarbonyl-oct-7-enoic acid amide and methyl 5-methoxycarbonyl-oct-7-enoate. The residue is distilled under reduced pressure to yield a mixture of the diester and ester amide. A portion (25 g) is added dropwise over 40 min to 23.6 g of thionyl chloride and the mixture is heated at 80° for 30 min. The reaction mixture is evaporated to dryness under water vacuum and then distilled under high vacuum to yield 5-methoxycarbonyl-oct-7-enenitrile.

1. customat room temperature
2. customovernight
3. customThe reaction mixture is evaporated to dryness
4. customto yield
5. distillationThe residue is distilled under reduced pressure
6. customto yield
7. temperaturethe mixture is heated at 80° for 30 min
8. customThe reaction mixture is evaporated to dryness under water vacuum
9. distillationdistilled under high vacuum