反应详情

To a mixture of 15.5 g. of 2-vinylnaphthalene and 300 ml. of chloroform, a 5 percent bromine in chloroform solution is added at -10° C until the bromine color persists. The mixture is then added to 200 ml. of ammonia containing 15 g. of sodium amide. The mixture is allowed to evaporate, acidified with dilute hydrochloric acid, and the residue is extracted with diethyl ether. The extracts are combined, washed to neutrality with water, dried, and evaporated to yield 2-ethynylnaphthalene.

1. additionTo a mixture of 15.5 g
2. additionThe mixture is then added to 200 ml
3. customto evaporate
4. extractionthe residue is extracted with diethyl ether
5. washwashed
6. customdried
7. customevaporated