反应详情

To a solution of 15.0 g (0.05 mole) of 2-(2-chloroethyl)-2,3-dihydro-4-methylnaphth[2,1-f][1,4]-oxazepine-5(4H)-thione in 50 ml of absolute ethanol was added 10 g of a 40% aqueous solution of dimethylamine. The resulting solution was heated in a steel bomb at 100° C. for 40 hr and concentrated under reduced pressure. The residue was partitioned between 15% aqueous sodium hydroxide and chloroform. The chloroform layer was evaporated and the residue partitioned between 3N hydrochloric acid and chloroform. The aqueous layer was made alkaline with 50% sodium hydroxide and extracted with chloroform. The chloroform extract was concentrated and the residue dissolved in isopropyl alcohol. Ethereal hydrogen chloride was added. Recrystallization of the precipitate from isopropyl alcohol/water gave 3.0 g (20%) of the product, m.p. 238°-240° C.

1. concentrationconcentrated under reduced pressure
2. customThe residue was partitioned between 15% aqueous sodium hydroxide and chloroform
3. customThe chloroform layer was evaporated
4. customthe residue partitioned between 3N hydrochloric acid and chloroform
5. extractionextracted with chloroform
6. extractionThe chloroform extract
7. concentrationwas concentrated
8. dissolutionthe residue dissolved in isopropyl alcohol
9. additionEthereal hydrogen chloride was added
10. customRecrystallization of the precipitate from isopropyl alcohol/water