反应详情

A solution of 0.104 g (0.374 mmol) of 3-butyl-1,2,3,4,5,6-hexahydro-benz[f]isoquinoline hydrochloride in 4 ml of anhydrous THF and 0.2 ml of aniline was added dropwise to a solution of 22 mg of lithium wire in 50 ml of liquid ammonia, cooled by a dry-ice/acetone bath. The cooling bath was then removed and the mixture was stirred under nitrogen for 2 h before quenching carefully with water (2 ml) and allowing the solvents to evaporate overnight. The residue was partitioned between ether and water, and the aqueous layer was reextracted with more ether. The combined ether extracts were dried (K2CO3) and evaporated in vacuo to leave a brown oil. This was chromatographed on flash silica eluting with 50% ethyl acetate/petroleum ether to give 31.7 mg (35%) of the title product as a colourless oil. The hydrochloride salt was made using ethereal hydrogen chloride. Upon evaporation of the solvent, the title product hydrochloride was obtained as a white solid, m.p. 217°-221° C. (dec). NMR δ(D2O) 0.96 (3H, t, J=7 Hz), 1.41 (2H, m), 1.51-1.92 (6H, m), 2.66-2.75 (2H, m), 2.86-2.95 (3H, m), 3.12-3.19 (3H, m), 3.63 (1H, m), 3.77 (1H, m), 7.22-7.28 (3H, m), 7.34-7.37 (1H, m). m/z (CI+, NH3) 244 (M+H)+, 200 (M--CH2CH2CH3)+. Analysis calcd. for C17H26ClN: C, 72.96; H, 9.36; N, 5.01%. Found: C, 72.86; H, 9.31; N, 4.80%.

1. temperaturecooled by a dry-ice/acetone bath
2. customThe cooling bath was then removed
3. custombefore quenching carefully with water (2 ml)
4. customto evaporate overnight
5. customThe residue was partitioned between ether and water
6. dry with materialThe combined ether extracts were dried (K2CO3)
7. customevaporated in vacuo
8. customto leave a brown oil
9. customThis was chromatographed on flash silica eluting with 50% ethyl acetate/petroleum ether