1-Bromo-3-chloropropane → HCID 21250986、化合物
反応式
[C:1]([NH:9][CH:10]1[CH2:15][CH2:14][NH:13][CH2:12][CH2:11]1)(=[O:8])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH3:7].C(N(CC)CC)C.Br[CH2:24][CH2:25][CH2:26][Cl:27]>O1CCCC1>[C:1]([NH:9][CH:10]1[CH2:15][CH2:14][N:13]([CH2:24][CH2:25][CH2:26][Cl:27])[CH2:12][CH2:11]1)(=[O:8])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH3:7]参加物
5
実験手順
A mixture of 4-heptanoylaminopiperidine (7.49 g; preparation 16), triethylamine (9.79 ml) and 1-bromo-3-chloropropane (5.38 ml) in 200 ml of dry tetrahydrofuran was refluxed for 4 hours, then a further 9.79 ml of triethylamine and 5.38 ml of 1-bromo-3-chloropropane were added. The reaction mixture was refluxed overnight, then concentrated to dryness, treated with 100 ml of saturated aqueous potassium carbonate solution and extracted with ethyl acetate (2×100 ml). The organic extracts were pooled, dried over sodium sulfate and concentrated to dryness to give 15 g of an oil which was purified by silica gel chromatography (eluent chloroformlmethanol 9:1) to give, after crystallization from 30 ml of hexane, 6.12 g of the product, m.p. 68-70° C.