Phosphorus sulfide (P2S5) → 2-(chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f]-1,4-oxazepine-5(4H)thione
反応式
Cl.[Cl:2][CH2:3][CH2:4][CH:5]1[CH2:11][N:10]([CH3:12])[C:9](=O)[C:8]2[CH:14]=[CH:15][CH:16]=[N:17][C:7]=2[O:6]1.P12(SP3(SP(SP(S3)(S1)=S)(=S)S2)=S)=[S:19]>C(Cl)(Cl)Cl>[Cl:2][CH2:3][CH2:4][CH:5]1[CH2:11][N:10]([CH3:12])[C:9](=[S:19])[C:8]2[CH:14]=[CH:15][CH:16]=[N:17][C:7]=2[O:6]1参加物
4
実験手順
To a solution of 59 g (0.25 mole) of 2-(2-chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f][1,4]oxazepin-5(4H)one hydrochloride in 1500 ml of chloroform was added 41.5 g (0.19 mole) of phosphorus pentasulfide and the mixture was heated to reflux for 18 hr. The mixture was filtered and the filtrate was extracted with dilute sodium hydroxide. The chloroform layer was concentrated and the residue was dissolved in 250 ml of boiling isopropyl alcohol. On cooling, 28 g (44%) of yellow solid precipitated. A portion was recrystallized from isopropyl alcohol, m.p. 134°-136° C.