Lawesson's reagent → 2-(2-Chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f][1,4]-thiazepine-5(4H)-thione

참여 물질

반응 단계

A mixture of 4.3 g (0.017 mole) of 2-(2-chloroethyl)-2,3-dihydro-4-methylpyrido[3,2-f][1,4]thiazepin-5(4H)-one, 100 ml of toluene and 4.8 g (0.012 mole) of 2,4-bis(4-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulfide was refluxed for 3 hr and then extracted twice with dilute sodium hydroxide. The organic layer was concentrated and the residue chromatographed on the high pressure liquid chromatograph using a silica column and 50% ethyl acetate-50% hexane. The yield of title compound was 2 g, m.p. 160°-162° C.

출처 및 근거