Cyclohexylamine → N-Cyclohexyl-alpha-[2-(1,2,3,4,10,14b-hexahydrodibenzo[c,f]pyrazino[1,2-a]azepin-2-yl)ethoxy]acetamide

Participants

Reaction Steps

358 g of 2-(1,2,3,4,10,14b-hexahydrodibenzo[c,f]pyrazino[1,2-a]azepin-2-yl)ethoxyacetic acid (prepared as described in Example 2), 0.1 g of cyclohexylamine and 0.11 g of triethylamine were added to 10 ml of tetrahydrofuran, and 0.17 g of diethyl cyanophosphonate was added dropwise to the mixture, whilst ice-cooling. The mixture was then stirred at room temperature for 5 hours, after which it was mixed with water and then extracted with methylene chloride. The extract was concentrated by evaporation under reduced pressure, and the residue was subjected to column chromatography through silica gel, using 10 % by volume ethanol in ethyl acetate as the eluent, to afford 0. 4 g (yield 91%) of the title compound.

Provenance & Evidence