HCID 21242077, compound → HCID 21242084, compound

Participants

Reaction Steps

A solution of 4-(2-methoxyphenyl)-2-[4-(4-methylbenzyl)-1-piperazinyl]-1-azaspiro[4.5]deca-1,3,6,9-tetraen-8-one (2.8 g) in 1,2,4-trichlorobenzene (80 cc) is heated for 4 hours at a temperature of about 210° C. After evaporation to dryness under reduced pressure (1 mm Hg; 0.13 kPa) at 40° C., the residue obtained is dissolved in methylene chloride (50 cc) and the solution is poured into silica (60 g) contained in a column 2 cm in diameter. Elution is first performed with a mixture of methylene chloride and methanol (99:1 by volume) (200 cc); the corresponding eluates are rejected. Eluation is then performed with a mixture of methylene chloride and methanol (99:1 by volume) (450 cc) and the corresponding eluate is evaporated to dryness under reduced pressure (20 mm Hg; 2.7 kPa) at 40° C. After recrystallization of the residue in acetonitrile (75 cc), 1-(2-methoxyphenyl)-3-[4-(4-methylbenzyl)-1-piperazinyl]-7H-pyrrolo[1,2-a]azepin-7-one (1.8 g), m.p. 186° C., is obtained.

Provenance & Evidence