Dimethylformamide → HCID 21955784, compound

Participants

Reaction Steps

In the manner given in Example 25, to 6,7-diethyl-2,9-dihydro-9-(pyrrolidinoacetyl)-3H-pyrido[3,2-c]-s-triazolo[4,3-a][1,5]benzodiazepin-3-one in dimethylformamide is added a solution of sodium hydride in mineral oil. The mixture is allowed to react at about 95° C. for 40 minutes and after cooling (3-pyrrolidinopropyl)chloride in xylene is added. The mixture is kept at 95°-100° C. for a period of 22 hours, evaporated and worked up as in example 25 to give 6,7-diethyl-2,9-dihydro-2-(3-pyrrolidinopropyl)-9-(pyrrolidinoacetyl)-3H-pyrido[3,2-c]-s-triazolo[4,3-a]]1,5]benzodiazepin-3-one.

Provenance & Evidence