Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1287216Generated: October 31, 2026

Butyl bromide → 1-phenyl 5-butyl 8-chloro 1,2,4,5-tetrahydro 2,4-dioxo-3H-1,5-benzodiazepine

https://huagongshe.com/reaction/1287216

Reaction equation

Participants

RoleNameHCIDCharge
ReactantButyl bromideHCID 8002—
ReactantDesmethylclobazamHCID 89657—
ReactantSodium ethoxideHCID 2723922—
Product1-phenyl 5-butyl 8-chloro 1,2,4,5-tetrahydro 2,4-dioxo-3H-1,5-benzodiazepineHCID 21487691—

Reaction Steps

In the same manner, by acting butyl bromide in the presence of sodium ethylate, starting from 1-phenyl 8-chloro 1,2,4,5-tetrahydro 2,4 -dioxo 3H-1,5-benzodiazepine, there is obtained 1-phenyl 5-butyl 8-chloro 1,2,4,5-tetrahydro 2,4-dioxo-3H-1,5-benzodiazepine (R1 = H, R2 = Cl, R3 = C4H9, R4 = C6H5) melting at 159°- 161° C., upon recrystallisation in 50% ethanol.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03984398
Source datasetuspto-grants-1976_10
ORD IDord-7cfbe99e2b384bbfb9f8907a755e68aa
Source noteuspto-grants-1976_10