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

HRID 1287216Notes

Reaction equation

[CH2:1](Br)[CH2:2][CH2:3][CH3:4].CC[O-].[Na+].[C:10]1([N:16]2[C:22]3[CH:23]=[C:24]([Cl:27])[CH:25]=[CH:26][C:21]=3[NH:20][C:19](=[O:28])[CH2:18][C:17]2=[O:29])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1>>[C:10]1([N:16]2[C:22]3[CH:23]=[C:24]([Cl:27])[CH:25]=[CH:26][C:21]=3[N:20]([CH2:1][CH2:2][CH2:3][CH3:4])[C:19](=[O:28])[CH2:18][C:17]2=[O:29])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1

Participants

Reactant 3

HCID 8002Butyl bromide

HCID 89657Desmethylclobazam

HCID 2723922Sodium ethoxide

Product 1

HCID 214876911-phenyl 5-butyl 8-chloro 1,2,4,5-tetrahydro 2,4-dioxo-3H-1,5-benzodiazepine

Procedure

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.

Sources & evidence

ORD record: ord-7cfbe99e2b384bbfb9f8907a755e68aa
Source dataset: uspto-grants-1976_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US03984398

Reaction notes

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