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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 354749Generated: October 25, 2026

1-[6-bromo-5-(o-chlorophenyl)-2,3-dihydro-1,3,3-trimethyl-2-oxo-1H-1,4-benzodiazepin-7yl]-3-(2-hydroxyethyl)urea → 7-amino-6-bromo-5-(o-chlorophenyl)-1,3-dihydro-1,3,3-trimethyl-2H-1,4-benzodiazepin-2-one

https://huagongshe.com/reaction/354749

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-[6-bromo-5-(o-chlorophenyl)-2,3-dihydro-1,3,3-trimethyl-2-oxo-1H-1,4-benzodiazepin-7yl]-3-(2-hydroxyethyl)ureaHCID 20506137—
Reactant[6-bromo-5-(o-chlorophenyl)-2,3-dihydro-1,3,3-trimethyl-2-oxo-1H-1,4-benzodiazepin-7-yl]isocyanateHCID 20506177—
SolventAcetone diethyletherHCID 21584533—
Product7-amino-6-bromo-5-(o-chlorophenyl)-1,3-dihydro-1,3,3-trimethyl-2H-1,4-benzodiazepin-2-oneHCID 20506136—

Reaction Steps

From 4.5 g (0.011 mol) of 7-amino-6-bromo-5-(o-chlorophenyl)-1,3-dihydro-1,3,3-trimethyl-2H-1,4-benzodiazepin-2-one there is obtained, in analogy to the details in Example 4, via [6-bromo-5-(o-chlorophenyl)-2,3-dihydro-1,3,3-trimethyl-2-oxo-1H-1,4-benzodiazepin-7-yl]isocyanate, 1-[6-bromo-5-(o-chlorophenyl)-2,3-dihydro-1,3,3-trimethyl-2-oxo-1H-1,4-benzodiazepin-7yl]-3-(2-hydroxyethyl)urea of melting point 214°-218° (acetone/ether).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04377522
Source datasetuspto-grants-1983_03
ORD IDord-79364905c46f4d39a9391a8f70bc829a
Source noteuspto-grants-1983_03