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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 354755Generated: November 1, 2026

2-Bromoethanol → 5-(o-chlorophenyl)-1,3-dihydro-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one

https://huagongshe.com/reaction/354755

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-BromoethanolHCID 10898—
Reactant5-(o-fluorophenyl)-1,3-dihydro-1,3,3-trimethyl-7-nitro-2H-1,4-benzodiazepin-2-oneHCID 20506156—
Reactant5-(o-chlorophenyl)-1,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-oneHCID 20506179—
SolventDiethylether hexaneHCID 21584099—
Product5-(o-chlorophenyl)-1,3-dihydro-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-oneHCID 20506168—

Reaction Steps

From 25 g (0.073 mol) of 5-(o-chlorophenyl)-1,3-dihydro-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one and 2-bromoethanol there is obtained, in analogy to the details in paragraph (c) of Example 1, with a reaction period of 7 days, 5-(o-chlorophenyl)-1,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-7-nitro-2H-1,4-benzodiazepin-2-one of melting point 124°-125° (ether/n-hexane).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04377522
Source datasetuspto-grants-1983_03
ORD IDord-56b4f6ef3aad4d25a99ff8b4709fbf1e
Source noteuspto-grants-1983_03