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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1062196Generated: November 1, 2026

Trifluoroacetic acid → 8-(4-Fluoro-phenylethynyl)-4-(3-tetrazol-1-yl-phenyl)-1,3-dihydro-benzo[b][1,4]diazepin-2-one

https://huagongshe.com/reaction/1062196

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant[2-Amino-4-(4-fluoro-phenylethynyl)-phenyl]-carbamic acid tert-butyl esterHCID 69486641—
Reactant3-Oxo-3-(3-tetrazol-1-yl-phenyl)-propionic acid ethyl esterHCID 69592791—
SolventDichloromethaneHCID 6344—
Product8-(4-Fluoro-phenylethynyl)-4-(3-tetrazol-1-yl-phenyl)-1,3-dihydro-benzo[b][1,4]diazepin-2-oneHCID 9845127—

Reaction Steps

Prepared from [2-amino-4-(4-fluoro-phenylethynyl)-phenyl]-carbamic acid tert.-butyl ester (Example G33) and 3-oxo-3-(3-tetrazol-1-yl-phenyl)-propionic acid ethyl ester (Example H15) according to the general procedure K. The obtained material was deprotected and cyclized by treatment with TFA in CH2Cl2 according to the general procedure M. Obtained as a beige powder (5.5 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06960578B2
Source datasetuspto-grants-2005_11
ORD IDord-804a595b74fa43459986082df1e5386f
Source noteuspto-grants-2005_11