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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1635416Generated: November 3, 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/1635416

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 numberUS06509328B1
Source datasetuspto-grants-2003_01
ORD IDord-80c0650e7cc54896803aad92edc90b63
Source noteuspto-grants-2003_01