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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1745729Generated: 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/1745729

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 numberUS07018998B2
Source datasetuspto-grants-2006_03
ORD IDord-b18fdf84f1324fb6affd63d4366ea931
Source noteuspto-grants-2006_03