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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1745671Generated: October 30, 2026

Trifluoroacetic acid → 8-(2-phenylethynyl)-4-(3-(trifluoromethyl)phenyl)-1H-benzo[b][1,4]diazepin-2(3H)-one

https://huagongshe.com/reaction/1745671

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant(2-Amino-4-phenylethynyl-phenyl)-carbamic acid tert-butyl esterHCID 11404065—
Reactant2,2-Dimethyl-6-(3-trifluoromethoxy-phenyl)-[1,3]dioxin-4-oneHCID 22224728—
SolventDichloromethaneHCID 6344—
Product8-(2-phenylethynyl)-4-(3-(trifluoromethyl)phenyl)-1H-benzo[b][1,4]diazepin-2(3H)-oneHCID 22224583—

Reaction Steps

Prepared from (2-amino-4-phenylethynyl-phenyl)-carbamic acid tert.-butyl ester (Example G2) and 2,2-dimethyl-6-(3-trifluoromethoxy-phenyl)-[1,3]dioxin-4-one (Example J8) 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 yellow solid (157 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07018998B2
Source datasetuspto-grants-2006_03
ORD IDord-78f21b9bd89148b289fceaf081cbd5d6
Source noteuspto-grants-2006_03