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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1635350Generated: November 2, 2026

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

https://huagongshe.com/reaction/1635350

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant(2-Amino-4-phenylethynyl-phenyl)-carbamic acid tert-butyl esterHCID 11404065—
Reactant6-(3-Chloro-phenyl)-2,2-dimethyl-[1,3]dioxin-4-oneHCID 22224690—
SolventDichloromethaneHCID 6344—
Product(E)-4-(3-chlorophenyl)-8-(2-phenylethynyl)-1H-benzo[b][1,4]diazepin-2(3H)-oneHCID 9864190—

Reaction Steps

Prepared from (2-amino-4-phenylethynyl-phenyl)-carbamic acid tert.-butyl ester (Example G2) and 6-(3-chloro-phenyl)-2,2-dimethyl-[1,3]dioxin-4-one (Example J6) 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 an orange solid (155 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06509328B1
Source datasetuspto-grants-2003_01
ORD IDord-41ec6dac33ec4ae0b57643f688d140d6
Source noteuspto-grants-2003_01