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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1745660Generated: November 3, 2026

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

https://huagongshe.com/reaction/1745660

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 numberUS07018998B2
Source datasetuspto-grants-2006_03
ORD IDord-b559d9c90d5b4c4a9b3a9ae67b3fc590
Source noteuspto-grants-2006_03