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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1062138Generated: October 26, 2026

Trifluoroacetic acid → 8-Phenyl-4-thiophen-2-yl-1,3-dihydro-benzo[b][1,4]diazepin-2-one

https://huagongshe.com/reaction/1062138

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant2,2-Dimethyl-6-thiophen-2-yl-[1,3]dioxin-4-oneHCID 22224708—
ReactantN-(3-Amino[1,1'-biphenyl]-4-yl)-carbamic Acid tert-Butyl EsterHCID 57717454—
SolventDichloromethaneHCID 6344—
Product8-Phenyl-4-thiophen-2-yl-1,3-dihydro-benzo[b][1,4]diazepin-2-oneHCID 2222474559.5%

Reaction Steps

Prepared from (3-amino-biphenyl-4-yl)-carbamic acid tert.-butyl ester (Example G9) (69 mg, 0.243 mmol) and 2,2-dimethyl-6-thiophen-2-yl-[1,3]dioxin-4-one (Example J1) (54 mg, 0.257 mmol) 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 brown solid (46 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06960578B2
Source datasetuspto-grants-2005_11
ORD IDord-f014dd3f44cd4c0c8d10046077e598c2
Source noteuspto-grants-2005_11