77930-46-2

Usage

Chemical class

Polycyclic aromatic hydrocarbon (PAH)

Molecular weight

324.46 g/mol

Environmental persistence

Highly persistent in air, water, and soil

Source

Incomplete combustion of organic matter

Health hazards

Carcinogenic and mutagenic properties, linked to cancer, respiratory problems, and reproductive disorders

Importance

Monitoring and regulating emissions to minimize exposure and potential health risks

Upstream product

• 77930-34-8 7,10-Diethyl-9-p-tolyl-fluoranthene-8-carboxylic acid ethyl ester 

Relevant academic research and scientific papers

Polycyclic Aromatic Compounds: Part II - A New Synthesis of Fluorenone & Fluorene Derivatives

A large number of 1,4-disubstituted-2,3-(1',8'-naphthylene)-fluorenones (VI) and -fluorenes (V), i. e. 7,13-disubstituted-8(H)-oxo- and 8H-indenofluoranthenes have been prepared.The preferred method of the synthesis is the Diels-Alder reaction of 2,5-disubstituted-3,4-(1',8'-naphthylene)cyclopentadienones (I) with phenylpropiolic esters (II) to give fluoranthene derivatives (IV).The latter, on cyclisation and reduction yield the desired fluorenes.Phenylpropiolic acids (VII) are also added to I to give fluoranthenes (VIII) and fluoranthene-8-carboxylic acids (IX).The acids (IX) undergo smooth cyclisation to fluorenones (VI) on treatment with conc. sulphuric acid.