Copper acetate-Anthracene

The procedure described is a modification of that of Dimroth.8 9-Nitroanthracene has also been prepared by nitration of anthracene with copper nitrate in glacial acetic acid and with diacetyl-orthonitric acid.4 Other methods include direct nitration in acetic acid solution with nitric acid and acetic anhydride.6... 

Safety Commission Consumer Products Copper (Cu) Corrosives Corticosteroids Cosmetics and Personal Care Products Cotinine Coumarins Creosote Cresols Cromolyn Cumene Cumulative Risk Assessment Cyanamide Cyanide Cyanogen Chloride Cyclodienes Cyclohexamide Cyclohexane Cyclohexene Cyclophosphamide Cyclosporine Cyfluthrin Cypermethrin Cysteine Cytochrome P-450 "2,4-D (2,4-Dichlorophenoxy Acetic Acid)" Limonene Dalapon DDT/DDE/DDD Decane DEBT (Diethyltoluamide) DEE Deferoxamine DEHP (Di-Ethyl Hexyl Phthalate) Delaney Clause Deltamethrin Deodorants Detergent Developmental Toxicology Dextromethorphan Diazepam Diazinon Diazoxide Dibenzofuran " Dib enz [a, h] anthracene" Dibromochloropropane Dibutyl phthalate Dicamba Dichlone Dichlorobenzene Dichloroethanes "Dichloroethylene, 1,1-"... 

In general, cycloproparenes are thermally labile compounds, and they tend to decompose slowly at or above room temperature. When benzocyclopropene was heated to 100°C in a sealed tube, 9,10-dihydrophenanthrene was formed in 40% yield.The same product formed upon exposure of benzocyclopropene to copper(II) acetate (40%). In the presence of aluminum trichloride, however, benzocyclopropene dimerized to 9,10-dihydroanthracene and anthracene in 25% combined yield.Dihydroanthracene (45%) was also formed with silver(I) tetrafluoro-borate. Cyclopropa[A]naphthalene dimerized at 20°C in the presence of 1,3-diphenylisoben-zofuran or in its absence to give the linear 6,13-dihydropentacene (1) in ca. 85% yield.The angular isomer was not formed. The fact that 1,3-diphenylisobenzofuran did not react with cyclopropa[6]naphthalcne suggests that the dimerization does not proceed via biradicals. On the other hand, biradicals have been trapped with buta-1,3-diene under the conditions of the thermal dimerization of benzocyclopropene (80"C). ... 

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