20396-46-7

Upstream product

• 563-79-1 2,3-Dimethyl-2-butene 
• 501-65-5 diphenyl acetylene 
• 103-30-0 (E)-1,2-diphenyl-ethene 
• 125611-58-7 2,2,3,3-tetramethyl-1,4-diphenyl-5,6-dithiabicyclo<2.1.1>hexane 
• 16141-46-1 trans-1,2-diphenyl-3,3,4,4-tetramethylcyclobutane 

Downstream Products

• 26107-30-2 1,4-diphenyl-2,2,3,3-tetramethyl-5-oxabicyclo<2.1.0>pentane 
• 108794-66-7 9,10-(3',3',4',4'-tetramethylcyclobuteno)phenanthrene 
• 108794-67-8 3,4-diphenyl-2,5-dimethyl-5-methoxy-1,3-hexadiene 
• 102427-32-7 3,4-diphenyl-2,5-dimethyl-2,4-hexadiene 
• 100421-96-3 [1-(2-Hydroxy-phenyl)-2,2,3,3-tetramethyl-cyclopropyl]-phenyl-methanone 
• 87894-16-4 (1R,4S)-5,5,6,6-Tetramethyl-1,4-diphenyl-2,3,7-trioxa-bicyclo[2.2.1]heptane 
• 34733-56-7 2,2,3,3-tetramethyl-1,4-diphenylbutane-1,4-dione 
• 93-97-0 benzoic acid anhydride 
• 134-81-6 benzil 

Relevant academic research and scientific papers

New reactions of furoxans: Formation of alkynes and cyclobutaphenanthrenes

Diarylfuroxans were found to give diarylacetylenes upon irradiation at 254 nm. Cyclobutaphenanthrenes were also obtained when reaction was carried out in the presence of alkenes. The acetylenic derivative is supposed to arise by loss of (NO)2 from a diazete-N,N-dioxide. Unimolecular and collision activated dissociation studies by tandem mass spectrometry also support the loss of (NO)2 from diarylfuroxans molecular ions.

Oxidation of 2,2,3,3-Tetramethyl-1,4-diphenyl-5,6-dithiabicyclohexane and Its Oxidation Products: An Important Role of 1,3-Transannular Interaction in the 1,3-Dithietane Part

Oxidation of 2,2,3,3-tetramethyl-1,4-diphenyl-5,6-dithiabicyclohexane with m-chloroperbenzoic acid gives two isomeric endo- (4a) and exo-sulfoxides (4b), three S,S'-dioxides (endo, exo-5a, exo, exo-5b, and endo, endo-5c), and an S,S,S'-tioxide (6).

PUTATIVE ELECTROCYCLIC REACTION OF CYCLOBUTENE RADICAL CATION; 1,2-DIPHENYL-3,3,4,4-TETRAMETHYLCYCLOBUTENE

The thermal and photochemical reactions of 1,2-diphenyl-3,3,4,4-tetramethylcyclobutene were investigated.Direct irradiation of this hydrocarbon leads to inefficient cyclization to a dehydrophenantrene.Irradiation in the presence of diethyl terephthalate g

THE SENSITIZED PHOTOOXYGENATION OF METHYL SUBSTITUTED 1,2-DIPHENYLCYCLOBUTENES

A series of Me substituted 1,2-diphenylcyclobutenes was subjected to dye-sensitized photooxidation in the presence of methylene blue.In the case of the 3,3-dimethyl-, 3,3,4-trimethyl- and 3,3,4,4-tetramethyl-1,2-diphenylcyclobutenes, the sensitized oxidations are accompanied by ring-contraction with concomitant ortho hydroxylation of one aromatic nucleus.When electron transfer induced photooxidation techniques utilizing 9,10-dicyanoanthracene (DCA) as a sensitizer are employed with the series of Me substituted diphenylcyclobutenes, the reactions take a markedly different course and a broad spectrum of oxidation products are obtained including, most notably, ozonides of the cyclobutenes.The mechanisms of these conversions are addressed and the significance of the results discussed.

THE ROLE OF CYCLIC PEROXIDES IN THE REACTIONS OF 1,2-DIPHENYLCYCLOPROPENES AND CYCLOBUTENES WITH SINGLET OXYGEN (1a,b,c,2)

An array of cyclic peroxy intermediates, including dioxetanes, endoperoxides and 1,2-dioxoles, are advanced as intermediates in the reactions of 1O2 with 1,2-diphenylcyclopropenes and cyclobutenes.