83269-91-4

Upstream product

• 1139-82-8 5,7-dihydro-dibenzo[a,c]cyclohepten-6-one 
• 591-51-5 phenyllithium 
• 83269-93-6 1-amino-3,4:5,6-dibenzocycloheptatriene-2-carboxylic acid 
• 38274-14-5 2,2'-bis-(bromomethyl)-1,1'-biphenyl 
• 3594-90-9 2,2'-bis(hydroxymethyl)biphenyl 
• 6672-73-7 1-amino-2-cyano-3,4:5,6-dibenzocycloheptatriene 
• 863305-32-2 diphenic acid 
• 83269-94-7 6-phenyl-6,7-dihydro-5H-dibenzocyclohepten-6-ol 

Relevant academic research and scientific papers

Excited state carbon acid dissociation and competing photoarrangements of 5H-dibenzo[a,c]cycloheptene derivatives

Structure reactivity studies of excited singlet state carbon acid dissociation and competing formal di-π-methane rearrangement have been carried out to gain more insights on the photochemistry displayed by these compounds. Photolysis in the presence of ethanolamine resulted in stereoselective deprotonation of the pseudo-axial proton. The results show that excited state carbon acid dissociation is a general reaction of dibenzo and dinaphtho cycloheptenes only if photochemical pathways are not competing.