19576-01-3

Upstream product

• 100-42-5 styrene 
• 19584-41-9 carbene anthronylidene 

Downstream Products

• 76664-86-3 10-acetoxy-9-styrylanthracene 
• 76664-97-6 10-acetoxy-9-(2-acetoxy-2-phenylethyl)anthracene 
• 156666-38-5 10-methylene-9,10-dihydroanthryl-9-spirophenylcyclopropane 
• 81033-94-5 Acetic acid 10-(2-methoxy-2-phenyl-ethyl)-anthracen-9-yl ester 

Relevant academic research and scientific papers

Chemical and Physical Properties of Anthronylidene

Irradiation of diazoanthrone (DAAN) leads to loss of nitrogen and to formation of the carbene anthronylidene (AN).The triplet ground state of this carbene was detected at low temperature by ESR and optical spectrometric methods and at room temperature in fluid solution by laser flash photolysis.The rate constants for the reaction of 3AN with olefins, saturated hydrocarbons, and alcohols were determined spectrometrically.Combination of these kinetic measumerents with the results of chemical competition studies permits estimation of the energy gap separating the ground triplet state from the lowest singlet state of AN(ΔGST) to be 5.8 +/- 0.6 kcal/mol.This value is compared with that of other related carbenes and with the estimate obtained from MINDO/3 calculations for AN.