107828-86-4

Upstream product

• 42103-98-0 diethyl isopropylidenesuccinate 
• 4038-13-5 2,5-dimethoxybenzophenone 
• 98-88-4 benzoyl chloride 
• 150-78-7 1,4-dimethoxybezene 

Downstream Products

• 107828-83-1 4,6-Dimethoxy-9,9-dimethyl-4-phenyl-4,9-dihydro-naphtho[2,3-c]furan-1,3-dione 
• 107828-84-2 4-Hydroxy-5,8-dimethoxy-9,9-dimethyl-4-phenyl-4,9-dihydro-naphtho[2,3-c]furan-1,3-dione 

Relevant academic research and scientific papers

Photochromic Systems. Part 2. Studies on the Photoreactions and the Photopolychromic Properties of (E)-(2,5-Dimethoxyphenyl-substituted)methylene Isopropylidenesuccinic Anhydrides

Each of the pale yellow title compounds (1), in toluene and other appropriate organic solvents, cyclises on irradiation at 366 nm to give purple solutions containing a mixture of a termally unstable, blue 4-substituted 1,8a-dihydro-5,8-dimethoxy-1,1-dimet