74809-79-3

Upstream product

• 74809-75-9 6-Ethyl-1,2,3-trimethoxy-5-methyl-5,6-dihydro-phenanthro[2,3-d][1,3]dioxole-5,6-diol 
• 39500-17-9 6,7-methylenedioxy-2',3',4'-trimethoxyphenanthrene 
• 74825-08-4 4-Bromo-1,2,3-trimethoxy-phenanthro[2,3-d][1,3]dioxole 
• 74809-58-8 4-Bromo-1,2,3-trimethoxy-phenanthro[2,3-d][1,3]dioxole-5,6-dione 
• 74809-64-6 C₂₃H₂₃BrO₈ 
• 74809-71-5 2,3,4-trimethoxy-6,7-(methylenedioxy)-9,10-dihydro-10-methyl-10-hydroxy-9-oxophenanthrene 

Relevant academic research and scientific papers

Sythesis of 2,2'-Diacyl-1,1'-biaryls. Regiocontrolled Protection of Ketones in Unsymmetrically Substituted 9,10-Phenanthrenequinones

A regiocontrolled monoketalization of unsymmetrically substituted phenanthrenequinones by use of 2,2-dimethyl-1,3-propanediol as the ketalizing reagent has been effected with the help of bromo substitution in one of the aromatic rings at the C-1 or C-8 po