66802-07-1

Upstream product

• 148345-07-7 (Z)-3-(3,4-dimethoxybenzylidene)isobenzofuran-1(3H)-one 
• 85-44-9 phthalic anhydride 
• 93-40-3 (3,4-Dimethoxyphenyl)acetic acid 

Downstream Products

• 161363-68-4 3-(3,4-Dimethoxy-benzyl)-3-(2-mercapto-ethylsulfanyl)-3H-isobenzofuran-1-one 
• 161363-72-0 3-(2-Chloro-ethylsulfanyl)-3-(3,4-dimethoxy-benzyl)-3H-benzo[c]thiophen-1-one 
• 161363-69-5 2-[2-(3,4-Dimethoxy-benzyl)-[1,3]dithiolan-2-yl]-benzoic acid 

Relevant academic research and scientific papers

The synthesis of radermachol

Five different approaches to the preparation of 6,7-benzo-3,4-(1,4-dimethoxy-2,3-naphtho)-1,5-dioxosuberane (3), an intermediate needed for the synthesis of radermachol (1), the red pigment from the roots of Radermachera xylocarpa, are described. The synthesis of radermachol (1) has been accomplished from 1,4-naphthoquinone in 14 steps.