2955-22-8

Upstream product

• 859072-49-4 5-(3,4,5-trimethoxy-phenyl)-naphtho[2,3-d][1,3]dioxole-6,7-dicarboxylic acid 
• 108-31-6 maleic anhydride 
• 98449-73-1 (6-(1,3)-dithian-2-yl-benzo[d][1,3]dioxol-5-yl)(3,4,5-trimethoxyphenyl)methanol 
• 5926-51-2 bromomaleic anhydride 
• 82792-81-2 1-(3,4,5-trimethoxyphenyl)-5,6-methylenedioxy-1,3-dihydrobenzothiophene-2,2-dioxide 
• 120-57-0 piperonal 
• 6642-34-8 6-bromopiperonyl alcohol 
• 15930-53-7 6-bromo-3,4-methylenedioxybenzaldehyde 
• 82792-85-6 5,6-methylenedioxy-1-(3,4,5-trimethoxyphenyl)-1,3-dihydrobenzothiophene 
• 82792-83-4 -3,4-methylenedioxybenzyl alcohol 
• 86-81-7 3,4,5-trimethoxy-benzaldehyde 
• 98449-79-7 5′-methoxyretrochinensin 
• 858022-48-7 7-chloromethyl-8-(3,4,5-trimethoxy-phenyl)-naphtho[2,3-d][1,3]dioxole-6-carboxylic acid 

Downstream Products

• 42123-26-2 dimethyl 6,7-methylenedioxy-1-(3',4',5'-trimethoxyphenyl)naphthalene-2,3-dicarboxylate 
• 6258-41-9 5-(3,4,5-Trimethoxy-phenyl)-8H-furo[3',4':6,7]naphtho[2,3-d][1,3]dioxol-6-one 
• 98449-79-7 5′-methoxyretrochinensin 
• 98449-76-4 5-(3,4,5-Trimethoxy-phenyl)-naphtho[2,3-d][1,3]dioxole-6,7-dicarboxylic acid 7-methyl ester 

Relevant academic research and scientific papers

A NEW ROUTE TO 1-PHENYLNAPHTHALENES BY CYCLOADDITION: A SIMPLE AND SELECTIVE SYNTHESIS OF SOME NAPHTHALENE LIGNAN LACTONES

2-(2-Dithianyl)benzhydrols (2 a-c) undergo facile cycloaddition reaction with maleic anhydride under thermal conditions to give 1-phenyl-naphthalenes (7 a-c) in one step.The naphthalenes (7 a-c) have been converted into the naphthalene lignan lactones, (9 a-c) and (10 a-c).

The Synthesis of Lignans and Related Structures using Quinodimethanes and Isobenzofurans: Approaches to the Podophyllins

Novel routes to 1-aryl-5,6-dialkoxy-1,3-dihydrobenzothiophene 2,2-dioxides (13) and to the corresponding benzofuran (8) have been developed; these species yield quinodimethanes (12) via thermal extrusion of SO2 and isobenzofurans (5c) in an acid-cat