93680-98-9

Upstream product

• 93680-99-0 6-isopropoxy-2,4-dimethoxy-3-methylbenzyl chloride 
• 93680-97-8 4-isopropoxy-2,6-dimethoxytoluene 
• 500-99-2 3,5-dimethoxyphenol 
• 93681-01-7 6-isopropoxy-2,4-dimethoxy-3-methylphenylacetonitrile 
• 22080-96-2 syringaldehyde 
• 22080-97-3 3,5-dimethoxy-4-methylphenol 

Downstream Products

• 93681-03-9 3-bromo-2-hydroxy-2,4-dimethoxy-5-methylphenylacetic acid 
• 93681-02-8 (3-Bromo-2-isopropoxy-4,6-dimethoxy-5-methyl-phenyl)-acetic acid 

Relevant academic research and scientific papers

Naturally Occurring Dibenzofurans. Part 4. Synthesis of Dibenzofurandiols by Annelation of Benzofurans

Methyl 3-acetylbenzofuran-2-ylacetate (8) undergoes C-methylation affording methyl 2-(3-acetylbenzofuran-2-yl)propionate (13).These compounds and similar oxo esters undergo ready cyclization to dibenzofurandiols on treatment with sodium methoxide in boiling methanol.A convenient synthesis of dimethyl furan-2,5-diylacetate (30) is described, as are attempts to synthesize 1,3,7,9-tetramethoxy-2,8-dimethyldibenzofuran (3).