206071-84-3

Upstream product

• 113542-06-6 1-(2'-bromo-4',5'-dimethoxybenzyl)-6,7-dimethoxy-2-methylisoquinolinium iodide 
• 58-74-2 Papaverine 
• 139-76-4 N-(3,4-dimethoxyphenethyl)-2-(3,4-dimethoxyphenyl)acetamide 
• 51449-10-6 1-(2'-bromo-4',5'-dimethoxybenzyl)-6,7-dimethoxyisoquinoline 

Downstream Products

• 206071-88-7 2-(2'-bromo-4',5'-dimethoxyphenyl)-6,7-dimethoxy-1,4-dihydro-3-hydroxy-1,4-naphthalenedione 
• 206071-85-4 2-(2'-bromo-4',5'-dimethoxyphenyl)-6,7-dimethoxy-1,4-dihydro-1,4-naphthalenedione 

Relevant academic research and scientific papers

From phenylacetylphenylacetic acids and 1-benzylisoquinolines to 6,11-dihydrobenzo[b]naphtho[2,3-d]furan-6,11-diones, 6H-dibenzo[c,h]chroman-6-ones and 7,12-dihydro-5H-dibenzo[c,g]chroman-5,7,12-triones via 2-phenyl-3-hydroxy-1,4-dihydro-1,4-naphthalenediones or 2-phenyl-1-naphthols

We describe the synthesis of 6,11-dihydrobenzo[b]naphtho[2,3-d]furane-6,11-diones, 6H-Dibenzo[c,h]chroman-6-ones and 7,12-dihydro-5H-dibenzo[c,g]chroman-5,7,12-triones from 2-(2'-phenyl)-3-hydroxy-1,4-dihydro-1,4-naphthalenediones or 2-phenyl-1-naphthols obtained from 2-(2'-bromophenylacetyl)-phenylacetic acids or 1-benzylisoquinolines. (C) 2000 Elsevier Science Ltd.

New, simple total syntheses of benzo[b]naphtho[2,3-d]furan-6,11-diones and benzo[b]naphtho[2,1-d]furans

Here we account the transformation of 2-[(2'- bromophenyl)acetyl]phenylacetic acids and 1-benzylisoquinolines into benzo[b]naphtho[2,3-d]furan-6,11-diones. Synthesis of benzo[b]naphtho[2,1- d]furans from 1-benzylisoquinolines is also described.