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Naphtho[1,2-c;5,6-c]difuran, a stable isobenzofuran derivative

✍ Scribed by Daniel W. Yu; Kathryn E. Preuss; Paulette R. cassis; T. Dontem Dejikhangsar; Peter W. Dibble

Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
205 KB
Volume
37
Category
Article
ISSN
0040-4039

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✦ Synopsis

The title compound, an interesting analog of isobenzofuran, was prepared in nine steps from 2,6-dimethylnaphthalene in an overall yield of 12%.

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The synthesis of novel polycyclic hetero
The synthesis of novel polycyclic heterocyclic ring systems via photocyclization. 21. Naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f]-quinoline, naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f][1,2,4]-triazolo[4,3-a]quinoline and naphtho[2′,1′:4,5]thieno[2,3-c]naphtho[1,2-f]-tetrazolo[1,5-a]quinoline
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## Abstract Photocyclization of 3‐chloro‐__N__‐(3‐phenanthryl)naphtho[1,2‐__b__]thiophene‐2‐carboxamide (**12**) furnished only one of the two possible isomers, __i.e.__, naphtho[2′,1′:4,5]thieno[2,3‐__c__]naphtho[1,2‐__f__]quinolin‐6(5__H__)‐one (**13**), which was further elaborated to yield the

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