Ag(i)-Catalyzed cycloisomerization reactions: synthesis of substituted phenanthrenes and naphthothiophenes?
Organic & Biomolecular Chemistry Pub Date: 2017-07-24 DOI: 10.1039/C7OB01646H
Abstract
This paper describes silver catalyzed synthesis of substituted phenanthrenes and naphthothiophenes from ortho-alkylated biaryl derivatives via 6-endo-dig intramolecular alkyne–arene coupling. The mechanistic study reveals that 6-endo-dig cyclization proceeds through initial π-coordination of the alkyne unit followed by a Friedel–Crafts-type electrophilic aromatic cyclization at the adjacent arene ring. X-ray crystallographic studies further supported the formation of carbocycles.
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Journal Name：Organic & Biomolecular Chemistry
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CAS no.: 89640-58-4
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