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Photochemical Transformations of Some 2‐(5‐Methylthiophen‐2‐yl)‐3‐[(naphthalen‐2‐yl)methoxy]‐4 H ‐chromen‐4‐ones Involving Type‐II Process
Author(s) -
Kamboj Ramesh C.,
Kumar Dinesh,
Sharma Geeta,
Arora Rita
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201190151
Subject(s) - chemistry , ring (chemistry) , photochemistry , irradiation , process (computing) , stereochemistry , combinatorial chemistry , medicinal chemistry , organic chemistry , physics , nuclear physics , computer science , operating system
Photo‐irradiation of 2‐(5‐methylthiophen‐2‐yl)‐3‐[(naphthalen‐2‐yl)methoxy]‐4 H ‐chromen‐4‐ones yielded the fascinating angular tetracyclic products via cyclization involving both 2‐thienyl ring and naphthylmethoxy group via 1,4‐biradical generated in the Norrish type‐II process. The stereochemical dispositions of the products were determined by MM2 energy minimized programme and spectroscopic analysis.