Synthesis of 2H-naphtho[2,3-b]thiopyranoquinones and density functional study for the Diels-Alder reaction of a benzothiopyranoquinone
Loading...
Date
2000
Journal Title
Journal ISSN
Volume Title
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
The synthesis of benzothiopyranoquinone (6) in three step from benzothiopyran (3) is described. Diels-Alder reaction of quinone (6) with 1,3-pentadiene (7), cyclopentadiene, 1-methoxy-1,3-cyclohexadiene (11) and 1-dimethylamino-1-aza-1,3-pentadiene (14) was studied. The Density Functional Theory was applied to explain the orientation of the cycloaddition reaction of quinone (6) with dienes (7), (11) and (14).
Description
Keywords
MAXIMUM HARDNESS, SULFUR ANALOGS, PRINCIPLE, NAPHTHO<2,3-B>PYRANOQUINONES, REGIOSELECTIVITY, NAPHTHOQUINONES, INTERMEDIATE