Light induced cycloadditions of captodative alkenes
نویسندگان
چکیده
منابع مشابه
Theory of Cycloadditions of Excited Aromatics to Alkenes
A qualitative molecular orbital rationalization of the selectivities in ortho, meta, and cycloadditions of singlet excited states of substituted benzenes to alkenes, and of triplet state di—ir—methane rearrangements of substituted benzonorbornadienes is presented. As the name suggests, excited states of benzene and substituted benzenes are prone to aroused reactivity tendencies, rearranging to ...
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A method for the [2 + 2] cycloaddition of aryl ketenes and alkenes is presented. The process involves the in situ generation of a ketene in the presence of a Lewis acid. The utility of products is demonstrated towards the synthesis of a common scaffold found in several natural product families.
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Synthetic methods relying on gold complexes as catalysts have recently been the focus of intense development.1 Despite numerous advances, relatively few enantioselective gold-catalyzed transformations have been described. The earliest example of an enantioselective gold(I)-catalyzed transformation, the Hayashi-Ito aldol reaction, was proposed to rely on activation of the nucleophile as a chiral...
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ژورنال
عنوان ژورنال: Journal of Chemical Sciences
سال: 1993
ISSN: 0253-4134,0973-7103
DOI: 10.1007/bf03040830