The (4+ 2) cycloaddition of ketenes and. beta.-methoxy. alpha.,. beta.-unsaturated ketones: 2-pyranones

WT Brady, MO Agho

Index: Brady, William T.; Agho, Michael O. Journal of Organic Chemistry, 1983 , vol. 48, # 26 p. 5337 - 5341

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Citation Number: 22

Abstract

Extensive studies in ketene chemistry indicate the reaction bias of ketenes with 4-a-electron compounds toward (2+ 2) cycloaddition reactions of these heterocumulenes to yield four- membered-ring compounds.'While the primary synthetic usefulness of the reactions of ketenes remains the formation of four-membered-ring compounds, there are an increasing number of reports in the literature that deal with the (4+ 2) cycloaddition reactions of ...