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The hetero-Diels-Alder reaction is one of the most powerful transformations in the chemistry toolbox for the synthesis of heterocycles. In this article, the recent developments of this reaction are presented involving heterodienophiles such as imines, azenes, carbonyls, thiocarbonyls, and nitroso compounds as well as heterobutadienes such as azabutadienes, diaazabutadienes, oxabutadienes, thiabutadienes, nitrosoalkenes, and nitroalkenes.
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Blond et al. (2016) studied this question.
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