Synfacts, Table of Contents Synfacts 2025; 21(08): 833DOI: 10.1055/a-2639-2758 Organo- and Biocatalysis Enantioselective Construction of Polycycles via Type II Intramolecular [5+2] CycloadditionsContributor(s): Benjamin List , Michiel J. van WellRecommend Article Abstract Buy ArticleKeywords Keywordsoxidopyrylium ylides - anti-Bredt double bond - asymmetric [5+2] cycloaddition - chiral phosphoric acid Full Text