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Multicomponent reactions are suitable tools to efficiently generate chemically diverse sets of heterocycles with sufficient structural complexity. Especially isocyanides have proven to be particularly versatile building blocks in these one\u2010pot processes. Due to their electronic structure, isocyanides are able to act sequentially or simultaneously as a nucleophile and an electrophile. Traditionally, isocyanides are therefore frequently used in multicomponent chemistry. In the recent literature, numerous reactions have been reported that involve formal cycloadditions of isocyanides with conjugated heterodienes. This Focus Review aims at mapping this reactivity and at providing insight into the relationship between the various reported reaction partners and the observed reactivity modes.<\/jats:p>","DOI":"10.1002\/asia.201403207","type":"journal-article","created":{"date-parts":[[2014,12,15]],"date-time":"2014-12-15T07:02:01Z","timestamp":1418626921000},"page":"508-520","source":"Crossref","is-referenced-by-count":60,"title":["Synthesis of Heterocycles by Formal Cycloadditions of Isocyanides"],"prefix":"10.1002","volume":"10","author":[{"given":"Art","family":"Kruithof","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eelco","family":"Ruijter","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Romano V. 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