Formal [3+3] Cyclization Between 3‐Alkynyl‐3‐hydroxyisoindolinones and Substituted Phenols to 2 H ‐Chromene Based Spiro ‐isoindolinones
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DOI: 10.1002/ajoc.70260
Abstract: We herein reported a formal [3+3] cyclization reaction between 3‐alkynyl‐3‐hydroxyisoindolinones and substituted phenols, which offered an efficient procedure for the preparation of 2 H ‐chromene‐based spiro ‐isoindolinones. 10 mol% of inexpensive catalyst (Cu(ClO 4 )… read more here.
Keywords: substituted phenols; formal cyclization; hydroxyisoindolinones substituted; chromene based ... See more keywords