Brønsted acid-catalyzed aromatic annulation of alkoxyallenes with naphthols: a reaction sequence to larger π-conjugated naphthopyrans with aggregation-induced emission characters. Issue 4 (14th November 2018)

• Record Type: Journal Article
• Authors: Zhang, Jinlong; Zhu, Lu; Shen, Kang; Yang, Huameng; Hang, Xiao-Chun; Jiang, Gaoxi
• Is Part Of: Chemical science. Volume 10:Issue 4(2019)
• Page Start: 1070
• Page End: 1074
• Publication Date: 2018-11-14
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8sc03837f
• Languages: English
• ISSNs: 2041-6520

Abstract

Abstract : A practical and readily scalable reaction sequence was developed for the straightforward synthesis of a new family of larger π-conjugated naphthopyrans by a Brønsted acid-catalyzed aromatic annulation of alkoxyallenes with inert naphthols. Abstract : A practical and readily scalable reaction sequence was developed for the straightforward synthesis of a new family of larger π-conjugated naphthopyrans by a Brønsted acid-catalyzed aromatic annulation of alkoxyallenes with inert naphthols. The cascade pathway involves allylation/cyclization/debenzyloxylation/isomerization/dehydration. The new class of solid state diphenylmethylene substituted naphthopyrans are fluorescent emissive and proved to have aggregation-induced emission (AIE) behavior.