YADAGIRI, BATHINI;LOWN, J. WILLIAM, SYNTH. COMMUN., 20,(1990) N, C. 175-181
作者:YADAGIRI, BATHINI、LOWN, J. WILLIAM
DOI:——
日期:——
Direct Synthesis of Fluorescent Oxazolo-phenoxazines by Copper-Catalyzed/Hypervalent Iodine(III)-Mediated Dimerization/Cyclization of 2-Benzylamino-phenols
作者:Camilla Loro、Letizia Molteni、Marta Papis、Egle M. Beccalli、Donatella Nava、Leonardo Lo Presti、Stefano Brenna、Gioele Colombo、Francesca Foschi、Gianluigi Broggini
DOI:10.1021/acs.joc.1c02329
日期:2022.1.21
A dimerization/cyclization reaction of 2-benzylamino-phenols for the direct synthesis of the oxazolo-phenoxazine skeleton is reported. The reaction occurs under copper catalysis in the presence of hypervalent iodine(III), giving selectively the 5H-oxazolo[4,5-b]phenoxazine compounds. The cascade process, which allows the conversion of the substrates into the tetracyclic products, involves three C–H