Organic letters

Ytterbium Triflate Catalyzed Synthesis of Alkoxy-Substituted Donor− Acceptor Cyclobutanes and Their Formal [4+ 2] Cycloaddition with Imines: Stereoselective …

MMAR Moustafa, BL Pagenkopf

Index: Moustafa, Mahmoud M. Abd Rabo; Pagenkopf, Brian L. Organic Letters, 2010 , vol. 12, # 14 p. 3168 - 3171

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Citation Number: 45

Abstract

A new synthesis of 2-alkoxy-1, 1-cyclobutane diesters and their first use in dipolar cycloadditions is reported. Both the formation of the donor− acceptor cyclobutanes and their subsequent annulation with in situ formed imines are catalyzed by Yb (OTf) 3. Cyclobutanes

~10%

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