Tetrahedron letters

Dilithium 2, 2′-methylenebis (4, 6-di-tert-butylphenoxide) as a bidentate Lewis acid in organic synthesis

T Ooi, A Saito, K Maruoka

Index: Ooi, Takashi; Saito, Akira; Maruoka, Keiji Tetrahedron Letters, 1998 , vol. 39, # 22 p. 3745 - 3748

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Citation Number: 23

Abstract

Dilithium 2, 2′-methylenebis (4, 6-di-tert-butylphenoxide) can be successfully utilized as a bidentate Lewis acid for simultaneous coordination to carbonyl groups, thereby accelerating the Diels-Alder reactions. The double activation ability of the bidentate lithium reagent toward carbonyls is emphasized in comparison with the corresponding monodentate lithium reagent.