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

✍ Scribed by Takashi Ooi; Akira Saito; Keiji Maruoka

Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 204 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)00575-9

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✦ Synopsis

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.

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