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Synlett 1993; 1993(3): 197-198
DOI: 10.1055/s-1993-22399
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Regiocontrolled [2+2] Cycloaddition of Unsymmetrical Fumarates Based on the Discrimination of Two Different Ester Carbonyls with Methylaluminum Bis(2,6-di-tert-butyl-4-methylphenoxide) (MAD)

Keiji Maruoka* , Hiroshi Imoto, Susumu Saito, Hisashi Yamamoto
  • *Department of Applied Chemistry, Nagoya University, Chikusa, Nagoya 464-01, Japan
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Publication Date:
19 March 2002 (online)

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High regiochemical control has been achieved in the organoaluminum-promoted [2+2] cycloaddition reaction of unsymmetrical fumarates based on the discrimination of two different fumarate carbonyls by selective complexation with exceptionally bulky methylaluminum bis(2,6-di-tert-butyl-4-methylphenoxide).