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Cage-Shaped Borate Esters

The increased Lewis acidity of (165) was tested in the hetero Diels-Alder reaction of Danishefsky s diene (168) with benzaldehyde to obtain the dihydropyranone [Pg.234]

Yasuda and Baba recently reported a cage-shaped borate ester (165) and its tetrahydrofuran (THE) adduct, (166) (Figure 5.10) [100]. Compound (165) is more Lewis acidic compared to the planar triphenoxy borate ester (167). [Pg.234]

Fig. 5.11 Dihedral angles in planar borate ester and cage shaped (85)... Fig. 5.11 Dihedral angles in planar borate ester and cage shaped (85)...
See other pages where Cage-Shaped Borate Esters is mentioned: [Pg.402]    [Pg.234]    [Pg.234]    [Pg.235]    [Pg.402]    [Pg.234]    [Pg.234]    [Pg.235]   


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Borate esters

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