Access to Unsymmetric Binaphthols through Oxidative Coupling of Silicon Bisnaphtholates
نویسندگان
چکیده
Z. Naturforsch. 58b, 211 – 216 (2003); received Oktober 4, 2002 The oxidative coupling of various symmetric (5 7) as well as unsymmetric silicon bisnaphtholates (11, 12), initiated by different oxidants (iron(III), cerium(IV), copper(II) or hypervalent iodine), furnishes the corresponding symmetric and unsymmetric binaphthols 13 17. The coupling reaction of the substrates follows strictly an intramolecular pathway.
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