Dibenzazepinium salts

The dibenzazepinium salts 81 were prepared in moderate overall yields from the diol 77, via 78, the i ntermediate dibenzoxepine 7 9, a nd the bromo a ldehyde 8 0. New catalysts for catalytic asymmetric epoxidation, for example 82 and 83, were made in this way [02SL580]. 

In 2002, Bulman Page etal. reported the dibenzazepinium salt analogs of catalysts 64e and 641,65 and 66, respectively. These were examined in the asymmetric epoxidation reactions of phenylcyclohexene, phenyldihydronaphthalene, and indene, with very similar results being observed with 65 and 66 as with 64e and 641 (Figure 15) <2002SL580>. 

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See also in sourсe #XX -- [ ]

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