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Cycloheptatrienyl borane

Cycloheptatrienyl(dipropyl)borane 3a is a spectacular example for the importance of orbital interactions between the dipropylboryl group and the cyclic 7t-system. Compound 3a equilibrates readily with its valence tautomer 7-exo-dipropylborylnorcaradiene 3b (Eq. 3). Experimentally determined thermodynamic parameters for the equilibrium (AH = 2.4... [Pg.439]

CYCLOHEPTATRIENYL(DI- -PROPYL)BORANE EQUILIBRIUM WITH7-(DI- -PROPYLBORYL)NORCARADIENE... [Pg.61]

In cyclononatetraenyl(di-H-propyl)borane 22 the [1,3]-B shift is the fastest rearrangement, whereas in the irontricarbonyl complex of cycloheptatrienyl(di- -propyl)borane 38 the [1,7]-B shift is faster than the [ 1,3]-B migration. This observation corresponds to the modified least motion principle, which is recently... [Pg.71]

See other pages where Cycloheptatrienyl borane is mentioned: [Pg.38]    [Pg.58]    [Pg.439]    [Pg.439]    [Pg.440]    [Pg.110]    [Pg.439]    [Pg.439]    [Pg.440]    [Pg.286]    [Pg.62]    [Pg.55]   
See also in sourсe #XX -- [ Pg.439 ]

See also in sourсe #XX -- [ Pg.439 ]



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Cycloheptatrienyl

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