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Di-rc-methane rearrangement

The photolysis of benzobarrelene. A, has been studied in considerable detail. Direct photolysis gives C, but when acetone is used as a photosensitizer, the di-rc-methane rearrangement product B is formed. [Pg.785]

The azo compounds A and B were prepared and the thermal and photochemical behavior of these materials was investigated. The results are summarized in the equations below. Discuss how these results m relate to the photochemical di-rc-methane rearrangement. (See Section 12.1.4 for some indications of the reactivity of... [Pg.787]

The di-rc-methane rearrangement is also a convenient way of obtaining polycyclic fused ring systems as illustrated in the synthesis of a tricyclo-undecane (3.17) 327). In the irradiation of dihydrotriquinacene the initial bonding scheme is identical as in (3.14) but ultimate cyclopropane formation is hindered by structural reasons (3.18) 328). [Pg.37]

It has been found that the di-rc-methane rearrangement can proceed through either a singlet or a triplet excited state.The reaction can be formulated as a concerted process,... [Pg.776]

One interesting example derived from the Di-rc-Methane rearrangement14 16). The overall mechanism of the rearrangement is depicted in Scheme 1. [Pg.50]

See other pages where Di-rc-methane rearrangement is mentioned: [Pg.274]    [Pg.169]    [Pg.179]    [Pg.195]    [Pg.318]    [Pg.318]    [Pg.342]    [Pg.1199]    [Pg.1199]    [Pg.274]    [Pg.169]    [Pg.179]    [Pg.195]    [Pg.318]    [Pg.318]    [Pg.342]    [Pg.1199]    [Pg.1199]    [Pg.110]    [Pg.96]    [Pg.105]    [Pg.45]    [Pg.342]    [Pg.428]    [Pg.982]   
See also in sourсe #XX -- [ Pg.1460 ]



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Methane Rearrangement

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