Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

D—7r conjugation

Structures, Reactions and Functions of d-d and d-7r Conjugated Systems Editors A. Nakamura, N. Ueyama, and K. Yamaguchi [Pg.519]

Diphenylketene (253) reacts with allyl carbonate or acetate to give the a-allylated ester 255 at 0 °C in DMF. The reaction proceeds via the intermediate 254 formed by the insertion of the C = C bond of the ketene into 7r-allylpalla-dium, followed by reductive elimination. Depending on the reaction conditions, the decarbonylation and elimination of d-hydrogen take place in benzene at 25 °C to afford the conjugated diene 256(155], [Pg.169]

See other pages where D—7r conjugation is mentioned: [Pg.137]    [Pg.150]    [Pg.339]    [Pg.340]    [Pg.347]    [Pg.274]    [Pg.623]    [Pg.670]    [Pg.295]    [Pg.102]    [Pg.371]    [Pg.612]    [Pg.293]    [Pg.1]    [Pg.210]    [Pg.213]    [Pg.192]    [Pg.515]    [Pg.342]    [Pg.347]    [Pg.231]    [Pg.86]    [Pg.89]    [Pg.5]    [Pg.40]    [Pg.515]    [Pg.71]    [Pg.5423]    [Pg.153]    [Pg.68]    [Pg.361]    [Pg.2]    [Pg.523]    [Pg.126]    [Pg.131]    [Pg.45]    [Pg.214]    [Pg.325]    [Pg.597]    [Pg.4]    [Pg.13]    [Pg.14]    [Pg.640]    [Pg.468]    [Pg.22]    [Pg.2]    [Pg.1322]   
See also in sourсe #XX -- [ Pg.4 ]



SEARCH



© 2019 chempedia.info