Big Chemical Encyclopedia

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

Articles Figures Tables About

Brook-type silenes cycloadditions

The reactions with quadricyclane, shown in Eq. (31), gave products identical to those formed by the same silene reacting in a [2 + 2] manner with norbornene. Mixtures of exo endo isomers were frequently observed. Again, only silenes of the Auner type have been studied with this reagent,51-53,185,188 so it is not known whether the Wiberg- or Brook-type silenes will undergo this mode of cycloaddition. [Pg.120]

Brook -type silenes have been found to undergo [4+2] and [2+2] cycloadditions with imines R2C=NR to give silatetrahydroisoquinolines or silaazetidines, respectively248. If formed, the [4 + 2] adducts generally rearrange slowly in the dark or more rapidly when photolysed to the thermodynamically more stable [2 + 2] isomers. [Pg.968]

See other pages where Brook-type silenes cycloadditions is mentioned: [Pg.119]    [Pg.122]    [Pg.128]    [Pg.949]    [Pg.953]    [Pg.953]    [Pg.957]    [Pg.964]    [Pg.966]    [Pg.949]    [Pg.953]    [Pg.953]    [Pg.957]    [Pg.964]    [Pg.966]   
See also in sourсe #XX -- [ Pg.949 , Pg.950 , Pg.951 , Pg.952 , Pg.953 , Pg.954 , Pg.955 ]

See also in sourсe #XX -- [ Pg.949 , Pg.950 , Pg.951 , Pg.952 , Pg.953 , Pg.954 , Pg.955 ]



SEARCH



Brook silenes

Brook-type silenes

Brooks

Silenes

Silenes cycloaddition

Silenes cycloadditions

© 2024 chempedia.info