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Thermolysis phosphorus ylides

A number of benzo- or dibenzo-fused seven membered phosphorus heterocyclic systems have also been studied. These include the benzo-fused oxa-bridged phosphaalkene 76 prepared by thermolysis of 2,3-diphenylindenone 23-epoxide (as a source of the carbonyl ylide 1,3-dipole intermediate) in the presence of /-butylphosphaalkyne. This bridged phosphaalkene is unusually stable even without inert gas blanketing . Reaction of 76 with sulfur or grey selenium stereoselectively affords the thia- or selenaphosphiranes 77 (X = S, Se respectively). <00T6259>... [Pg.356]

See other pages where Thermolysis phosphorus ylides is mentioned: [Pg.733]    [Pg.41]    [Pg.45]    [Pg.69]    [Pg.62]    [Pg.733]    [Pg.733]    [Pg.733]    [Pg.188]    [Pg.26]    [Pg.26]    [Pg.26]    [Pg.561]    [Pg.196]    [Pg.25]    [Pg.268]    [Pg.270]    [Pg.170]    [Pg.26]    [Pg.196]    [Pg.348]    [Pg.458]   
See also in sourсe #XX -- [ Pg.260 ]

See also in sourсe #XX -- [ Pg.260 ]

See also in sourсe #XX -- [ Pg.98 , Pg.260 ]



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Phosphorus ylide

Phosphorus ylides

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