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Oxygen, Beckmann rearrangement-addition

Phosgene reacts with oximes to form 0-(ch oroformyl) oximes 124, which, on addition of antimony pentachloride, undergo smooth Beckmann rearrangement with loss of carbon dioxide to give the nitrilium salts 125 almost quantitatively [66]. With oxygen or nitrogen nucleophiles, O-(chloroformyl) oximes 124 form symmetrical and unsymmetrical oxalyl derivatives. [Pg.71]

See other pages where Oxygen, Beckmann rearrangement-addition is mentioned: [Pg.252] [Pg.252] [Pg.195] [Pg.368] [Pg.314] [Pg.191] [Pg.199] [Pg.627]

See also in sourсe #XX -- [ Pg.453 , Pg.454 , Pg.455 , Pg.456 ]

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Addition oxygen

Beckmann rearrangements addition

Beckmann rearrangment

Oxygenate additive