- Carbodiimide metathesis catalyzed by vanadium oxo and imido complexes via imido transfer
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Vanadium oxo and imido complexes: V(NC6H4Me)(OtBu)3 (1), V(NC6H4Me)Cl3 (2), V(O)(OtBu)3 (3), V(O)(OtPr)3 (4), V(O)(acac)2 (
- Birdwhistell,Lanza,Pasos
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p. 200 - 205
(2007/10/03)
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- Studies of Polymerisation and Metathesis Reactions, Part X. Polymerisation, Trimerisation and Metathesis of Allenes and Heteroallenes with Reduced Phillips Catalyst
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The reduced Phillips Catalyst - a surface chromium(II) on silica - catalyses the polymerisation of the allene 1,2-butadiene to yield predominantly 1,2-polybutadiene, yields trimerisation products with isocyanates, and gives metathesis of 2 differently sub
- Weiss, Karin,Hoffmann, Kurt
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p. 769 - 773
(2007/10/02)
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- Reactions of N1-Hydroxyformamidines with Heterocumulenes
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N1-Hydroxyformamidines and isocyanates react to yield N1-(carbamoyloxy)formamidines and/or 3-amino-1,2,4-oxazolidin-5-ones.Frequently the formation of ureas is observed.It can be explained by an oxidoreductive rearrangement to 1,3,5-trisubstituted biurets which undergo abstraction of isocyanate.Reactions with carbodiimides lead to 3-amino-5-imino-1,2,4-oxadiazolidines, ureas and carbodiimides not identical with the educts.
- Zinner, Gerwalt,Schecker, Heinz-Guenther,Heuer, Wilhelm
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p. 1006 - 1014
(2007/10/02)
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