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2005
Carbodiimide derivatives
Q 0690
Catalytic Metathesis of Carbon Dioxide with Heterocumulenes Mediated by TitaIsopropoxide. — The insertion of an isopropoxide ligand of (II) into heterocu35- 106 nium
mulenes, e.g. (VI), gives a product which undergoes metathesis at elevated temperature
by insertion of a second heterocumulene followed by an extrusion reaction, cf. formation of (V). In the catalytic reaction carbodiimides, cf. (I), are mainly formed. The metathesis product of (I) with CO2 (II) is phenylisocyanate which is isolated as the inserted
product (V). — (GHOSH, R.; SAMUELSON*, A. G.; Chem. Commun. (Cambridge)
2005, 15, 2017-2019; Dep. Inorg. Phys. Chem., Indian Inst. Sci., Bangalore 560 012,
India; Eng.) — M. Paetzel
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