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Synlett 1995; 1995(6): 605-606
DOI: 10.1055/s-1995-5010
DOI: 10.1055/s-1995-5010
letter
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved.
This journal, including all individual contributions and illustrations published therein,
is legally protected by copyright for the duration of the copyright period. Any use,
exploitation or commercialization outside the narrow limits set by copyright legislation,
without the publisher's consent, is illegal and liable to criminal prosecution. This
applies in particular to photostat reproduction, copying, cyclostyling, mimeographing
or duplication of any kind, translating, preparation of microfilms, and electronic
data processing and storage.The Ligand Effect in Copper(I)-Catalyzed Chemoselective Amide Carbamoylation in Cabergoline Synthesis
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
The effect of phosphorus and nitrogen ligands on the CuCl catalysed reaction of ethylisocyanate with an ergoline carboxamide has been studied. Phosphorus ligands afford chemoselectively the desired compound, while nitrogen ligands revert the observed selectivity. The use of phosphorus and nitrogen ligands is a novel and mild method for the Cu(I) salts catalyzed carbamoylation by alkylisocyanates.
Copper-catalyzed carbamoylation - phosphorus and nitrogen ligands - Cabergoline