N-heterocyclic carbene ligands in copper-catalyzed addition of diethylzinc to N-sulfonylimines.
نویسندگان
چکیده
N-Heterocyclic carbenes (NHCs) were generated in-situ from imidazolium and imidazolinium salts by deprotonation of C-2 hydrogen and were used as ligands in the copper-catalyzed addition of diethylzinc to N-sulfonylimines. The copper-NHC complexes were shown to possess an efficient ligand acceleration effect (LAE).
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ورودعنوان ژورنال:
- Chemical & pharmaceutical bulletin
دوره 56 1 شماره
صفحات -
تاریخ انتشار 2008