Abstract
The carbodiimides 2, obtained from aza-Wittig reactions of vinylimino-phosphorane 1 with aromatic isocyanates, reacted with aliphatic primary amines to give mainly 2-alkylamino-4H-imidazolin-4-ones 4 with unusual selectivity.
ACKNOWLEDGMENTS
We gratefully acknowledge financial support of this work by the Dawn Plan of Science and Technology for Young Scientists of Wuhan City and Natural Science Foundation of Hubei Province.