High nucleophilicity of cyclic amidocarbene toward aryl isocyanates, new approach to spiro[azetidinone-4,3′-indolinone] derivatives
The nucleophilic addition of β-lactam-4-ylidenes 2, a type of ambiphilic cyclic amidocarbene, to aryl isocyanates has been studied and their application in organic synthesis has been demonstrated. Thermolysis of spiro[β-lactam-4,2′-oxadiazolines] 1 in the
Cheng, Ying,Wang, Bo,Cheng, Lan-Qing
p. 4418 - 4427
(2007/10/03)
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