32019-33-3Relevant articles and documents
Gold-Catalyzed Oxidative Aminocyclizations of Propargyl Alcohols and Propargyl Amines to Form Two Distinct Azacyclic Products: Carbene Formation versus a 3,3-Sigmatropic Shift of an Initial Intermediate
Chao, Tzu-Hsuan,Chen, Mu-Jeng,Liu, Rai-Shung,Raj, Antony Sekar Kulandai,Sasane, Amit Vijay
supporting information, p. 16932 - 16938 (2020/11/30)
Gold-catalyzed oxidations of propargyl alcohols with nitrones by using a P(tBu)2(o-biphenyl)Au+ catalyst, afforded bicyclic annulation products from the Mannich reactions of gold enolates. The same reactions of propargyl amines with nitrones by using the same gold catalyst gave distinct oxoarylation products. Our DFT calculations indicate that oxidation of propargyl alcohols with nitrones by using electron-rich gold catalysts lead only to gold carbenes, which can generate gold enolates or oxoarylation intermediates with enolate species having a barrier smaller than that of oxoarylation species.
Copper-Catalyzed Synthesis of Polysubstituted Pyrroles through [3+1+1] Cycloaddition Reaction of Nitrones and Isocyanides
Tian, Zhuang,Xu, Jiaojiao,Liu, Bingxin,Tan, Qitao,Xu, Bin
supporting information, p. 2603 - 2606 (2018/05/22)
An efficient, copper-catalyzed [3+1+1] cycloaddition reaction was developed for the expedient synthesis of pharmacologically interesting polysubstituted pyrroles from easily available nitrones and α-acidic isocyanides. The given approach features a new mo
LIC-KOR promoted nitrone reactivity: Stereoselective synthesis of highly conjugated imines and secondary amines
Parisotto, Stefano,Boggio, Paolo,Prandi, Cristina,Venturello, Paolo,Deagostino, Annamaria
supporting information, p. 5791 - 5794 (2015/09/29)
The reactivity of metalated alkoxy-1,3-dienes and α-aryl-N-phenylnitrones in the presence of LIC-KOR base, equimolar mixture of alkyllithium (LIC) and potassium alcoxides (KOR), (Schlosser, 1994) [1] has been studied. A cascade reaction involving a E1cb p