Synthesis of 4-Imino-2H,3H,5H-[1,2,5]thiadiazolidin-1-oxide through Cycloaddition Reaction of N-Sulphinylanilines and N-(α-Cyano-α-aryl)-methylanilines
摘要:
Through the normal mode of cycloaddition reaction of N‐(α‐cyano‐α‐aryl)‐methylanilines (II) onto N‐sulphinylanilines (III) has provided 2,3,5‐triaryl‐4‐imino‐2H,3H,5H‐[1,2,5]thiadiazolidin‐1‐oxides (IV). The present protocol has advantage of convenient operation to synthesize heterocyclics in good yield.
Intermolecular [2 + 2] Cycloaddition/Isomerization of Allenyl Imides and Unactivated Imines for the Synthesis of 1-Azadienes Catalyzed by a Ni(ClO<sub>4</sub>)<sub>2</sub>·6H<sub>2</sub>O Lewis Acid
The intermolecular [2 + 2] cycloaddition/isomerization between allenyl imides and N-(2-methoxyphenyl) aldimine counterparts catalyzed by a Ni(ClO4)2·6H2O Lewisacid at room temperature was discovered, providing a facile access to 1-azadiene derivatives with high atom economy. The incorporation of an 2-oxazolidinone group into allene amides resulted in unusual reactivity for the imine-metathesis and
Exceptional effect of nitro substituent on the phosphonation of imines: the first report on phosphonation of imines to α-iminophosphonates and α-(N-phosphorylamino)phosphonates
A novel chemoselective method for the simple phosphonation of imines withH-phosphonate diethyl ester and study of the electronic and orientation effects of the substituents on phosphorylation reaction.
Component match in rhodium catalyzed three-component reactions of ethyl diazoacetate, H2O and aryl imines: a highly diastereoselective one-step synthesis of β-aryl isoserine derivatives
作者:Zhenqiu Guo、Taoda Shi、Jun Jiang、Liping Yang、Wenhao Hu
DOI:10.1039/b915013g
日期:——
Water and ethyl diazoacetate were found to be matched components for generating highly reactive nucleophilic oxonium ylide in the presence of a dirhodium acetate catalyst. Simultaneous trapping of the oxonium ylide intermediate with aryl imines gave β-aryl isoserine derivatives with high diastereoselectivity.
Pyrrole-based silyl dienolates undergo asymmetric vinylogous Mukaiyama Mannich reactions with a series of N-aryl aldimines in the presence of the Hoveyda-Snapper amino acid-derived silver(I) catalysts. The Manrdch products alpha,beta-unsaturated delta-ammo-gamma-butyrolactams-are typically obtained in high yields, excellent gamma-site selectivities and anti-diastereoselectivities, and up to 80% enantioselectivity.
Pope; Fleming, Journal of the Chemical Society, 1908, vol. 93, p. 1916