Convenient synthesis of spiroindolenines from tryptamine-derived isocyanides and organic azides by cobalt catalysis in pure water
作者:Shuai Jiang、Wen-Bin Cao、Hai-Yan Li、Xiao-Ping Xu、Shun-Jun Ji
DOI:10.1039/d1gc00270h
日期:——
A Co-catalyzed coupling of 3-(2-isocyanoethyl)indoles with organic azides in pure water for accessing spiroindolenine derivatives was developed. This strategy features mild reaction conditions, high atom-economy, excellent yields, wide substrate scopes, and broad functional group tolerance. The products were obtained simply by sequential operation involving extraction, concentration, precipitation
Ru(ii)-catalyzed intermolecular ortho-C–H amidation of aromatic ketones with sulfonyl azides
作者:M. Bhanuchandra、M. Ramu Yadav、Raja K. Rit、Malleswara Rao Kuram、Akhila K. Sahoo
DOI:10.1039/c3cc41915k
日期:——
Ru(II)-catalyzed intermolecular ortho-CâH amidation of weakly coordinating aromatic ketones with sulfonyl azides is reported. The developed reaction protocol can be extended to various substituted aromatic ketones to afford a wide range of desired CâN bond formation products in good yields.
1-(Alkylsulfonyl)- and 1-(arylsulfonyl)benzotriazoles react with sodium azide in acetonitrile to give the corresponding alkanesulfonyl and arenesulfonyl azides.
Cu-Catalyzed Multicomponent Polymerization To Synthesize a Library of Poly(<i>N</i>-sulfonylamidines)
作者:In-Hwan Lee、Hyunseok Kim、Tae-Lim Choi
DOI:10.1021/ja312592e
日期:2013.3.13
readily controlled by using diynes or diamines with long or rigid moieties. In addition, this polymerization is highly selective for three-component reactions over click reactions. The combination of the above factors enables the synthesis of high-molecular-weight polymers, which was challenging in previous MCPs. All three kinds of monomers (diynes, sulfonyl azides, and diamines) are readily accessible