Organocatalytic Direct Asymmetric Aldol Reactions of 3-Isothiocyanato Oxindoles to Ketones: Stereocontrolled Synthesis of Spirooxindoles Bearing Highly Congested Contiguous Tetrasubstituted Stereocenters
reaction of 3-isothiocyanato oxindoles to simple ketones with bifunctional thiourea-tertiary amine as catalyst is reported. This strategy provides a promising approach for the asymmetric synthesis of a range of enantioenriched spirocyclic oxindoles bearing two highly congested contiguous tetrasubstituted carbon stereocenters. Versatile transformations of the spirocyclic oxindole products into other structurally
Glycosides of hydroxylamine derivatives: I. Phase transfer synthesis and the study of the influence of glucosaminides of isatine 3-oximes on bacterial luminescence
作者:V. O. Kuryanov、T. A. Chupakhina、A. A. Shapovalova、A. M. Katsev、V. Ya. Chirva
DOI:10.1134/s1068162011020105
日期:2011.3
bacterial luminescence inhibition test with marine luminescent bacteria Photobacterium leiognathi Sh1. The relationship of the structures of the isatin N-substituent and the 5-indolyl substituent and the glycoside capacity to suppress bacterial luminescence was analyzed.
Synthesis of Spirooxindole‐Benzo[d]oxazoles and Dihydrobenzofurans through Cycloaddition and Rearrangement of
<i>N</i>
‐Vinyl Nitrones and Arynes
作者:Hao Yuan、Dong‐Liu Lu、Cui Liang、Dong‐Liang Mo
DOI:10.1002/adsc.202101372
日期:2022.4.12
[3+2] cycloaddition and selective rearrangement of N-vinyl oxindole nitrones and arynes under transition metal-free conditions. Experimental results showed that the substituent on the nitrone N-vinyl group controlled the [1,3]- or [3,3]-rearrangement of their cycloadduct owing to its steric effect. The present method features broad substrate scope, good functional group tolerance, controllable [1,3]-
Synthesis of substituted thieno[2,3-d]thiazoles and indolo[3,2-d]thiazoles
作者:L. D. Pinkin、V. G. Dzyubenko、P. I. Abramenko、I. S. Shpileva
DOI:10.1007/bf00761998
日期:1987.3
Organocatalytic double arylation of 3-isothiocyanato oxindoles: Stereocontrolled synthesis of complex spirooxindoles
作者:Lin-Lin Zhang、Bing-Chao Da、Shao-Hua Xiang、Shuai Zhu、Zi-Yun Yuan、Zhen Guo、Bin Tan
DOI:10.1016/j.tet.2018.11.016
日期:2019.3
employed as the electrophiles for the organocatalyticMichael addition/cyclization cascade reaction with versatile 3-isothiocyanato oxindoles. Chiral bifunctional organocatalyst was appropriate for this enantioselective transformation to afford a variety of novel spirooxindoles, possessing a spirocyclic stereocenter adjacent to the aromatic ring, via asymmetricdouble arylation. These synthesized spirooxindoles