@article {44177, title = {Facile one-pot multi-component synthesis of spirooxindoles and 3, 3 {\textquoteleft}-disubstituted oxindoles via sp(3) C-H activation/functionalization of azaarenes}, journal = {Chemistryselect}, volume = {2}, year = {2017}, month = {SEP}, pages = {9147-9152}, type = {Article}, abstract = {

A novel one-pot multicomponent reaction (MCR) protocol has been demonstrated for the first time for sustainable and facile synthesis of spirooxindoles and 3, 3 {\textquoteleft}-disubstituted oxindoles in an excellent yield via sp(3) C-H activation/functionalization of 2-methyl azaarenes and (2-azaaryl)methanes with isatin, active methylene compounds using eco-friendly heterogeneous, reusable silica-supported dodecatungstophosphoric acid (DTP/SiO2) catalyst.

}, keywords = {3, 3{\textquoteright}-disubstituted oxindoles, azaarenes, silica-supported dodecatungstophosphoric acid (DTP/SiO2) catalyst, sp(3) C-H activation/functionalization, spirooxindoles}, issn = {2365-6549}, doi = {10.1002/slct.201701507}, author = {Pathan, Mohsinkhan Y. and Chavan, Santosh S. and Shaikh, Taufeekaslam M. Y. and Thorat, Shridhar H. and Gonnade, Rajesh G. and Mulla, Shafeek A. R.} } @article {48434, title = {Synthesis, crystal structure and Hirshfeld surface analysis of a zinc(II) coordination polymer of 5-phenyl-1,3,4-oxa-diazole-2-thiol-ate}, journal = {Acta Crystallographica Section E Crystallographic Communications}, volume = {87}, year = {2022}, month = {AUG}, pages = {794-797}, type = {Article}, abstract = {

A new zinc coordination polymer with 5-phenyl-1,3,4-oxa-diazole-2-thiol-ate, namely,\ catena-poly[zinc(II)-bis-(μ2-5-phenyl-1,3,4-oxa-diazole-2-thiol-ato)-κ2N3:S;κ2S:N3], [Zn(C8H5N2OS)2]n, was synthesized. The single-crystal X-ray\ diffraction analysis\ shows that the polymeric structure crystallizes in the centrosymmetric monoclinic\ C2/cspace group.\ The ZnII\ atom is coordinated to two S and two N atoms from four crystallographically independent (L) ligands, forming zigzag chains along the [001] direction. This polymer complex forms an eight-membered [Zn{\textendash}S{\textendash}C{\textendash}N{\textendash}Zn{\textendash}S{\textendash}C{\textendash}N] chair-like ring with two ZnII\ atoms and two ligand mol-ecules. On the Hirshfeld surface, the largest contributions come from the short contacts such as\ van der Waals forces,\ including H...H, C...H and S...H. Inter-actions including N...H, O...H and C...C contacts were also observed; however, their contribution to the overall stability of the\ crystal lattice\ is minor.

}, keywords = {3, 4-oxa-diazole-2-thiol; coordination polymer; Hirshfeld surface analysis, crystal structure; zinc complex; 5-phenyl-1}, doi = {10.1107/S2056989022006922}, author = {Pirimova, Mehribon and Torambetov, Batirbay and Kadirova, Shakhnoza and Ziyaev, Abdukhakim and Gonnade, Rajesh G. and Ashurov, Jamshid} }