L. Sudha

Bio: L. Sudha is an academic researcher from SRM University. The author has contributed to research in topics: Ring (chemistry) & Pyrrolidine. The author has an hindex of 4, co-authored 28 publications receiving 59 citations.

Chloridobis(ethyl-enediamine-κN,N')(n-pentyl-amine-κN)cobalt(III) dichloride monhydrate.

Abstract: The title complex, [CoCl(C5H13N)(C2H8N2)2]Cl2·H2O, comprises one chloridobis(ethyl­enediamine)(n-pentyl­amine)cobalt(III) cation, two chloride counter-anions and a water mol­ecule. The CoIII atom of the complex is hexa­coordinated by five N and one Cl atoms. The five N atoms are from two chelating ethyl­enediamine and one n-pentyl­amine ligands. Neighbouring cations and anions are connected by N—H⋯Cl and N—H⋯O hydrogen bonds to each other and also to the water mol­ecule.

Methyl 5-ferrocenyl-5a-hydr­oxy-1-methyl-10-oxo-2,3,3a,4,5a,10-hexa­hydro-1H-indeno[1,2:2′,3′]furo[3′,4′-b]pyrrole-3a-carboxyl­ate

Abstract: In the title compound, [Fe(C5H5)(C21H20NO5)], the pyrrolidine and cyclo­penta­none rings exhibit a twist conformation. The pyrrolidine ring is almost perpendicular to the cyclo­penta­none ring, making a dihedral angle of 81.91 (6)°. The mol­ecular conformation is stabilized by an intra­molecular O—H⋯N hydrogen bond and C—H⋯O inter­actions. The crystal structure is stabilized by inter­molecular C—H⋯O inter­actions.

3-(4-Chloro-phen-yl)-4-(4-methoxyphen-yl)-6-(phenyl-selenylmeth-yl)-2,3,3a,3b,4,5,5a,6,1'',2'',3'',4''-do-deca-hydro-azeto[2',3':3,4]pyrrolo[1,2-b]isoxazole-2-spiro-2''-naphthalene-5,1''-dione.

Abstract: In the title compound, C36H31ClN2O4Se, the four-membered β-lactam ring is fused to a pyrrolidine ring. The central five-membered ring of the fused tricyclic system exhibits an envelope conformation with the N atom as the flap, while the other five-membered ring exhibits a twist conformation. The chloro­phenyl ring is almost perpendicular to the pyrrolidine ring, making a dihedral angle of 73.45 (1)°. The crystal structure is stabilized by weak inter­molecular C—H⋯O inter­actions and the packing is further enhanced by C—H ⋯N inter­actions and π–π inter­actions between benzene rings of tetra­lone groups in mol­ecules related by an inversion center, with a centroid–centroid separation of 3.8923 (2) A.

4'-(4-Methoxy-phen-yl)-1,1',1''-trimethyl-dispiro-[indoline-3,2'-pyrrolidine-3',3''-pyrrolidine]-2,2'',5''-trione.

Abstract: In the title compound, C24H25N3O4, the pyrrolidine ring adopts an envelope conformation while the pyrrolidine-2′′,5′′-dione ring adopts a twist conformation. The indoline unit is planar [maximum deviation of −0.050 (9) A] and forms a dihedral angle of 40.36 (4)° with the methoxy­phenyl ring. Intra­molecular C—H⋯O hydrogen bonds are observed. In the crystal, mol­ecules are linked into a two-dimensional network parallel to the ab plane by inter­molecular C—H⋯O hydrogen bonds and C—H⋯π inter­actions.

An efficient green chemistry protocol for the synthesis of novel spiropyrrolizidine compounds

Abstract: An efficient method for the synthesis of spirooxindolopyrrolizidine/spirooxindolothiapyrrolizidine by the 1,3-dipolar cycloaddition of azomethine ylides generated via, decarboxylative condensation of 1,2-dicarbonyl compounds and L-proline/L-thiaproline/sarcosine with chalcones at ambient conditions with excellent yields has been described.