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Guguloth, Hanmanthu
- Serendipitous Formation of First Neutral Mononuclear Rh(II) Complex of 1, 10-Phenanthroline
Abstract Views :315 |
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Authors
Shravankumar Kankala
1,
Prasad Gundepaka
2,
Vinutha Chakilam
1,
Kavitha Natte
1,
Hanmanthu Guguloth
1,
Ravinder Vadde
1,
Chandra Sekhar Vasam
3,
Mukkanti Kagga
2
Affiliations
1 Department of Chemistry, Kakatiya University, Warangal
2 Centre for Pharmaceutical Science, Institute of Science and Technology, JNTU, Hyderabad
3 Department of Chemistry, Satavahana University, Karimnagar, 505 001
1 Department of Chemistry, Kakatiya University, Warangal
2 Centre for Pharmaceutical Science, Institute of Science and Technology, JNTU, Hyderabad
3 Department of Chemistry, Satavahana University, Karimnagar, 505 001
Source
Asian Journal of Research in Chemistry, Vol 6, No 8 (2013), Pagination: 727-730Abstract
The reaction of RhCl3 with 1,10-phenanthroline followed by a carboxyl functionalized tertiaryphosphine in refluxing ethanol led to serendipitous formation of a first neutral mononuclear Rh(II) complex of 1,10-phenanthroline as [Rh(II)Cl<SUB>2</SUB>(1,10-phen)2] without incorporating the phosphine. This incident was evidenced by elemental analysis, single crystal X-ray diffraction, EPR and Mass spectroscopic studies.Keywords
Rhodium, Tertiary phosphines, 1, 10-phenanthroline, Reduction
References
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- Synthesis of Piperidine Bound 3,4,5-Trisubstituted Isoxazolines Via 1,3- Dipolar Cycloaddition Reactions Catalyzed By N-Heterocyclic Carbene
Abstract Views :843 |
PDF Views:2
Authors
Prasad Gundepaka
1,
Shravankumar Kankala
2,
Hanmanthu Guguloth
2,
Shylaja Kotte
2,
Vinutha Chakilam
2,
Mukkanti Kagga
1,
Ravinder Vadde
2,
Chandra Sekhar Vasam
3
Affiliations
1 Centre for Pharmaceutical Science, Institute of Science and Technology, JNTU, Hyderabad
2 Department of Chemistry, Kakatiya University, Warangal, 506 009, IN
3 Department of Chemistry, Satavahana University, Karimnagar, 505 001, IN
1 Centre for Pharmaceutical Science, Institute of Science and Technology, JNTU, Hyderabad
2 Department of Chemistry, Kakatiya University, Warangal, 506 009, IN
3 Department of Chemistry, Satavahana University, Karimnagar, 505 001, IN
Source
Asian Journal of Research in Chemistry, Vol 6, No 10 (2013), Pagination: 916-919Abstract
A first example of organo-N-heterocyclic carbene (NHC) catalyzed click-type fast 1,3-dipolar cycloaddition of nitrile oxides with piperidine alkene alkaloids was developed for the regioselective synthesis of 3,4,5-trisubstituted isoxazolines. Triethylamine (Et3N) was employed as an effective base to generate both nitrile oxide and the organo- NHC catalyst in situ. This catalytic approach was used to attach a variety of substituents, including other biologically active fragments, onto the isoxazoline ring to selectively design multinucleus structures. A catalytic cycle is proposed and the remarkable regiocontrol in the formation of isoxazolines was ascribed to a beneficial zwitterion intermediate developed by the interaction of the strongly nucleophilic organo-NHC catalyst with alkene followed by nitrile oxide.Keywords
1,3-dipolar Cycloaddition, N-heterocyclic Carbene, Isoxazolines, Piperidine Alkene AlkaloidsReferences
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- Synthesis of N4 Donor Novel Schiff Base Ligands and their Co(II), Ni(II), Cu(II), Rh(III) and Pd(II) Metal Complexes for Biological Studies and Catalytic Oxidation on Drug Molecule
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Authors
Affiliations
1 Department of Chemistry, Kakatiya University, Warangal 506009, T.S, IN
1 Department of Chemistry, Kakatiya University, Warangal 506009, T.S, IN