Search Results - "Kalkhambkar, Rajesh G."

Aryltriazenes as Coupling Partners in the Hiyama, Hiyama‐Suzuki and Hiyama‐Heck Cross‐Coupling Reactions Using Conventional and Ionic Liquid Reagents and Solvents by Anchi, Athmanand, Malunavar, Shruti S., Naik, Ravi S., Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…Application of conventional and ionic liquid (IL) solvents and reagents in the Hiyama cross‐coupling reactions using triazenes as coupling partners was…”
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Highly Efficient Synthesis of 1,3-Dioxanes via Prins Reaction in Brønsted-Acidic Imidazolium Ionic Liquid by Kalkhambkar, Rajesh G., Jeong, Yeon T.

“…The high-yielding synthesis of a wide variety of 1,3-dioxanes via the Prins reaction under mild conditions has been demonstrated using Brønsted-acidic…”
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Libraries of C‐5 Substituted Imidazoles and Oxazoles by Sequential Van Leusen (VL)–Suzuki, VL–Heck and VL–Sonogashira in Imidazolium‐ILs with Piperidine‐Appended‐IL as Base by Savanur, Hemantkumar M., Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…Facile access to diverse C5‐substituted imidazoles and oxazoles via sequential Van Leusen–Suzuki, Van Leusen–Heck, and Van Leusen–Sonogashira protocols,…”
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Facile Access to Diverse Libraries of Internal Alkynes via Sequential Iododediazoniation/Decarboxylative Sonogashira Reaction in Imidazolium ILs without Ligand or Additive by Prabhala, Pavankumar, Savanur, Hemantkumar M., Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…Convenient access to diverse libraries of internal alkynes via decarboxylative Sonogashira reaction of alkynyl‐carboxylic acids with iodoarenes, employing…”
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Piperidine-appended imidazolium ionic liquid as task-specific basic-IL for Suzuki and Heck reactions and for tandem Wittig-Suzuki, Wittig-Heck, Horner-Emmons-Suzuki, and Horner-Emmons-Heck protocols by Savanur, Hemantkumar M., Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…[Display omitted] •[PAIM][NTf2]/[BMIM][X]/Pd-catalyst for Suzuki and Heck cross-coupling without additive.•[PAIM][NTf2]/[BMIM][X] for Horner-Emmons and Wittig…”
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Highly efficient synthesis of amides via Ritter chemistry with ionic liquids by Kalkhambkar, Rajesh G., Waters, Sarah N., Laali, Kenneth K.

“…The utility of Brønsted-acidic imidazolium ionic liquid [BMIM(SO 3H)][OTf] as catalyst for the high yield synthesis of a wide variety of amides under mild…”
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(Z)-Ethyl 2-cyano-3-(1H-imidazol-2-yl)acrylate by Kalkhambkar, Rajesh G, Kumar, Mahesh, Gayathri, D, Oh, Jeongsu, Jeong, Yeon Tae

“…The crystal structure of the title compound, C9H9N3O2, features N-H⋯N and C-H⋯O inter-actions. The N-H⋯N inter-action generates a chain running along the a…”
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1‐Aryltriazenes in the Suzuki, Heck, and Sonogashira Reactions in Imidazolium‐ILs, with [BMIM(SO3H)][OTf] or Sc(OTf)3 as Promoter, and Pd(OAc)2 or NiCl2·glyme as Catalyst by Sutar, Suraj M., Savanur, Hemantkumar M., Malunavar, Shruti S., Prabhala, Pavankumar, Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…1‐Aryltriazenes, the protected and more stable form of aryl‐diazonium species, can be conveniently unmasked with Brønsted acidic‐IL or Sc(OTf)3 and coupled…”
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(E)-Ethyl 2-cyano-3-(furan-2-yl)acrylate by Kalkhambkar, Rajesh G, Gayathri, D, Gupta, Vivek K, Kant, Rajni, Jeong, Yeon Tae

“…There are two independent mol-ecules in the asymmetric unit of the title compound, C(10)H(9)NO(3), in both of which, all non-H atoms except for the methyl C…”
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(Z)-2-[2-(4-Methyl-benzyl-idene)hydrazin-yl]pyridine by Yuvaraj, Haldorai, Sundaramoorthy, S, Velmurugan, D, Kalkhambkar, Rajesh G

“…Mol-ecules of the title compound, C(13)H(13)N(3), are essentially planar (r.m.s. deviation for all non-H atoms = 0.054 Å). The dihedral angle between the two…”
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Arenediazonium salts immobilized in imidazolium ionic liquids as electrophilic partners in the Pd(OAc) 2-catalyzed Matsuda–Heck arylation by Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…The utility of arenediazonium salts immobilized in imidazolium-ILs [BMIMPF 6 and BMIMBF 4] for facile, high yielding, synthesis of olefins via the Pd(OAc)…”
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Pd(OAc) 2-catalyzed cross-coupling of polyfluoroarenes with simple aromatics in imidazolium ionic liquids (ILs) without oxidant and additive and with recycling/reuse of the IL by Kalkhambkar, Rajesh G., Laali, Kenneth K.

“…Polyfluoroarenes can be cross-coupled with simple aromatics (benzene, toluene, and anisole), in good isolated yields, by using Pd(OAc) 2 dissolved in…”
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In vitro antimicrobial combat, molecular modelling and structure activity relationship studies of novel class of aryl-ethyne tethered coumarin analogues and some 3-aryl coumarin derivatives by Prabhala, Pavankumar, Sutar, Suraj M., Savanur, Hemantkumar M., Joshi, Shrinivas D., Kalkhambkar, Rajesh G.

“…A series of novel class of aryl ethyne-tethered coumarin analogues (series 1) and some 3-aryl coumarin cognates (series 2) were synthesized, and their in vitro…”
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Triflic Anhydride: A Mild Reagent for Highly Efficient Synthesis of 1,2-Benzisoxazoles, Isoxazolo, and Isothiazolo Quinolines Without Additive or Base by Kalkhambkar, Rajesh G., Yuvaraj, H.

“…The synthetic utility of trifluoromethanesulphonic anhydride (triflic anhydride, TA) without additive or base for the high-yielding synthesis of a wide variety…”
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Pd-catalysed one-pot and three-component sequential chemoselective double cross-coupling: Synthesis of novel 2-aryl-1,3-azoles from 4-bromophenyl tosylate by Jamadar, Imamhusen, Anchi, Athmanand, Kurahatti, Sunita, Jadhav, Vinod S., Malunavar, Shruti S., Kalkhambkar, Rajesh G., Kurkuri, Mahaveer D.

“…One of the principles of green and sustainable chemistry is to use green solvents and one-pot synthetic methods which can eliminate the need for drawn-out…”
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Ionic liquid Mediated Pd-catalyzed sonochemistry for facile synthesis of carbazoles: Molecular Modelling and antimicrobial studies by Jamadar, Imamhusen, Anchi, Athmanand, Malunavar, Shruti S., Kalkhambkar, Rajesh G., Sutar, Suraj M., Joshi, Shrinivas D.

“…Herein we have described the Pd-catalyzed sonochemistry driven by [BMIM]-IL as re-useable solvent to synthesize various carbazole scaffolds from…”
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Reaction of triflyl-imidazole with aldoximes: facile synthesis of nitriles and formation of novel aldoxime-bis( N-triflyl)-imidazole adducts by Kalkhambkar, Rajesh G., Bunge, Scott D., Laali, Kenneth K.

“…The synthetic utility of N-triflylimidazole as an in situ reagent for facile, high yielding, synthesis of various aliphatic, aromatic, and heteroaromatic…”
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In silico molecular docking and In vitro antimicrobial evaluation of some C5-substituted imidazole analogues by Prabhala, Pavankumar, Savanur, Hemantkumar M., Sutar, Suraj M., Naik, Krishna N., Mittal, Manoj Kumar, Kalkhambkar, Rajesh G.

“…Multi-drug resistant pathogens are becoming hard-to-treat causing severe infections in humans across the globe emphasizing the prevailing need to discover new…”
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N-(2-Chloro-quinolin-3-ylmethyl-ene)aniline by Kalkhambkar, Rajesh G, Kulkarni, Geeta M, Hwang, Wen-Shu, Lee, Chen-Shiang

“…The title compound, C(16)H(11)ClN(2), displays a trans configuration across the C=N bond and a transoid arrangement across the quinoline ring and the…”
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Synthesis and biological activities of some new fluorinated coumarins and 1-aza coumarins by Kalkhambkar, Rajesh G., Kulkarni, Geeta M., Kamanavalli, Chandrappa M., Premkumar, N., Asdaq, S.M.B., Sun, Chung Ming

“…A series of new fluorinated coumarins and 1-aza coumarins have been synthesized and the presence of fluorine in these molecules and its effect on their…”
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