K
Kalpataru Das
Researcher at Central University, India
Publications - 42
Citations - 1019
Kalpataru Das is an academic researcher from Central University, India. The author has contributed to research in topics: Ring (chemistry) & Lewis acids and bases. The author has an hindex of 18, co-authored 41 publications receiving 921 citations. Previous affiliations of Kalpataru Das include Dr. Hari Singh Gour University & Indian Institute of Technology Kanpur.
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An efficient route to regioselective opening of N-tosylaziridines with zinc(II) halides
TL;DR: An efficient route for the regio-and stereoselective ring opening of N-tosylaziridines with zinc dihalides (ZnX2, X = Cl, Br, I) is described in this article.
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Lewis Acid-Mediated Highly Regioselective SN2-Type Ring-Opening of 2-Aryl-N-tosylazetidines and Aziridines by Alcohols
TL;DR: Lewis acid-mediated highly regioselective SN2-type ring-opening of 2-aryl-N-tosylazetidines with alcohols to afford various 1,3-amino ethers in excellent yields with good enantiomeric excess is described.
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Lewis Acid-Mediated Unprecedented Ring-Opening Rearrangement of 2-Aryl-N-tosylazetidines to Enantiopure (E)-Allylamines
TL;DR: A highly efficient strategy for Cu(OTf)2-mediated ring-opening of 2-aryl-N-tosylazetidines in polar and coordinating solvents followed by an unprecedented rearrangement to substituted achiral and chiral (E)-allylamines (ee >99%) is reported.
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Copper(II) triflate promoted cycloaddition of α-alkyl or aryl substituted N-tosylaziridines with nitriles: a highly efficient synthesis of substituted imidazolines
TL;DR: In this article, a cycloaddition mechanism was proposed to rationalize the formation of a nonracemic imidazoline from optically pure aziridine, based on the synthesis of substituted N-tosylaziridines with nitriles.
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From Au-Thiolate Chains to Thioether Sierpiński Triangles: The Versatile Surface Chemistry of 1,3,5-Tris(4-mercaptophenyl)benzene on Au(111).
Atena Rastgoo-Lahrood,Atena Rastgoo-Lahrood,Atena Rastgoo-Lahrood,Natalia Martsinovich,Matthias Lischka,Matthias Lischka,Matthias Lischka,Johanna Eichhorn,Johanna Eichhorn,Johanna Eichhorn,Paweł Szabelski,Damian Nieckarz,Thomas Strunskus,Kalpataru Das,Michael Schmittel,Wolfgang M. Heckl,Wolfgang M. Heckl,Wolfgang M. Heckl,Markus Lackinger,Markus Lackinger,Markus Lackinger +20 more
TL;DR: Self-assembly of 1,3,5-tris(4-mercaptophenyl)benzene (TMB), a 3-fold symmetric, thiol-functionalized aromatic molecule, was studied on Au(111) with the aim of realizing extended Au-thiolate-linked molecular architectures, with focus on resolving thermally activated structural and chemical changes by a combination of microscopy and spectroscopy.