Search Results - "CHAUHAN, PANKAJ"

Organocatalytic Carbon–Sulfur Bond-Forming Reactions by Chauhan, Pankaj, Mahajan, Suruchi, Enders, Dieter

“…The authors examine organocatalytic carbon-sulfur bond-forming reactions…”
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N-Heterocyclic Carbene Catalyzed Activation of Esters: A New Option for Asymmetric Domino Reactions by Chauhan, Pankaj, Enders, Dieter

“…Esters—what else! A new strategy in NHC organocatalysis allows the α‐, β‐ and γ‐activation of saturated and unsaturated esters. The resulting acyl azolium…”
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Advances in Organocatalytic 1,6‐Addition Reactions: Enantioselective Construction of Remote Stereogenic Centers by Chauhan, Pankaj, Kaya, Uğur, Enders, Dieter

“…Due to the competing 1,4‐addition reactions and the distance from the chirality information, the construction of a remote stereogenic center via 1,6‐addition…”
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Achieving Molecular Complexity via Stereoselective Multiple Domino Reactions Promoted by a Secondary Amine Organocatalyst by Chauhan, Pankaj, Mahajan, Suruchi, Enders, Dieter

“…Conspectus In the last two decades, organocatalysis has emerged as an intensively investigated and rapidly growing area of research facilitating many known and…”
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Organocatalytic asymmetric synthesis of 3-amino-2-oxindole derivatives bearing a tetra-substituted stereocenter by Chauhan, Pankaj, Chimni, Swapandeep Singh

“…3-Amino-2-oxindoles bearing tetra-substituted stereocenter are very important constituents of many bioactive and pharmaceutical agents. In the last few years,…”
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N‐Heterocyclic Carbene Catalysis via Azolium Dienolates: An Efficient Strategy for Remote Enantioselective Functionalizations by Chen, Xiang‐Yu, Liu, Qiang, Chauhan, Pankaj, Enders, Dieter

“…N‐heterocyclic carbene (NHC) catalysis has emerged as a powerful strategy in organic synthesis. In recent years a number of reviews have been published on…”
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Bifunctional Amine-Squaramides: Powerful Hydrogen-Bonding Organocatalysts for Asymmetric Domino/Cascade Reactions by Chauhan, Pankaj, Mahajan, Suruchi, Kaya, Uğur, Hack, Daniel, Enders, Dieter

“…Organocatalytic domino/cascade reactions provide a convenient method for the construction of complex molecular structures bearing multiple stereocenters in a…”
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Asymmetric Organocatalytic Addition Reactions of Maleimides: A Promising Approach Towards the Synthesis of Chiral Succinimide Derivatives by Chauhan, Pankaj, Kaur, Jasneet, Chimni, Swapandeep Singh

“…Recent progress in asymmetric organocatalysis has led to the development of several asymmetric transformations that employ various substrates. Among these…”
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Mechanochemistry assisted asymmetric organocatalysis: A sustainable approach by Chauhan, Pankaj, Chimni, Swapandeep Singh

“…Ball-milling and pestle and mortar grinding have emerged as powerful methods for the development of environmentally benign chemical transformations. Recently,…”
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Squaramide‐Catalyzed Asymmetric aza‐Friedel–Crafts/N,O‐Acetalization Domino Reactions Between 2‐Naphthols and Pyrazolinone Ketimines by Kaya, Uğur, Chauhan, Pankaj, Mahajan, Suruchi, Deckers, Kristina, Valkonen, Arto, Rissanen, Kari, Enders, Dieter

“…N‐Boc ketimines derived from pyrazolin‐5‐ones were explored to develop an unprecedented domino aza‐Friedel–Crafts/N,O‐acetalization reaction with 2‐naphthols…”
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Influence of Surface Nano-Structuring on Microstructure, Corrosion Behavior and Osteoblast Response of Commercially Pure Titanium Treated Through Ultrasonic Shot Peening by Chauhan, Pankaj, Shadangi, Yagnesh, Bhatnagar, Atul, Singh, Vakil, Chattopadhyay, Kausik

“…Commercially pure titanium (Cp-Ti) is a widely accepted material for dental implants. Increases in surface roughness of these implants enhance osseointegration…”
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Electrocatalytic Oxygen Evolution on Glassy Carbon Electrode Modified with Optimized GC/CuxFe3 –xO4 (0 ≤ x ≤ 1.0) Nanocomposite in 1 M KOH Solution by Lal, Basant, Chauhan, Pankaj

“…Copper substituted ferrites (Cu x Fe 3 –  x O 4 ; (0 ≤ x ≤ 1.0) were prepared by the egg white auto-combustion method at 550°C and investigated their…”
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Critical Role of Etching Parameters in the Evolution of Nano Micro SLA Surface on the Ti6Al4V Alloy Dental Implants by Chauhan, Pankaj, Koul, Veena, Bhatnagar, Naresh

“…The surface of dental implants plays a vital role in early and more predictable osseointegration. SLA (sandblasted large grit and acid-etched) represents the…”
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Microstructural examination of aluminium-copper functionally graded material developed by powder metallurgy route by Kumar Chauhan, Pankaj, Khan, Sabah

“…Present work represents the preparation of metal-metal (Al-Cu) functionally graded materials (FGMs) using powder metallurgy followed by sintering. The Al-Cu…”
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A Climatic Surprise–Slope Instability Triggered by Heavy Rain in Maldevta Region, Dehradun, Uttarakhand, on 20 August, 2022 by Sain, Kalachand, Mehta, Manish, Kumar, Vinit, Gupta, Vikram, Chauhan, Pankaj

“…The Himalayan states are familiar with the adverse impact of extreme events like excessive precipitations, which lead to floods, flash floods, landslides,…”
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An Investigation of Cloudburst-triggered Landslides and Flash Floods in Arakot Region of Uttarkashi District, Uttarakhand by Chauhan, Pankaj, Sain, Kalachand, Mehta, Manish, Singh, Sudhir Kumar

“…A cloudburst event occurred at around 04:00hrs (IST), on 18, August 2019, elicited landslides and flash floods, at Tikochi and Makudi village under the Arakot…”
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Asymmetric Synthesis of Tetrahydropyridines via an Organocatalytic One-Pot Multicomponent Michael/Aza-Henry/Cyclization Triple Domino Reaction by Blümel, Marcus, Chauhan, Pankaj, Hahn, Robert, Raabe, Gerhard, Enders, Dieter

“…A low loading of a quinine-derived squaramide efficiently catalyzes the triple-domino Michael/aza-Henry/cyclization reaction between 1,3-dicarbonyl compounds,…”
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Geo-morphometric prioritization of Aglar micro watershed in Lesser Himalaya using GIS approach by Kumar, Vikram, Sen, Sumit, Chauhan, Pankaj

“…Lesser Himalayan watersheds are most susceptible to conservational deprivation, that needs to accurate management and planning of available natural resources…”
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Facile Construction of Vicinal Quaternary and Tertiary Stereocenters via Regio- and Stereoselective Organocatalytic Michael Addition to Nitrodienes by Chauhan, Pankaj, Chimni, Swapandeep Singh

“…A highly regio‐ and stereoselective protocol for the synthesis of vicinal quaternary and tertiary stereocenters has been developed. The 6′‐OH Cinchona…”
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In vitro antidiabetic, antioxidant, antimicrobial, and cytotoxic activity of Murraya koenigii leaf extract intercedes ZnO nanoparticles by Sharma, Avinash, Nagraik, Rupak, Venkidasamy, Baskar, Khan, Azhar, Dulta, Kanika, Kumar Chauhan, Pankaj, Kumar, Deepak, Shin, Dong‐Soo

“…Nanotechnology is an emerging field with tremendous potential and usage of medicinal plants and green preparation of nanoparticles (NPs) is one of the widely…”
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