Search

Your search keyword '"Das, Pralay"' showing total 491 results
Start Over Author "Das, Pralay"
491 results on '"Das, Pralay"'

1. Numerical Modelling of Active Target Time Projection Chamber for Low Energy Nuclear Physic

Author

Das, Pralay Kumar, Datta, Jaydeep, Majumdar, Nayana, and Mukhopadhyay, Supratik

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

A numerical model based on hydrodynamic approach has been developed to emulate the device dynamics of active target Time Projection Chamber which is utilized for studying nuclear reaction through three dimensional tracking of concerned low energy particles. The proposed model has been used to investigate the performance of a prototype active target Time Projection Chamber, namely SAT-TPC, to be fabricated at Saha Institute of Nuclear Physics, for its application in nuclear physics experiments. A case study of non-relativistic elastic scattering $^4He+^{12}C$ with beam energy $25~MeV$ and current $2.3~pA$ has been opted for this purpose. The effect of beam induced space charge on the tracking performance the SAT-TPC prototype has been studied to optimize the beam current and scheme of the anode readout segmentation. The model has been validated by comparing its results to that of a particle model used to explain observed distortion in scattered particle tracks in a low energy nuclear physics experiment.

Published
2024

2. R &D of Time Projection Chamber for Particle Tracking

Author

Das, Pralay Kumar, Kumar, Vishal, Das, Subhendu, Twisha, Munmun, Bhattacharya, Purba, Bhattacharya, Sudeb, Sarkar, Sandip, Majumdar, Nayana, Mukhopadhyay, Supratik, Jena, Satyajit, editor, Shivaji, Ambresh, editor, Bhardwaj, Vishal, editor, Lochan, Kinjalk, editor, Jassal, Harvinder Kaur, editor, Joseph, Anosh, editor, and Khuswaha, Pankaj, editor

Published
2024
Full Text
View/download PDF

17. 1,2,3-Triazole-Guided Multi-Component Sonogashira Coupling of Substituted Benzosuberenes Derived from Cedrus deodara Oil.

Author

Kumar, Ashish, Kumar, Mahender, Sharma, Poonam, and Das, Pralay

Abstract

Copyright of Synthesis is the property of Georg Thieme Verlag Stuttgart and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
Full Text
View/download PDF

32. Palladium‐catalyzed domino reaction for the synthesis of benzo‐cyclohepta‐quinolinone analogues from Cedrus deodara oil.

Author

Yamini, Kumar, Ashish, Mehara, Pushkar, and Das, Pralay

Subjects
PETROLEUM, AROMATIZATION, PALLADIUM
Abstract

First‐time vinyl bromide‐substituted benzocycloheptene compound has been explored as a precursor for the synthesis of benzo‐cyclohepta‐quinolinone (BCQ) analogues following a domino reaction. The vinyl bromide‐substituted benzocycloheptene was synthesized from himachalenes, extracted from Cedrus deodara oil. The reaction proceeds through C‐C bond formation followed by palladium catalyzed C‐N cross‐coupling and dehydrogenative aromatization in a consecutive and atom‐economic approach for BCQ analogues synthesis. Moreover, the present methodology is applicable for various substituted β‐enaminones with good to moderate yield. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

37. Oxalic acid as a dual C1 surrogate for heterogeneous palladium-catalyzed tandem four-component quinazolinone synthesis.

Author

Sheetal, Sharma, Poonam, Kumar, Ashish, Sharma, Navneet, Giri, Kousik, and Das, Pralay

Subjects
QUINAZOLINONES, OXALIC acid
Abstract

Herein, a heterogeneous Pd/C-catalyzed direct one-step four-component double carbonylative approach for cascade synthesis of 2-aryl quinazolinones has been reported for the first time starting from 2-iodoaniline derivatives and aryl iodides. The given reaction involves the simultaneous implementation of two different gaseous surrogates i.e., ammonium carbamate as an NH3 precursor and oxalic acid as a bi-functional reagent acting as a CO as well as a C-atom surrogate under ligand-free conditions. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

40. 1,2,3‐Triazole‐Assisted Heck Cross‐Coupling for the Synthesis of Olefinated Benzosuberene Analogues from Cedrus deodara Oil.

Author

Kumar, Ashish, Yamini, Mehara, Pushkar, Sharma, Poonam, and Das, Pralay

Subjects
PETROLEUM, CLICK chemistry, PALLADIUM
Abstract

Herein, we have reported an effective semi‐synthetic strategy for the synthesis of a new class of triazole‐bearing alkenylated benzosuberene analogues from himachalenes, extracted from Cedrus deodara oil. A highly efficient 1,2,3‐triazole triggered Heck cross‐coupling has been developed under palladium catalyzed conditions. The 1,2,3‐triazole moiety helps significantly to activate the carbon‐halogen bond and thereby promotes the coupling product. The developed protocol endures an array of arylated as well as alkylated triazole‐substituted benzocycloheptene to achieve the corresponding products in moderate to good yields. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results