School Of Basic And Applied Sciences

Permanent URI for this communityhttps://kr.cup.edu.in/handle/32116/17

Browse

Filters

Settings

Subject: search.filters.subject.room temperature

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Mandelic acid catalyzed one-pot pseudo three-component synthesis of various trisubstituted methane derivatives at room temperature
    (Arkat, 2022-11-03T00:00:00) Banerjee, Bubun; Singh, Arvind; Sharma, Aditi; Priya, Anu; Kaur, Manmeet; Kaur, Gurpreet; Gupta, Vivek Kumar; Jaitak, Vikas
    A simple, mild, eco-friendly, general and convenient approach has been developed for the synthesis of various trisubstituted methane derivatives via one-pot pseudo three-component reactions between one equivalent of aromatic aldehydes and two equivalents of 6-amino-uracils or dimedone respectively using a catalytic amount of mandelic acid as a low cost, commercially available, efficient organo-catalyst in aqueous ethanol at room temperature. � 2022 Arkat. All rights reserved.
  • No Thumbnail Available
    Item
    Visible-Light-Induced Metal- and Photocatalyst-Free Radical Cascade Cyclization of Cinnamamides for Synthesis of Functionalized Dihydroquinolinones
    (American Chemical Society, 2023-07-18T00:00:00) Nishad, Chandra Shekhar; Suman, Pallav; Saha, Himadri; Banerjee, Biplab
    Visible-light-promoted metal- and photocatalyst-free radical cascade cyclization of cinnamamides with ?-oxocarboxylic acids is described for sustainable synthesis of diverse pharmaceutically important dihydroquinolinone scaffolds in one pot under mild conditions. The decarboxylative cascade cyclization proceeded efficiently at room temperature without the need for expensive photocatalysts such as Ir or Ru complexes, which indicates the practicability and environmentally benign nature of this protocol. Preliminary mechanistic studies reveal that the blue LED irradiation efficiently cleaves the I-O bond of the hypervalent iodine reagent PhI(O2CCOAr)2 formed through ligand exchange between iodobenzene diacetate and arylglyoxylic acid to initiate the cascade reaction. The synthetic value of this operationally simple and energy-efficient method is further demonstrated by late-stage functionalization of drug molecules in excellent yields. � 2023 American Chemical Society.