Browsing by Author "Sahu, Archana Kumari"

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    Synthesis of Card and Nitrogen Hetero-Cycle Compounds
    (2022) Sahu, Archana Kumari
    The contents of this thesis have been divided into five chapters based on the results of experimental work performed during complete course of research period. Chapter 1 mainly discusses about tandem reactions, its types and tandem reactions carried out on alkynes and donor-acceptor cyclopropanes. Chapter 2 describes the synthesis of dibenzocyclohepta[1,2-a]naphthalene derivatives from alkynyl benzyl alcohols and phenylacetaldehydes via sequential electrophilic addition and double Friedel–Crafts reactions. Chapter 3 illustrates In(OTf)3-catalyzed one-pot tandem Mannich/Conia-ene cyclization reaction for the construction of tetrahydro-1H-pyrrolo[2,1-a]isoindolone-1,1-dicarboxylates from N-propargyl amido alcohols with 1,3-dicarbonyl compounds. Chapter 4 discloses a direct method for the synthesis of dibenzoyl tetrahydro-[1,5]diazocinodiisoindolediones from N-propargyl amido alcohols employing Bi(OTf)3 as catalyst. Chapter 5 demonstrates the synthesis of 3C-homologated active methylene substituted 2H-indazoles via a sequential Ni(II) catalysed ring opening of donor acceptor cyclopropanes with arylamines followed by Sn(II) mediated reductive cyclization reaction