NOPR Community:

Design and synthesis of spirotruxene and spirofluorene derivatives

2018-12-01T00:00:00Z

Title: Design and synthesis of spirotruxene and spirofluorene derivatives Authors: Kotha, Sambasivarao; Ali, Rashid; Panguluri, Nageswara Rao; Deb, Ashoke Chandra Abstract: The work presented here describes a facile and efficient method for the synthesis of spirotruxene and spirofluorene compounds using allylation and RCM as key steps from readily available starting materials. Page(s): 1489-1492

Synthesis of thiazol, thiazinan, thiadiazin, thiazolidin, triazine, thioxo-pyrimidin and thioxo-imidazolidine by inter-intra molecular cyclization

2018-12-01T00:00:00Z

Title: Synthesis of thiazol, thiazinan, thiadiazin, thiazolidin, triazine, thioxo-pyrimidin and thioxo-imidazolidine by inter-intra molecular cyclization Authors: Zade, Mangesh N; Katiya, Manish M; Deotale, Vinod D; Sontakke, Madhuri M; Dhonde, Madhukar G; Berad, Baliram N Abstract: Syntheses of five and six membered heterocyclic derivatives by the reaction of disubstituted thiocarbamides with inter-intramolecular cyclizations in catalyst free condition have been reported. The simple product isolation without column, good yields under mild condition, and applicable green matrix are the advantages of present protocol. Page(s): 1493-1500

Synthesis of new scaffolds of isoxazolidine derivatives from dihydrofuran via 1,3-dipolar cycloaddition reactions under solvent free conditions

2018-12-01T00:00:00Z

Title: Synthesis of new scaffolds of isoxazolidine derivatives from dihydrofuran via 1,3-dipolar cycloaddition reactions under solvent free conditions Authors: Chakraborty, Bhaskar; Chettri, Esmita Abstract: Synthesis of a new class of isoxazolidine derivatives have been reported from dihydrofuran under solvent free conditions via 1,3-dipolar cycloaddition reactions. The new cycloadducts have been found to have good synthetic potentiality as they could be easily functionalized into 1,3-amino alcohols. High selectivity, good to excellent yields, greener approach and good synthetic potentiality are the important features in these syntheses. Page(s): 1501-1508

Synthesis of some new class of isoxazoline derivatives and their functionalization to 1,3-amino ketones: A new approach

2018-12-01T00:00:00Z

Title: Synthesis of some new class of isoxazoline derivatives and their functionalization to 1,3-amino ketones: A new approach Authors: Chakraborty, Bhaskar; Rai, Neelam Abstract: Synthesis of few new scaffolds for isoxazolidine derivatives have been reported from amino nitrones in solvent free conditions. These new molecules are further functionalized into synthetically more important 1,3-amino ketone derivatives. Significant rate acceleration, high yield of products in solvent free conditions and atom efficiency are the salient features observed in these syntheses. Page(s): 1509-1513