23766-13-4Relevant academic research and scientific papers
O -iodoxybenzoic acid mediated oxidative desulfurization initiated domino reactions for synthesis of azoles
Chaudhari, Pramod S.,Pathare, Sagar P.,Akamanchi, Krishnacharaya G.
experimental part, p. 3716 - 3723 (2012/06/16)
A systematic exploration of thiophilic ability of o-iodoxybenzoic acid (IBX) for oxidative desulfurization to trigger domino reactions leading to new methodologies for synthesis of different azoles is described. A variety of highly substituted oxadiazoles, thiadiazoles, triazoles, and tetrazoles have been successfully synthesized in good to excellent yields, starting from readily accessible thiosemicarbazides, bis-diarylthiourea, 1,3-disubtituted thiourea, and thioamides.
The rapid preparation of 2-aminosulfonamide-1,3,4-oxadiazoles using polymer-supported reagents and microwave heating
Baxendale, Ian R.,Ley, Steven V.,Martinelli, Marisa
, p. 5323 - 5349 (2007/10/03)
Herein, we report on the preparation of a library of 5-substituted-2-amino- 1,3,4-oxadiazoles and the corresponding thiadiazole analogues. Presented is a one-pot preparation of the 2-aminosulfonylated analogues through a three component coupling of an acylhydrazine, an isocyanate and sulfonyl chloride promoted by a polymer-supported phosphazine base under microwave dielectric heating. Also described is the optimization process and details pertaining to the elucidation of the reaction products.
