963-03-1Relevant articles and documents
Mechanosynthesis of pharmaceutically relevant sulfonyl-(thio)ureas
Tan, Davin,?trukil, Vjekoslav,Mottillo, Cristina,Fri??i?, Tomislav
supporting information, p. 5248 - 5250 (2014/05/06)
We demonstrate the first application of mechanochemistry to conduct the synthesis of sulfonyl-(thio)ureas, including known anti-diabetic drugs tolbutamide, chlorpropamide and glibenclamide, in good to excellent isolated yields by either stoichiometric base-assisted or copper-catalysed coupling of sulfonamides and iso(thio)cyanates. the Partner Organisations 2014.
Lewis Acid Catalysed Preparation of some Carbamates and Sulphonylureas. Application to the Determination of Enantiomeric Purity of Chiral Alcohols
Irie, Hiroshi,Nishimura, Masataka,Yoshida, Morihiro,Ibuka, Toshiro
, p. 1209 - 1210 (2007/10/02)
Lewis acids such as boron trifluoride-diethyl ether and aluminium chloride catalyze the reaction of alcohols and sulphonamides with isocyanates, affording carbamates and sulphonylureas, respectively, in acceptable yield.Applied to the formation of diastereoisomeric carbamates from chiral alcohols using Pirkle's reagents, , this technique provides a convenient method for determination of enantiomeric purity.