作者:Roger Tull、Robert C. O'Neill、Edmund P. McCarthy、James J. Pappas、John M. Chemerda
DOI:10.1039/j39670000701
日期:——
1-Alkyl-3-arylsulphonylureas have been synthesised by the reaction of sym-1,3-dialkylureas with aryl sulphonamides. The mixed sulphonylureas are formed in good yield by virtue of the symmetry possessed by the dialkylurea component.
Synthesis of fluorine-18 labeled sulfonureas as ?-cell imaging agents
作者:Grace G. Shiue、Ralf Schirrmacher、Chyng-Yann Shiue、Abass A. Alavi
DOI:10.1002/jlcr.438
日期:2001.2
F]fluorobenzenesulfonamide with butyl isocyanate in the presence of either copper (I) chloride or borontrifluoride etherate complex in CH 3 CN followed by HPLC purification yielded compound 3a in an overall yield of 1-2% with a synthesis time of 120 minutes from EOB. Compound 6a was synthesized by alkylation of the corresponding hydroxy precursor (5) with [ 18 F]fluoroethyl tosylate in DMSO at 120°C for 20 minutes