Reaction of isatoic anhydride with aniline derivatives gave 2-amino-N-（aryl）benzamides.The latters reacted with phenyli-sothiocyanate in the presence of heteropolyacids in various solvents which afforded 3-（aryl）-...Reaction of isatoic anhydride with aniline derivatives gave 2-amino-N-（aryl）benzamides.The latters reacted with phenyli-sothiocyanate in the presence of heteropolyacids in various solvents which afforded 3-（aryl）-2-thioxo-2,3-dihydroquinazolin- 4（1H）-one derivatives.The effects of various heteropolyacids including Preyssler and Keggin on the yields and reaction times have been investigated.展开更多
文摘Reaction of isatoic anhydride with aniline derivatives gave 2-amino-N-（aryl）benzamides.The latters reacted with phenyli-sothiocyanate in the presence of heteropolyacids in various solvents which afforded 3-（aryl）-2-thioxo-2,3-dihydroquinazolin- 4（1H）-one derivatives.The effects of various heteropolyacids including Preyssler and Keggin on the yields and reaction times have been investigated.
