作者:Kenji Yamagata、Fumi Okabe、Hiroshi Maruoka、Yoshinobu Tagawa
DOI:10.1002/jhet.5570420531
日期:2005.7
2-Amino-4,5-dihydro-3-methanesulfonylfurans 7 and 2-amino-4,5-dihydro-3-methanesulfonylthiophenes 8 were prepared by deamidation of tetrahydro-2-imino-3-methanesulfonyl-3-furancarboxamides 3 and of tetrahydro-2-imino-3-methanesulfonyl-3-thiophenecarboxamides 4 with bases. Compounds 3 and 4 were obtained by reaction of 2-amino-4,5-dihydro-3-furancarboxamides 1 and 2-amino-4,5-dihydro-3-thio-phenecarboxamides
2-氨基-4,5-二氢-3- methanesulfonylfurans 7和2-氨基-4,5-二氢-3- methanesulfonylthiophenes 8是由四氢-2-亚氨基-3-甲磺酰基-3- furancarboxamides的脱酰胺化制备3的和具有碱的四氢-2-亚氨基-3-甲磺酰基-3-噻吩羧酰胺4。化合物3和4是在三乙胺存在下,使2-氨基-4,5-二氢-3-呋喃甲酰胺1和2-氨基-4,5-二氢-3-硫代苯甲酰胺2与甲磺酰氯反应制得的。