作者:Inagaki, Sho、Omichi, Riko、Yamazaki, Kei、Shibuta, Yuzuka、Kawano, Tomikazu
DOI:10.1021/acs.joc.4c00090
日期:——
S-methylation/intramolecular cyclization of γ-sulfanylamide is depicted. Different methylating reagents were successfully employed for S-methylation, depending on the substituent pattern of the amide in the starting γ-sulfanylamides; trimethyloxonium tetrafluoroborate was used for N-aryl substituted γ-sulfanylamides, and the combination of methyl iodide and silver(I) tetrafluoroborate was used for N-alkyl
描述了 γ-磺酰胺的S-甲基化/分子内环化。根据起始γ-磺酰胺中酰胺的取代基模式,成功地使用不同的甲基化试剂进行S-甲基化; N-芳基取代的γ-磺酰胺使用四氟硼酸三甲基氧鎓, N-烷基取代的γ-磺酰胺使用甲基碘和四氟硼酸银(I)的组合。当所得锍盐用DBU处理时,它顺利地进行分子内环化,生成一系列N-芳基、 N-烷基、 N,N-二烷基或N-烷基-N-芳基取代的5-氨基-3( 2H) )-呋喃酮的定量产率为 55%。