Treatment of 2,5,6-tri-substituted tetrahydro-4-oxopyran-3-carboxylic esters with Me3SiCl–NaI reagent in DMF at 120 °C gave cyclopentenone derivatives via the Nazarov-type cyclization subsequent to possible dehydration.
2,5,6-三取代四氢-4-氧代
吡喃-3-
羧酸酯在
DMF中120°C下用Me3SiCl-NaI试剂处理,在可能的脱
水后通过Nazarov型环化反应得到
环戊烯酮衍
生物。