ሦስተኛው ረድፍ እኩል አንድ ተተኳይ ተዮሆነስ, ፓትሮል, ፍራንስ ከ 1,4-dicarbonyl ውሕዶች አጠቃላይ ዝግጅት ያሳያል.
Umgca wesithathu we-equation omnye ubonisa ukulungiswa ngokubanzi kwama-thiophenes, ama-pyrroles, ama-furans avela kwi-1,4-dicarbonyl.