Hantzsch 1,4-dihydropyridine (HEH) was used to realize the selective reduction of the exocyclic double bond of 4-arylmethylene- and 4-alkylidene-4H-isoxazol-5-ones and 4-arylmethylene-4H-pyrazol-5-ones.
Hantzsch 1,4-
二氢吡啶(HEH)用于选择性还原4-芳基亚甲基和4-烷亚基-4H-
异恶唑-5-酮和4-芳基亚甲基-4H-
吡唑-5-酮的外环双键。