A facile one-pot synthesis of mono(hpp)- or di(hpp)-substituted N -heterocyclic ligands from halogenated N -heterocycles and 1,3,4,6,7,8-hexahydro-2 H -pyrimido[1,2- a ]pyrimidine (H-hpp) is presented. N , N -Bidentate and N , N , N -tridentate ligands incorporating electron-donating and electron-withdrawing substituents can also be readily synthesized using this method.
从卤化 N-杂环和 1,3,4,6,7,8-六氢-2 H-嘧啶 [1, 2-a]嘧啶(H-hpp)被呈现。N , N - 二齿和 N , N , N - 三齿配体结合给电子和吸电子取代基也可以使用这种方法容易地合成。