Bis(hexafluoroacetylacetonato)copper(II) is a very effective catalyst for the preparation of ylides from diazo compounds under mild conditions even down to room temperature. It appears that the lower the temperature at which the reaction can be conducted the purer the product which results. Its use in preparing arsonium, stibonium, bismuthonium, sulphonium, telluronium, and thiouronium ylides is described.
双(
六氟乙酰丙酮)
铜(II)是一种非常有效的催化剂,可在温和的条件下,甚至在室温下,从重氮化合物中制备酰化物。似乎反应温度越低,生成的产物越纯。 本文介绍了它在制备
砷铵、
锑铵、
铋铵、
硫铵、
碲铵和
硫鎓酰化物中的应用。