ligand. The in situ generated catalyst has been applied to catalytic transformations of alkynes and propargylic alcohols: propargylation of furans, propargyl ether synthesis from internal and terminal propargylic alcohols with propargyl, homopropargyl and allyl alcohols, selective dimerization of phenylacetylene into E-enyne, and propargyl alcohol rearrangement into α,β-unsaturated aldehydes and ketones
[(对伞花基)RuX(CO)(PR 3)] [OTf](R = Ph,Cy; X = Cl,OTf)类型的单核络合物促进
呋喃与炔
丙醇的直接催化炔丙基化。这些前体是通过活化炔
丙醇从[(对-cymene)RuCl(OTf)(PR 3)]原位产生的,导致经由亚烯基和烯基-羟基卡宾中间体形成羰基
配体。催化活性物质的产生需要短的初始热活化以诱导对-异丙基
配体的去配位。在原位生成的催化剂已用于
炔烃和炔
丙醇的催化转化:
呋喃的炔丙基化,内部和末端炔
丙醇与炔丙基,高炔丙基和烯丙基醇的
炔丙基醚合成,
苯乙炔的选择性二聚为E-烯炔和炔
丙醇重排为α ,β-不饱和醛和酮通过Meyer-Schuster重排。含有内部CC键的炔
丙醇的炔丙基化表明通过Nicholas型中间体(
金属稳定的炔丙基阳离子)的活化。