disubstituted allyls bearing a 1-acetoxy substituent existed as mixtures of both possible syn/anti isomers and the syn/syn and anti/anti isomers. The conformation and configuration of the isomers was confirmed through nOe studies on several complexes and by X-ray crystallography in the case of [TpMo(CO)2[η-(1,2,3)-(±)-(1R,2S,3S)-1-methoxy-2-cyclohexen-1-yl].
环状和无环二羰基[氢(1-
吡唑基)borato] [η 3 -1-( (叔丁基二甲基
硅烷基)氧基)烯丙基]
钼络合物和各种它们的1-乙酰氧基和1-烷氧基(RO =的MeO,我-制备了PrO)类似物,并通过IR和1 H和13 C NMR光谱进行了表征,对于[TpMo(CO)2 [η-(1,2,3)-(±)-(1 R,2 S),3 S)-1-甲氧基-2-
环己烯-1-基],通过X-射线晶体学测定。这些络合物是通过叔丁基二甲基甲
硅烷基
氯促进α,β-不饱和醛以及非环状和环状酮向(
DMF)的氧化加成而以中等至优异的收率制备的3 Mo(CO)3,然后用氢三(1-
吡唑基)
硼酸钾进行
配体复分解。1-叔丁基二甲基甲
硅烷氧基-和1-甲氧基-和1-异丙氧基-取代的无环配合物仅作为顺式异构体形成。然而,将1-乙酰氧基类似物异构化为顺式和反式异构体的热力学混合物,其中反式异构体占主导地位(3.7:1)。1-((叔丁基二