Allylation of ketones with a ferrocene-based planar chiral Lewis acid.
نویسندگان
چکیده
منابع مشابه
Synthesis and Lewis acid properties of a ferrocene-based planar-chiral borenium cation.
The first planar chiral ferrocenylborenium species (pR)-3(+) is obtained in the enantiopure form by halide abstraction from the corresponding chloroborane adduct (pR)-2 using Krossing's salt. Competition experiments suggest that the Lewis acidity of (pR)-3(+) is higher than that of B(C6F5)3 towards anions and slightly lower towards neutral Lewis bases. The ferrocenylborenium species (pR)-3(+) i...
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Reactions of N-isocyaniminotriphenylphosphorane with a cyclic ketone in the presence of ferrocene carboxylic acid proceeded smoothly at room temperature and in neutral conditions to afford ferrocene-containing 1,3,4-oxadiazole derivatives in high yields. The reaction proceeded smoothly and cleanly under mild conditions and no side reactions were observed. The structures of the products were ded...
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ورودعنوان ژورنال:
- Angewandte Chemie
دوره 47 6 شماره
صفحات -
تاریخ انتشار 2008