New Chiral Hypervalent Iodine Compounds in Asymmetric Synthesis
摘要:
The synthesis of new chiral hypervalent iodine compounds 3 and their use in asymmetric oxidative functionalizations are described. The substituents in the chiral moiety and the stereoelectronic properties of the reagents 3, as well as the reaction conditions, have been optimized. Chiral hypervalent iodine compounds 3 have been investigated in the asymmetric dioxytosylation of styrene and in the alpha-oxytosylation of propiophenone as test reactions. X-ray structural analysis of some reagents shows an interaction between the chiral moiety and the iodine resulting in stereoselectivities up to 53% ee in the products.
A general method for the preparation of zirconocene complexes of substituted benzynes: in situ generation, coupling reactions, and use in the synthesis of polyfunctionalized aromatic compounds
作者:Stephen L. Buchwald、Brett T. Watson、Robert T. Lum、William A. Nugent
DOI:10.1021/ja00257a038
日期:1987.11
Obtention de methoxy-, iodo- et (methoxyiodo) alcanophenones, de benzisothiazoles-1,2, et de bicyclo [4.2.0] octatrienes-1,3,5
获得甲氧基-、碘-和(甲氧基碘)alcanophenones, de benzisothiazoles-1,2, et de bicyclo [4.2.0]octrienes-1,3,5
Zirconocene(iso-butyl) chloride: In situ generation of a zirconocene(methyl) chloride equivalent for use in organic synthesis
作者:Kenneth J. Barr、Brett T. Watson、Stephen L. Buchwald
DOI:10.1016/0040-4039(91)80059-f
日期:1991.9
Zirconocene(iso-butyl) chloride, 1, which can be generated in situ from commercially available, inexpensive, and air-stable zirconocene dichloride, can function as a zirconocene(methyl) chloride equivalent.