Reactions and characterization of allylic and related zirconium reagents (allenic and γ-alkoxyallylic zirconiums) generated by treatment of allylic and/or propargylic ethers with a zirconocene-butene complex (“Cp2Zr”) are described.
Generation and reactions of difluorocyclopropyl anion
作者:Akira Shibuya、Sylke Pietz、Takeo Taguchi
DOI:10.1016/s0040-4039(97)01195-7
日期:1997.8
Reaction of 1-trimethylsilyl-2,2-difluorocyclopropane derivative with aldehydes in the presence of a catalytic amount of TBAF (4 mol%) provides the corresponding cyclopropylcarbinols via cleavage of the carbon-silicon bond.
E-Vinylsilanes were synthesized regioselectively from olefins with vicinalsilyl and stannylsubstituents, prepared from the corresponding terminal alkynes, by destannylation with HI.
E-乙烯基硅烷是由具有连位甲硅烷基和甲锡烷基取代基的烯烃区域选择性合成的,该烯烃由相应的末端炔烃通过用 HI 脱烷基化制备。
Enantio- and Stereoselective Syntheses of Monodeuterium-labeled Glycerols
作者:Kenji Yagi、Hideaki Oikawa、Akitami Ichihara
DOI:10.1271/bbb.61.1038
日期:1997.1
An efficient method is described for synthesizing and four possible diastereomers of stereochemically defined monodeuterated glycerols by utilizing Sharpless asymmetric dihydroxylation.