Efficient Fragmentation of the Tertiary Cyclopropanol System: Oxidation of 1-(Trimethylsiloxy)bicyclo[n.1.0]alkanes and Analogues By Using Phenyliodine(III) Diacetate
The reactions of trialkylstannylmethyllithium with α,β-epoxyketones afforded mainly cyclopropanols, while α-chloro ketones afforded allyl alcohols and/or cyclopropanols, in varying amounts depending upon the molar ratio of the reagent to the substrate.
Generation of<i>β</i>-Carbonyl Radicals from Cyclopropanol Derivatives by the Oxidation with Manganese(III) 2-Pyridinecarboxylate and Their Reactions with Electron-Rich and -Deficient Olefins
Various β-carbonyl radicals are generated oxidatively from cyclopropanol derivatives by the use of manganese(III) 2-pyridinecarboxylate (Mn(pic)3). These β-carbonyl radicals react with electron-rich olefins such as conjugated silyl enol ethers, a ketene thioacetal, a ketene dithioacetal, and a vinyl ether intermolecularly to give crossed-addition products in good yield. Furthermore, the combined use
Manganese-Catalyzed Electrochemical Deconstructive Chlorination of Cycloalkanols via Alkoxy Radicals
作者:Benjamin D. W. Allen、Mishra Deepak Hareram、Alex C. Seastram、Tom McBride、Thomas Wirth、Duncan L. Browne、Louis C. Morrill
DOI:10.1021/acs.orglett.9b03652
日期:2019.11.15
A manganese-catalyzedelectrochemicaldeconstructivechlorination of cycloalkanols has been developed. This electrochemical method provides access to alkoxyradicals from alcohols and exhibits a broad substrate scope, with various cyclopropanols and cyclobutanols converted into synthetically useful β- and γ-chlorinated ketones (40 examples). Furthermore, the combination of recirculating flow electrochemistry
A new route to seven-and eight-membered carbocycles
作者:Jong Sun U、Jinhwa Lee、Jin Kun Cha
DOI:10.1016/s0040-4039(97)01142-8
日期:1997.7
A facile method for the construction of bicyclo[6.3.0]undecane or bicyclo[5.3.0]decane skeleton has been developed by the tandem application of the intramolecular Kulinkovich cyclopropanation of ω-vinylesters and oxidation of the resulting cyclopropanols.
The reaction of carbonyl compounds with diiodomethane in the presence of samarium: Novel syntheses of iodohydrins and cyclopropanols
作者:Tsuneo Imamoto、Toshiaki Takeyama、Hiroyasu Koto
DOI:10.1016/s0040-4039(00)84764-4
日期:1986.1
The iodomethylation of carbonyl compounds giving iodohydrins has been achieved under ordinary conditions by the use of diiodomethane and samarium. A novel synthesis of cyclopropanols from α-haloketones or 1,2-dibenzoylethane is also described.