Combination claisen-nitrile oxide annulation. A strategy for ring construction with rigid stereocontrol dictated by an allylic hydroxyl group.
作者:Dennis P. Curran、Patricia B. Jacobs
DOI:10.1016/s0040-4039(00)94771-3
日期:——
A new method for annulation of rings onto existing allylic alcohol derivatives is presented. The sequence involves Claisen rearrangement followed by nitrile oxide-olefin cycloaddition. Control of relevant stereochemistry is emphasized.
OXIDATION OF OLEFINS BY MANGANESE(III) ACETATE IN A PROPIONIC ACID SOLVENT. FORMATION OF PROPIONIC ACID DERIVATIVES
作者:Masayoshi Okano
DOI:10.1246/cl.1973.165
日期:1973.2.5
Oxidation of olefins by manganese(III) acetate was carried out using propionic acid as a solvent. The oxidation products obtained were propionic acid derivatives such as 2-methyl-4-propanoyloxyalkanoic acids, γ-lactones, alkanoic or alkenoic acids and propanoyloxyalkenes. Of these products, 2-methyl-4-propanoyloxyalkanoic acids underwent thermal cracking with ease to decompose into corresponding γ-lactones
Reactions du n=chloroparatoluenesulfonamidate de sodium (chloramine t) sur les olefines en miliu acide organique
作者:Bernard Damin、Jacques Garapon、Bernard Sillion
DOI:10.1016/s0040-4039(00)77816-6
日期:1980.1
Vic. chloro-acetoxy and vic. chloro-tosylamino alcanes are the main products of the electrophilic reaction of chloramine T on olefins in acetic acid. The stereochemistry of the acetoxy chloration of the 2-butenes and cyclohexene is trans.
Polymerizable monomer, polymer compound, biological electrode composition, biological electrode, and method for producing biological electrode
申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US10726967B2
公开(公告)日:2020-07-28
The present invention provides: a biological electrode composition formable a living body contact layer for a biological electrode which is excellent in conductivity and biocompatibility, as well as light in the weight thereof and producible at a low cost, and in addition, which does not cause a significant decrease in the conductivity thereof regardless of under a water-wet condition and a dry condition; a polymer compound which can be suitably used for the biological electrode composition; a polymerizable monomer suitable as a raw material of the polymer compound; a biological electrode having a living body contact layer formed of the biological electrode composition; and a method for producing the same; and wherein, the polymerizable monomer is represented by the following general formula (1).
Diastereoselectivity in the Epoxidation of Substituted Cyclohexenes by Dimethyldioxirane<sup>1</sup><sup>,</sup><sup>2</sup>
作者:Robert W. Murray、Megh Singh、Brian L. Williams、Hazel M. Moncrieff
DOI:10.1021/jo951864j
日期:1996.1.1
Three series of compounds based on the cyclohexene framework. have been epoxidized by dimethyldioxirane. A pronounced dependence of epoxide diastereoselectivity on substituent has been observed. In addition there is a solvent influence on this stereoselectivity. The results have been explained by invoking steric, H-bonding, and dipole-dipole influences on the epoxide stereochemistry.