Peroxide-induced α-elimination of organic halides from organotellurium(<scp>IV</scp>) halides
作者:Sakae Uemura、Shin-Ichi Fukuzawa
DOI:10.1039/c39800001033
日期:——
Treatment of organotellurium(IV) halides with t-butyl hydroperoxide in 1,4-dioxan, acetic acid, or acetonitrile affords the corresponding organichalides in good to moderate yields presumably as the result of a 1,2-halogen shift.
Selective Conversion of Epoxides to<i>vic</i>-Halo Alcohols and Symmetrical or Unsymmetrical Dihalides by Triphenylphosphine/2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in the Presence of Quaternary Ammonium Halides
A new method is described for the efficient and selective conversion of epoxides to vic-halo alcohols or symmetrical and unsymmetrical dihalides using PPh 3 /DDQ/F 4 NX (X = Cl, Br, I) as a mixed-reagent system.
Alkoxythiocyanation and Alkoxyiodination of Olefins with Copper(II) Salts
作者:Akira Onoe、Sakae Uemura、Masaya Okano
DOI:10.1246/bcsj.47.2818
日期:1974.11
alkoxythiocyano- and alkoxyiodoalkanes is described. The reaction of olefins with copper(II) salts, such as chloride, bromide and sulfate, and potassium thiocyanate or iodide in alcohols readily affords the compounds in good yields. Fromvinyl acetates, alkyl vinylethers and α,β-unsaturated aldehydes, the products are obtained in the form of dialkyl acetals. The reaction mechanism is discussed.
描述了一种简单方便的制备邻位烷氧基硫氰基和烷氧基碘代烷烃的方法。烯烃与铜 (II) 盐(例如氯化物、溴化物和硫酸盐)以及硫氰酸钾或碘化物在醇中的反应很容易以良好的收率提供这些化合物。由乙酸乙烯酯、烷基乙烯基醚和α,β-不饱和醛得到二烷基缩醛形式的产物。讨论了反应机理。
On the structure of tert-butyl hypoiodite
作者:D. D. Tanner、G. C. Gidley、N. Das、J. E. Rowe、A. Potter
DOI:10.1021/ja00330a038
日期:1984.9
On donne trois methodes de preparation de ce compose: reaction de l'hypochlorite de t-butyle avec l'iode, reaction de l'hypochlorite de t-butyle avec les iodures metalliques et reaction du t-butylate de K avec l'iode. Reactivite de l'hypoiodite de t-butyle
在donne trois methodes de制备de ce 组成:反应de l'次氯酸盐de t-butyle avec l'iode,reaction de l'次氯酸盐de l'次氯酸盐de t-butyle avec les iodures metalliques和reaction du t-butylate de K avec l'iode Reactive de l'hypoiodite de t-butyle
The Chlorobromination of Olefins with Antimony (III and V) Chlorides
作者:Sakae Uemura、Akira Onoe、Masaya Okano
DOI:10.1246/bcsj.47.143
日期:1974.1
By the reaction of olefins with equimolar mixtures of SbCl5 and Br2 or LiBr, and of SbCl3 and Br2, in carbon tetrachloride, various bromochloroalkanes were obtained in good yields. The mixtures of certain metal chlorides of the Lewis acid type (e.g., FeCl3, SnCl4, and TiCl4) and Br2 could also be used as chlorobrominating agents, but these mixtures were found to be inferior to the SbCl5–Br2 mixture