cyclopentanecarbaldehyde 2,4-dinitrophenylhydrazone;cyclopentylmethanal-2,4-dinitrophenylhydrazone;cyclopentanecarbaldehyde-(2,4-dinitro-phenylhydrazone);Cyclopentancarbaldehyd-(2,4-dinitro-phenylhydrazon);2,4-Dinitro-phenylhydrazon des Cyclopentancarboxaldehyd;C-Formyl-cyclopentan-(2,4-dinitro-phenylhydrazon);N-(cyclopentylmethylideneamino)-2,4-dinitroaniline
Thallium(I) carboxylate modification of the hunsdiecker reaction
作者:Richard C. Cambie、Rodney C. Hayward、Jeffrey L. Jurlina、Peter S. Rutledge、Paul D. Woodgate
DOI:10.1039/p19810002608
日期:——
Treatment of a Thallium(I) carboxylate with 1 molar equivalent of bromine gives the corresponding thallium(III) carboxylate dibromide. High yields of primary alkyl bromides are obtained if the thallium(III) carboxylate dibromide is treated with 0.5 mol equiv. of bromine in refluxing carbon tetrachloride. Pyrolysis of the thallium(III) derivative in the absence of added bromine gives a low yield of
A highly anti‐Markovnikov selective oxidation of alkenes based on in situ generated hypoiodite catalysis in aqueous micellar media under mild conditions has been described. This novel catalytic system realizes an efficient synthesis of aldehydes from alkenes in an economically viable and environmentally safe fashion. The preliminary mechanistic studies suggest that the reaction proceeds via tandem
Oligomeric Iodosylbenzene Sulfate: A Convenient Hypervalent Iodine Reagent for Oxidation of Organic Sulfides and Alkenes
作者:Mehman Yusubov、Viktor Zhdankin、Rosa Yusubova、Tatyana Funk、Ki-Whan Chi
DOI:10.1055/s-0029-1216870
日期:2009.8
Oligomeric iodosylbenzene sulfate, (PhIO)3˙SO3, which can be formally considered as a partially depolymerized activated iodosylbenzene, is a readily available, stable, and water-soluble hypervalent iodine reagent that is useful for the oxidation of sulfides or alkenes. Furthermore, this reagent can be conveniently generated in situ from (diacetoxyiodo)benzene and sodium bisulfate and used without isolation
低聚亚碘酰苯硫酸根,(PhIO)3 SO 3形式上可以被认为是部分解聚的活化碘代苯,是一种易于获得,稳定且水溶性的高价碘试剂,可用于硫化物或烯烃的氧化。此外,该试剂可以方便地从(二乙酰氧基碘)苯和硫酸氢钠原位产生,并且无需在水溶液中或在无溶剂条件下进行氧化分离就可以使用。碘代碘代苯硫酸盐在室温下与有机硫化物原位反应可提供高收率的亚砜,而不会过度氧化成砜,并且该反应与底物分子中存在羟基,双键,苄基碳原子,羧酸酯基团相容以及各种取代的苯环。 氧化-碘-亚砜-碘基苯-(二乙酰氧基碘)苯-高价碘
Hypoiodite reaction: mechanism of the reaction of mercury(<scp>II</scp>) oxide–iodine with olefins
作者:Craig P. Forbes、André Goosen、Hugh A. H. Laue
DOI:10.1039/p19740002346
日期:——
Evidence is presented that the reaction of mercury(II) oxide–iodine with olefins in aprotic solvents proceeds through ‘iodine oxide’. From a study of the products, which include rearranged carbonyl compounds, vinyl iodides, and 2,2′-di-iodo-ethers, and from an investigation of the reactions of epoxides and iodohydrins with morcury(II) oxide–iodine, it is concluded that ‘iodine oxide’ addition occurs