82486-29-1Relevant academic research and scientific papers
Catalytic chalcogenylation under greener conditions: A solvent-free sulfur- and seleno-functionalization of olefins via I2/DMSO oxidant system
Vieira, André A.,Azeredo, Juliano B.,Godoi, Marcelo,Santi, Claudio,Da Silva Júnior, Eufranio N.,Braga, Antonio L.
, p. 2120 - 2127 (2015/05/12)
Herein, we report a solvent- and metal-free methodology for the alkoxy-chalcogenylation of styrenes, using molecular iodine as a catalyst, DMSO as a stoichiometric oxidant, and different nucleophiles under microwave irradiation. This eco-friendly approach afforded the desired products in good to excellent yields in only 10 min. In addition, using the same protocol, we carried out the cyclization reaction of relevant molecules, such as lapachol derivatives.
CATALYTIC OXIDATION OF OLEFINS USING DIPHENYL DITELLURIDE
Kambe, Nobuaki,Fujioka, Toyozo,Ogawa, Akiya,Miyoshi, Noritaka,Sonoda, Noboru
, p. 167 - 176 (2007/10/02)
Reaction of aliphatic olefins with tert-butyl hydroperoxide and diaryl ditellurides in the presence of sulfuric acid in refluxing methanol gave methoxytellurenylation products with high regioselectivity having the aryltelluro group on the terminal carbon in the case of terminal olefins.The stereochemistry of the product from cyclohexene was trans.Under similar conditions, aromatic substituted olefins afforded vic-dimethoxyl compounds in the presence of catalytic amount of diaryl ditelluride.In this reaction, molecular oxygen (or air) as well as peroxidesand peracids were found to be effective as the oxidizing agent.The catalytic oxidation of olefins reported here proceeded in net syn fashion probably via anti methoxytellurenylation followed by displacement of the phenyltelluro group by a methoxy group with inversion.
OXYTELLURATION OF OLEFINS TO (β-ALKOXY- AND β-HYDROXY-ALKYL)ARYLTELLURIUM DIHALIDES AND THEIR REACTIONS WITH REDUCING AGENTS AND AQUEOUS NaOH
Uemura, Sakae,Fukuzawa, Shin-Ichi,Toshimitsu, Akio
, p. 203 - 216 (2007/10/02)
Treatment of olefinic hydrocarbons with phenyltellurium tribromide or a mixture of diphenylditelluride and bromine in alcohol affords (β-alkoxyalkyl)phenyltellurium dibromides in fair to good yield (alkoxytelluration of olefins).Various aryltellurium tric
A FACILE METHOD FOR OXYTELLURATION OF OLEFINS
Uemura, Sakae,Fukuzawa, Shin-ichi,Toshimitsu, Akio,Okano, Masaya
, p. 1177 - 1180 (2007/10/02)
Treatment of olefins with phenyltellurium(II) or (IV) species in alcohol at room to reflux temperature for 1-24 h produces the corresponding (2-alkoxyalkyl)phenyltellurium dihalides in good yields, the reaction being trans-stereoselective and highly regioselective.
