A Convenient Access to Perfluoroalkyl Selenoethers and Selenyl Chlorides
作者:Emmanuel Magnier、Erica Vit、Claude Wakselman
DOI:10.1055/s-2001-16050
日期:——
The treatment of diselenides with different perfluoroalkyl iodides in the presence of sodium hydroxymethanesulfinate led to perfluoroalkyl selenides in fair to good yields. The reaction between benzyl perfluorooctyl selenide and chlorine, or sulfuryl chloride, gave rise to the corresponding selenyl chloride and represents an easy route to perfluoroalkylselenyl chlorides.
perfluoroalkyl-sulfenylation and perfluoroalkyl-selenation were less effective. The perfluoroalkyl-telluration proceeds mainly via both SRN1process and photochemical addition of the in situ formed perfluoroalkyl phenyl telluride (RfTePh). The efficiency of the chalcogenolate anions for perfluoroalkyl-chalcogenation was found to be the order of PhS− < PhSe− < PhTe−.
Nucleophilic Perfluoroalkylation of Aldehydes, Ketones, Imines, Disulfides, and Diselenides
作者:Chaya Pooput、William R. Dolbier,、Maurice Médebielle
DOI:10.1021/jo060250j
日期:2006.4.1
trifluoromethylation, the perfluoroalkyl anion reagents created by mixing C2F5I and n-C4F9I with tetrakis(dimethylamino)ethylene (TDAE) were effective in their nucleophilic reactions with aldehydes, ketones, imines, disulfides, and diselenides. Irradiation proved beneficial in the aldehyde and ketone reactions.
使用类似于为亲核三氟甲基化开发的方法,通过将C 2 F 5 I和n -C 4 F 9 I与四(二甲基氨基)乙烯(TDAE)混合而产生的全氟烷基阴离子试剂在与醛,酮的亲核反应中有效,亚胺,二硫化物和二硒化物。辐射被证明对醛和酮反应有利。
Perfluoroalkyl-selenation of olefins has been performed by the reaction of diphenyl diselenide with sodium borohydride followed with perfluoroalkyl halides (RfX) and olefins where one electron transfer from phenylseleno anion to RfX occurs, generating perfluoroalkyl and phenylseleno radicals.