Les fluorosulfates de polyfluoroalkyle R f OSO 2 F [R f =CF 3 CH 2 et (CF 3 ) 2 CH] reagissent avec les 胺,les alcools et les alcoolates倒入donner de nouveaux酰胺硫酸盐脱多氟烷基硫酸盐和二烷基化物。La liaison S-O de ces fluorosulfates de polyfluoroalkyle reste 完整存在 de 亲核试剂 durs。Cependant avec le methanethiol on obtient lesulfe demethyle et de trifluoro-2,2,2ethyle
New sulfuryl fluoride-derived alkylating reagents for the 1,1-dihydrofluoroalkylation of thiols
作者:Paul J. Foth、Frances Gu、Trevor G. Bolduc、Sahil S. Kanani、Glenn M. Sammis
DOI:10.1039/c9sc03570b
日期:——
Herein, we report a new method for the one-pot synthesis of 1,1-dihydrofluoroalkyl sulfides by bubbling sulfuryl fluoride (SO2F2) through a solution of the corresponding alcohol and thiol. The reaction proceeds through a new class of bis(1,1-dihydrofluoroalkyl) sulfate reagents, to afford the desired 1,1-dihydrofluoroalkyl sulfides in 55-90% isolated yields. The bis(1,1-dihydrofluoroalkyl) sulfates
NN-Dimethylsulphamate esters react with methyl fluorosulphate to give trimethylammoniosulphateesters; the phenyl ester (2) is readily characterized, but alkyl esters immediately give fluorosulphate esters or elimination products, showing that trimethylammonio-sulphate is a very powerful leaving group.
NN -Dimethylsulphamate酯用甲基fluorosulphate得到trimethylammoniosulphate酯反应; 苯基酯(2)易于表征,但是烷基酯会立即生成氟代硫酸酯或消除产物,表明三甲基硫酸铵是一个非常强大的离去基团。
Zirconium Hydroaminoalkylation. An Alternative Disconnection for the Catalytic Synthesis of α-Arylated Primary Amines
作者:Ana Koperniku、Paul J. Foth、Glenn M. Sammis、Laurel L. Schafer
DOI:10.1021/jacs.9b10465
日期:2019.12.4
Primaryamine products have been prepared using zirconium catalyzed hydroaminoalkylation of alkenes with N-silylated benzylamine substrates. Catalysis using commercially available Zr(NMe2)4, affords an alternative disconnection to access α-arylated primaryamines upon aqueous work-up. Substrate dependent regio- and diastereoselectivity of the reaction is observed. Bulky substituents on the terminal