[EN] LOW REACTIVITY HYDROCARBON DISPERSING AGENTS IN THE AQUEOUS POLYMERIZATION OF FLUOROPOLYMERS [FR] AGENTS DISPERSANTS D'HYDROCARBURES À FAIBLE RÉACTIVITÉ DANS LA POLYMÉRISATION AQUEUSE DE FLUOROPOLYMÈRES
Novel synthetic route to aryl alkanes from aromatic aldehydes and ketones. Novel geminal dialkylation of the carbonyl group of aromatic aldehydes and ketones
作者:Alain Krief、M. Clarembeau、Ph. Barbeaux
DOI:10.1039/c39860000457
日期:——
Benzyl-lithiums, readily available from benzyl methyl selenides and alkyl-lithiums, are efficiently alkylated; this reaction allows the geminaldialkylation of the carbonylgroups of aromaticaldehydes and ketones and the geminal aryl–alkylation of aliphatic analogues.
Thermolysis of Free-Radical Initiators: <i>tert</i>-Butylazocumene and Its 1,3- and 1,4-Bisazo and 1,3,5-Trisazo Analogues
作者:Paul S. Engel、Li Pan、Yunming Ying、Lawrence B. Alemany
DOI:10.1021/ja003914u
日期:2001.4.1
as a "one-radical" initiator of styrene polymerization. The ABNO-trapped cumyl radical 29 is a particularly stable trialkylhydroxylamine, whose thermolysis half-life is 2.1 h at 150 degrees C. Taking advantage of this stability, we trapped the cumyl radical centers from 7 to afford tris adduct 32a. While the behavior of the meta bisazoalkane 6 can be mostly predicted from that of 4, the para isomer