Emerging solvent-induced homochirality by the confinement of achiral molecules against a solid surface
One hand mapping: By means of scanning tunneling microscopy, solvent-induced homochirality is shown to emerge in self-assembled monolayers of achiral molecules at the liquid-solid interface (see picture). The chirality of the solvent directs the macroscopic chirality of the monolayer. The dynamics of the monolayer structure as it evolves towards homochirality are probed by time-dependent measurements. (Figure Presented)
Katsonis, Nathalie,Xu, Hong,Haak, Robert M.,Kudernac, Tibor,Tomovic, Zeljko,George, Subi,Van Der Auweraer, Mark,Schenning, Albert P. H. J.,Meijer,Feringa, Ben L.,De Feyter, Steven
Benzylic-acetoxylation of alkylbenzenes with PhI(OAc)2 in the presence of catalytic amounts of TsNH2 and I2
Treatment of alkylbenzenes with (diacetoxyiodo)benzene in the presence of catalytic amounts of p-toluenesulfonamide or p-nitrobenzenesulfonamide, and molecular iodine in 1,2-dichloroethane at 60 °C gave the corresponding (α-acetoxy)alkylbenzenes in good to moderate yields. The present reaction is a simple method for the introduction of an acetoxy group to the benzylic position of alkylbenzenes.
Baba, Haruka,Moriyama, Katsuhiko,Togo, Hideo
experimental part
p. 4303 - 4307
(2011/08/22)
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