53551-23-8Relevant articles and documents
Palladium-catalyzed intermolecular transthioetherification of aryl halides with thioethers and thioesters
Li, Yahui,Bao, Gao,Wu, Xiao-Feng
, p. 2187 - 2192 (2020/03/11)
Functional group transfer reactions are an important synthetic tool in modern organic synthesis. Herein, we developed a new palladium-catalyzed intermolecular transthioetherification reaction of aryl halides with thioethers and thioesters. The synthetic utility and practicality of this catalytic protocol are demonstrated in a wide range of successful transformations (>70 examples). This catalytic protocol is applicable in carbonylative coupling processes as well, and the first example of carbonylative methylthioesterification of aryl halides has been achieved. Notably, this work also provides an approach to using natural products, such as methionine and selenomethionine, as the functional group sources.
Atom-Economical and Tandem Conversion of Nitriles to N-Methylated Amides Using Methanol and Water
Paul, Bhaskar,Maji, Milan,Kundu, Sabuj
, p. 10469 - 10476 (2019/11/05)
A cobalt complex catalyzed tandem conversion of nitrile to N-methylated amide is described using a methanol and water mixture. Using this protocol, several nitriles were directly and efficiently converted to the desired N-methylated amides. Kinetic experiments using H2O18 and CD3OD suggested that water and methanol were the source of the oxygen atom and methyl group, respectively, in the final N-methylated amides. Importantly, the participation of active Co(I)-H species in this transformation was realized from the control experiment. The kinetic isotope effect (KIE) study suggested that the activation of the C-H bond of methanol was a kinetically important step. The Hammett plot confirmed that the reaction was faster with the electron deficient nitriles. In addition, the plausible pathway for the formation of N-methylated amides from the nitriles was supported by the computational study.
Synthesis and isolation of a homodimer of cadmium selenide nanocyrstals
Peng,Wilson,Alivisatos,Schultz
, p. 145 - 147 (2007/10/03)
By size-selective precipitation homodimeric CdSe nanocyrstals could be isolated from a mixture of oligomers formed when monodisperse CdSe nanocrystals were linked by the bifunctional organic ligand, bis(acyl hydrazide). TEM images revealed a reproducible separation between CdSe particles of approximately a quarter of the particle diameter. This distance is consistent with the physical dimensions of the linker.