Chemoselective desulfurization-fluorination/bromination of carbonofluoridothioates for the O-trifluoromethylation and O-bromodifluoromethylation of alcohols
作者:Jie Liu、Haonan Xiang、Lvqi Jiang、Wenbin Yi
DOI:10.1007/s11426-021-1028-6
日期:2021.8
trifluoromethyl and alkyl bromodifluoromethyl ethers using carbonofluoridothioates (R-OC(=S)F) as precursors has been described. Carbonofluoridothioates were obtained upon the reaction of an alcohol and S=CF2 generated via the decomposition of an SCF3 anion, and then selectively transformed into their corresponding trifluoromethyl and bromodifluoromethyl ethers upon changing the reaction conditions. This
iron(ii) spin-crossover (SCO) complexes are a class of switchable molecular materials proposed for molecule-based switching and memory applications. In this study, we report on the SCO behavior of a series of iron(ii) complexes composed of rationally designed 2-(1H-pyrazol-1-yl)-6-(1H-tetrazol-5-yl)pyridine (ptp) ligands. The powder forms of [Fe2+(R-ptp-)2]0 complexes tethered with less-bulky substituents-R
Postsynthetic Conjugation of Protected Oligonucleotides Containing 3‘-Alkylamines
作者:Dustin L. McMinn、Marc M. Greenberg
DOI:10.1021/ja9740834
日期:1998.4.1
for synthesizing 3‘-oligonucleotide conjugates is described. 3‘-Oligonucleotide conjugates containing amide or urea linkages between the oligonucleotide portion and the conjugated species were obtained by reacting protected oligonucleotidescontaining3‘-alkylamines in aprotic organic solvents with carboxylic acid and isocyanate substrates, respectively. The protected oligonucleotides are obtained via
Novel Charge-Transfer Materials via Cocrystallization of Planar Aromatic Donors and Spherical Polyoxometalate Acceptors
作者:P. Le Maguerès、S. M. Hubig、S. V. Lindeman、P. Veya、J. K. Kochi
DOI:10.1021/ja0019878
日期:2000.10.1
between the CT transition energies and the reduction potentials of the POM acceptors, as well as by the transient (diffusereflectance) absorptionspectra (upon picosecond laser excitation) of anthracene or pyrene cation radicals (in monomeric and π-dimeric forms). X-ray crystallographic studies reveal a unique “dimeric” arrangement of the cofacially oriented arene couples which show contact ...