A ligand-promoted, palladium-catalyzed transfer hydrogenation of terminal alkynes using ethanol as the hydrogen donor is developed. The chemical selectivity control achieved based on ligand regulation. use triethanolamine and tetrahydrofuran at 80 °C under N 2 found to be critical for alkynes. general applicability this procedure highlighted by synthesis 27 alkenes in moderate good yields.

highly active cu (ii) complex with 1,4-dihydroxy anthraquinone as a cheap and accessable ligand could be used as a catalyst for the preparation of structurally different propargylamines from a one-pot, three-component reaction of terminal alkynes, aldehydes, and secondary amines with high yields under solvent-free conditions. the 1,4-dihydroxy anthraquinone is a very efficient cu(ii) scavenger ...

Multicoated magnetite magnetic nanoparticles (MNP) with polyacrylic acid as a terminal hydrophilic ligand showed reproducibility of the composite particles when used draw solution. The tight covalent bond allows MNPs to maintain their osmotic potential after filtration.

Abstract Hydrothermal synthesis, crystal structure and properties of a new heterometallic coordination polymer [(VO(terpy)) 4 (MoO ) 2 (Mo 8 O 26 )]·2H ( 1 (terpy = 2,2′;6′,2″-terpyridine) are reported. Compound contains two crystallographically unique vanadium(IV) atoms, bonded to terminal oxido ligand further coordinated terpy ligand. The three N atoms occupy the meridional sites distorted {V...

How sorting receptors recognize amino acid determinants on polypeptide ligands and respond to pH changes for ligand binding or release is unknown. The plant vacuolar sorting receptor BP-80 binds polypeptide ligands with a central Asn-Pro-Ile-Arg (NPIR) motif. tBP-80, a soluble form of the receptor lacking transmembrane and cytoplasmic sequences, binds the peptide SSSFADSNPIRPVTDRAASTYC as a mon...

Substrate-binding proteins (SBPs) mediate ligand translocation and have been classified into seven clusters (A-G). Although the substrate specificities of these are known to some extent, their ligand-binding mechanism(s) remain(s) incompletely understood. In this study, list SBPs belonging different was updated (764 SBPs) compared previously reported study (504 SBPs). Furthermore, a new cluster...