Application In Synthesis of (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature 499-40-1, C12H22O11. A document type is Article, introducing its new discovery.
The copper complexes with the commercial auxin herbicides MCPA, 2,4-D, and 2,4,5-T in the presence of a nitrogen donor heterocyclic ligand, phen or bipyam, were prepared and characterized. The available evidence supports a dimeric structure for the 2,4-D complex in the presence of bipyam while phen leads to monomeric forms. The EPR spectrum of Cu2(2,4-D)4(bipyam)2 at 4 K in the solid state exhibits an axial signal which corresponds to almost isolated S = 1/2 magnetic ions. Magnetic data for the dimer show a weak antiferromagnetic interaction between the two metal ions with J = -0.8 cm-1. The crystal structures of tetrakis[(2,4-dichlorophenoxy)acetato]bis(2,2′-bipyridylamine)dicopper(II), 1, bis(1,10-phenanthroline)[(2,4,5-trichlorophenoxy)acetato]copper(II) chloride, 2, and aqua(1,10-phenanthroline)bis[((2-methyl-4-chlorophenoxyacetato]copper(II), 3, were determined and refined by least-squares methods using three-dimensional MoKalpha data. 1 crystallizes in space group P1, in a cell of dimensions a = 10.813(1) A, b = 12.138(1) A, c = 11.909(1) A, alpha = 86.448(3), beta = 80.127(3), and gamma = 63.982(3), and V = 1383.7(2) A3, with Z = 1.2 crystallizes in space group I2/a, in a cell of dimensions a = 29.958(9) A, b = 11.342(3) A, c = 21.196(7) A, beta = 107.94(1), and V = 6852.2(4) A3, with Z = 8. 3 crystallizes in space group P1, in a cell of dimensions a = 8.7419(8) A, b = 12.512(1) A, c = 14.598(1) A, alpha = 110.737(1), beta = 95-742(2), gamma = 103.286(2), V = 1424.1(2) A3, with Z = 2.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics