Zobrazeno 61 - 70
of 99
pro vyhledávání: '"35"'
Publikováno v:
Journal of the American Chemical Society. 133(34)
Concise and protecting-group-free total syntheses of the marine oxylipins hybridalactone (1) and three members of the ecklonialactone family (2-4) were developed. They deliver these targets in optically pure form in 14 or 13 steps, respectively, in t
Publikováno v:
Journal of the American Chemical Society. 114:9483-9492
Prolonged treatment of the tetrakis (tetrahydroborate) complexes Zr(BH{sub 4}{sub 4}) or Hf(BH{sub 4}){sub 4} with trimethylphosphine has given the first trinuclear group 4 polyhydrides, M{sub 3}H{sub 6}(BH{sub 4}){sub 6}(PMe{sub 3}){sub 4}, where M
Autor:
Isabel Saura-Llamas, John A. Gladysz
Publikováno v:
Journal of the American Chemical Society. 114:2136-2144
Diastereomerically pure secondary alcohols epimerize to mixtures of diasteromers in C{sub 6}H{sub 5}R at 65-90 {degrees}C in the presence of 10 mol% ({eta}{sup 5}C{sub 5}R{sub 5})Re(NO)(PPh{sub 3})(OCH{sub 3}) (1; R = H, Me). The methoxide ligand of
Publikováno v:
Journal of the American Chemical Society. 131(9)
We previously used a combination of CW and pulsed-ENDOR protocols to identify the types of protonated oxygen (OHx) species and their disposition within the FeIII/FeIV cluster of Intermediate X, the direct precursor of the essential diferric-tyrosyl r
Autor:
Somdatta Ghosh, Abhishek Dey, Charles P. Scholes, Vladimir M. Grigoryants, Edward I. Solomon, Oleg M. Usov, Yan Sun
Publikováno v:
Journal of the American Chemical Society. 129(34)
Copper nitrite reductase (NiR) is a homotrimeric enzyme, containing a T1 copper site, which transfers electrons to the T2 catalytic site, where nitrite is reduced by one electron to nitric oxide (NO2− + 2H+ + e− → NO + H2O).1–3 Recently a sid
Autor:
Suzy Surblé, Michel Latroche, Christian Serre, Franck Millange, Gérard Férey, Sandrine Bourrelly, Tina Düren, Philip L. Llewellyn
Publikováno v:
Journal of the American Chemical Society. 128(46)
A new three-dimensional chromium(III) naphthalene tetracarboxylate, CrIII3O(H2O)2F{C10H4(CO2)4}1.5.6H2O (MIL-102), has been synthesized under hydrothermal conditions from an aqueous mixture of Cr(NO3)3.9H2O, naphthalene-1,4,5,8-tetracarboxylic acid,
Publikováno v:
Journal of the American Chemical Society. 128(45)
Reaction of trans-[Ru(VI)(L)(O)(2)](2+) (1, L = 1,12-dimethyl-3,4:9,10-dibenzo-1,12-diaza-5,8-dioxacyclopentadecane, a tetradentate macrocyclic ligand with N(2)O(2) donor atoms) with nitrite in aqueous solution or in H(2)O/CH(3)CN produces the corres
Publikováno v:
Journal of the American Chemical Society. 128(25)
Nickel complexes having a bulky tri(sec-alkyl)phosphine ligand catalyze hydroheteroarylation of alkynes at 35 degrees C. Selective activation of an Ar-H bond over an Ar-CN bond of N-protected 3-cyanoindoles is achieved by a proper choice of ligand an
Publikováno v:
Journal of the American Chemical Society. 128(18)
The silyl-substituted titanocene complex, (eta5-C5Me4SiMe2Ph)2Ti, coordinates dinitrogen upon cooling to -35 degrees C to yield an unprecedented example of a mono(dinitrogen) complex of a substituted bis(cyclopentadienyl) titanium compound, (eta5-C5M
Publikováno v:
Journal of the American Chemical Society. 127(41)
Variations in the hydrogen bond network of the Oxy-1.5 DNA guanine quadruplex have been monitored by trans-H-bond scalar couplings, (h2)J(N2N7), for Na(+)-, K(+)-, and NH(4)(+)-bound forms over a temperature range from 5 to 55 degrees C. The variatio