Zobrazeno 21 - 30
of 43
pro vyhledávání: '"35"'
Publikováno v:
Journal of the American Chemical Society. 118:9831-9840
Photostimulated additions of tert-butylmercury halides to 1,6-dienes and enynes, including (CH2CHCH2)2X with X = CH2, C(COEt)2, O, or NCH2CHCH2, form the primary alkylmercury halides resulting from 5-exo-cyclizations of the adduct radicals, t-BuCH2CH
Publikováno v:
Journal of the American Chemical Society. 118:10783-10791
On heating in refluxing benzene, acyclic enyne−allene 4 underwent intramolecular transformations in a sequence with an initial Myers cycloaromatization to form α,3-didehydrotoluene biradical 5 followed by a 5-exo cyclization of the benzenoid radic
Publikováno v:
Journal of the American Chemical Society. 134(37)
The reaction of CpCr(CO)(3)H with activated alkynes in benzene has been examined. The kinetics of these reactions have been studied with various alkynes, along with the stereochemistry with which the alkynes are hydrogenated. The hydrogenation of phe
Publikováno v:
Journal of the American Chemical Society. 116:186-197
The reactivity of the two isoelectronic cations (Hg2+ and T P ) toward the cyclopropane ring is compared, and further evidence for the exclusive corner selectivity for Hg2+ is provided by isotope labeling. Cleavage of cyclopropyl derivative 1 with Hg
Autor:
Armando Lopez, José A. Dobado, José F. Quílez del Moral, M. Mar Herrador, Alejandro F. Barrero, Victoriano Domingo, Horacio R. Dieguez, Jesús F. Arteaga
Publikováno v:
Journal of the American Chemical Society. 132(1)
Investigations detailed herein, including density functional theory (DFT) calculations, demonstrate that the formation of either alkoxy- or hydroxy-Ti(III) complexes considerably decreases the energy of activation for C-O bond homolysis. As a consequ
Publikováno v:
Journal of the American Chemical Society. 113:657-665
The intramolecular cycloaddition reactions of the tetraene ethers 10 and 17 and the triene ether 28 were investigated. Acetone-sensitized excitation of 10 led to three intramolecular [2 + 2] cycloadducts 11-13. However, CuOTf-catalyzed photolysis of
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. 124(47)
Alkylation of N-nitrosourethane tetrabutylammonium salt (2-Bu(4)N) with four electrophiles (MeI, EtI, i-PrI, and PhCH(2)Br) was studied by (1)H NMR in CD(2)Cl(2) and CD(3)CN solutions. The ratio of the three regioisomers N-alkyl-N-nitrosourethane 3,
Publikováno v:
Journal of the American Chemical Society. 131:2762-2763
The thermodynamic properties of structurally similar Mn(III) and Mn(IV) complexes have been reinvestigated to understand their reactivity with substrates having C-H bonds. The complexes have the general formula [MnH(3)buea(O)](n-), where [H(3)buea](3