52751-12-9Relevant academic research and scientific papers
Stereochemistry of transmetalation of alkylboranes in nickel-catalyzed alkyl-alkyl cross-coupling reactions
Taylor, Buck L. H.,Jarvo, Elizabeth R.
body text, p. 7573 - 7576 (2011/11/14)
Deuterium-labeled alkylborane reagents 2a and 2b were prepared and subjected to cross-coupling reactions in the presence of a nickel catalyst. NMR analysis of the products indicates that transmetalation from boron to nickel proceeds with retention of conf
Using secondary alpha deuterium kinetic isotope effects to determine the stereochemistry of an E2 reaction; the stereochemistry of the E2 reaction of 1-chloro-2-phenylethane with potassium tert-butoxide in tert-butyl alcohol
Smith,Crowe,Westaway
, p. 1145 - 1152 (2007/10/03)
Isotopic labelling studies have shown that the E2 reaction of 1-chloro-2-phenylethane with potassium tert-butoxide in tert-butyl alcohol occurs via an anti-periplanar stereochemistry. This demonstrates that the different secondary alpha deuterium kinetic isotope effects found for the high and low base concentrations and in the presence of 18-crown-6 ether are because of changes in transition state structure that occur when the form of the reacting base changes rather than to a change in the stereochemistry of the reaction.
Structural Characterisation in Solution of Intermediates in Rhodium-catalysed Hydroformylation and their Interconversion Pathways
Brown, John M.,Kent, Alexander G.
, p. 1597 - 1608 (2007/10/02)
The reaction of HRh(CO)(PPh3)3 (1) with CO has been studied by 1H, 13C, and 31P n.m.r.The main species present under ambient conditions is HRh(CO)2(PPh3)2 (2) which exists as two rapidly equilibrating trigonal bipyramidal isomers.Complexes (1) and (2) are
Mechanism of elimination rections. 40. Attempted study of stereochemistry of elimination from 2-(p-nitrophenyl)ethyltrimmethylammonium ion. Base-promoted cis-trans isomerization of p-nitrostyrene-β-d1
Dohner, Brent R.,Saunders, William H., Jr.
, p. 1026 - 1030 (2007/10/02)
Stereospecifically deuterated ArCHDCHDNMe3+I- and ArCHDCHDNMe2O have been prepared, where Ar=C6H5 and p-NO2C6H4.When Ar=C6H5, the elimination reaction of the quaternery salt with ethoxide in ethanol goes with >98percent anti stereoch
Stereochemical Kinetics of the Thermal Stereomutations Interconverting Achiral Isomers of 1-Phenyl-1,2,3-trideuteriocyclopropane
Baldwin, John E.,Patapoff, Thomas W.,Barden, Timothy C.
, p. 1421 - 1426 (2007/10/02)
All three achiral forms of 1-phenyl-1,2,3-trideuteriocyclopropane have been synthesized with high stereochemical integrity, and the thermal stereomutations among them have been followed at 309.3 deg C in the gas phase by Raman and 1H NMR spectroscopy.The
STEREOCHEMISTRY OF THE THERMAL ISOMERIZATIONS OF (2S,3R)-2-METHOXYMETHYL-2,3-DIDEUTERIO-1-(DIDEUTERIOMETHYLENE)CYCLOPROPANE
Baldwin, John E.,Chang, Glenn Eu Chung
, p. 825 - 835 (2007/10/02)
The (2S,3R) isomer of 2-methoxymethyl-2,3-dideuterio-1-(dideuteriomethylene)cyclopropane has been synthesized and heated at 198.8o: from the experimentally observed mol fractions of the eight isomers of 2,3,α,α,- and 2,3,3,α-tetradeuterio-2-met
