70064-29-8Relevant academic research and scientific papers
CATALYTIC ANTI-MARKOVNIKOV OXIDATION AND HYDRATION OF OLEFINS
-
Page/Page column 18, (2012/07/14)
The disclosure provides a dual-catalysis system for direct conversion of olefins to alcohols. The cooperative catalytic system contains one oxidizing catalyst and one transfer-hydrogenation catalyst. A wide variety of olefins, including aromatic and aliphatic olefins, can be used as the reactant. The transformation proceeds with anti-Markovnikov selectivity, and in some aspects provides primary alcohols as major products. The disclosure further provides a system for oxidation of olefins with anti-Markovnikov selectivity.
Iron catalyzed highly regioselective dimerization of terminal aryl alkynes
Midya, Ganesh Chandra,Paladhi, Sushovan,Dhara, Kalyan,Dash, Jyotirmayee
supporting information; experimental part, p. 6698 - 6700 (2011/07/07)
Iron can catalyze head-to-head dimerization of terminal aryl alkynes to give the corresponding (E) selective conjugated enynes in high yields. A variety of substituted aryl acetylenes underwent smooth dimerization using catalytic FeCl3 and DMEDA in the presence of KOtBu.
A new efficient tetraphosphine/palladium catalyst for the Heck reaction of aryl halides with styrene or vinylether derivatives
Feuerstein, Marie,Doucet, Henri,Santelli, Maurice
, p. 2191 - 2194 (2007/10/03)
cis,cis,cis-1,2,3,4-Tetrakis(diphenylphosphinomethyl)cyclopentane/[PdCl(C 3H5)]2 system efficiently catalyses the Heck reaction of aryl halides with styrene and vinylether derivatives. High turnover numbers can be obtained for the reaction of several aryl halides with styrene and styrene derivatives. Lower turnover numbers have been observed in the presence of vinylethers.
Picosecond radical kinetics. Rate constants for ring openings of (2-alkoxy-3-phenylcyclopropyl)methyl radicals
Tadic-Biadatti, Marie-Helene Le,Newcomb, Martin
, p. 1467 - 1474 (2007/10/03)
Rate constants for ring openings of the (trans,trans-2-methoxy-3-phenylcyclopropyl)methyl radical (1M) and the (trans,trans-2-tert-butoxy-3-phenylcyclopropyl)methyl radical (1B) have been determined between -21 and 37 deg C by indirect kinetics employing benzeneselenol trapping as the composition reaction.Radicals 1 were formed in chain reactions of the appropriate 'PTOC esters', 2-thioxopyridine-N-oxy derivatives of the corresponding carboxylic acids, the syntheses of which are reported.Radicals 1 rearrange with rate constants of 8 * 1011 s-1 (1M) and 5 * 1011 s-1 (1B) at 25 deg C with predominant (160:1 and 60:1, respectively) cleavage to give benzylic radical products.The rate constants for ring openings to the minor, alkoxy-substituted radical products represent the first measurements of the kinetic effects of alkoxy substitution on cyclopropylcarbinyl radical ring openings.Precursors to radicals 1 can be employed in mechanistic probe studies that permit differentiation between radical and cationic intermediates.
Studies in the Tricyclooctane Series. VI. Dehydrohalogenation of 8,8-Dihalobicycloocta-2,4-dienes: Plausible Intermediates in the Tricyclooctane-Styrene Conversion
Banwell, Martin G.,Halton, Brian
, p. 2685 - 2691 (2007/10/02)
The dehydrohalogenation of 8,8-dichloro- and 8,8-dibromo-bicycloocta-2,4-diene (4c,d) gives rise to the (E)- and (Z)-isomers of β-t-butoxystyrene (2c).Plausible pathways for the conversion are discussed and evidence in support of bicycloocta-2,4-dienes as intermediates in the conversion is presented.The results support the intervention of halobicycloocta-2,4-dienes in the conversion of tetra- and tri-halo-cis-transoid-cis-tricyclo3,5>octanes (1a-d) to styrenes (2a-c).
