97664-19-2Relevant academic research and scientific papers
Palladium-catalyzed desulfinylative C-C allylation of Grignard reagents and enolates using allylsulfonyl chlorides and esters
Rao Volla, Chandra M.,Dubbaka, Srinivas Reddy,Vogel, Pierre
, p. 504 - 511 (2009)
2-Methylprop-2-ene-, prop-2-ene-, 1-methylprop-2-ene-, and (E)-but-2-enesulfonyl chlorides have been used as electrophilic partners in desulfinylative palladium-catalyzed C-C coupling with Grignard reagents and sodium salts of dimethyl malonate and methyl
γ-Selective cross-coupling of allylic silanolate salts with aromatic bromides using trialkylphosphonium tetrafluoroborate salts prepared directly from phosphine?borane adducts
Denmark, Scott E.,Werner, Nathan S.
supporting information; experimental part, p. 4596 - 4599 (2011/10/12)
The γ-selective, palladium-catalyzed cross-coupling of sodium (Z)-2-butenyldiethylsilanolate with a variety of aromatic bromides is reported. The protocol provides high yields (73-94%) and site selectivity (γ/α, 25:1 → > 99:1) in the coupling of electron-
Ligandless iron-catalyzed desulfinylative C-C allylation reactions using Grignard reagents and alk-2-enesulfonyl chlorides
Volla, Chandra M. R.,Markovic, Dean,Dubbaka, Srinivas Reddy,Vogel, Pierre
scheme or table, p. 6281 - 6288 (2011/02/28)
Alk-2-enesulfonyl chlorides 1-4 were synthesized by the BCl3-promoted ene reaction of alkenes with SO2. These sulfonyl chlorides were then used as electrophilic partners in iron-catalyzed desulfinylative cross-coupling reactions with different Grignard reagents (aromatic, aliphatic, and heteroaromatic). The reaction can be catalyzed with even 2 mol-% of the simple iron salt Fe(acac)3. The regioselectivity of these allylations was studied by using sulfonyl chlorides 3 and 4 with aryl Grignard reagents. The scope of these allylations was further extended by the coupling of ester-substituted alk-2-enesulfonyl chloride 10 with aromatic Grignard reagents. Symmetrical products were synthesized by double C-C allylation with the use of 2-methylidenepropane-1,3-disulfonyl chloride (12). Wiley-VCH Verlag GmbH & Co. KGaA.
REGIO- AND STEREO-CHEMISTRY IN ALLYLATION OF ARYL GRINARD REAGENTS CATALYZED BY PHOSPHINE-NICKEL AND -PALLADIUM COMPLEXES
Hayashi, Tamio,Konishi, Mitsuo,Yokota, Kan-Ichi,Kumada, Makoto
, p. 359 - 374 (2007/10/02)
Nickel and palladium complexes with the 1,1'-bis(diphenylphosphino)ferrocene ligand effectively catalyze regioselective cross-coupling of allylic ethers such as 1- or 3-methyl-2-propenyl silyl ethers with aryl-Grinard reagents, where the nickel catalyst l
Process for producing unsaturated hydrocarbons
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, (2008/06/13)
A process for producing unsaturated hydrocarbons which comprises contacting a paraffin, monoolefin and/or alkylaromatic compounds with a catalyst at a temperature within the range of from 400° to 700° C. in the presence of an inert gas and/or steam. The catalyst comprises a carrier having deposited thereonto an oxide of molybdenum in an amount of from 5 to 35% by weight of the catalyst. As the carrier, use is made of a granulated porous crystalline silica modified with magnesia in an amount of from 1 to 20% by weight of the carrier; a granulated magnesium-titanium carrier consisting of 50 to 95% by weight of MgO and 50 to 5% by weight of TiO2, or a granulated magnesium-aluminum carrier consisting of 70 to 95% by weight of MgO and 5 to 30% by weight of Al2 O3. Through the spent catalyst an oxygen-containing gas is passed at a temperature within the range of from 400° to 700° until catalytic activity is restored to the catalyst. The process, according to the present invention, ensures a high selectivity; substantially simplifies temperature control in the reaction zone; avoids the possibility of forming of a hazardous mixture of hydrocarbons with oxygen; and simplifies purification of waste waters.
