35584-80-6Relevant academic research and scientific papers
Reactions of organocobaloximes with aryldisulfonyl chlorides
Gupta,Vijaikanth
, p. 1102 - 1109 (2004)
Photochemical reactions of benzyl, heteroaromaticmethyl and allylcobaloximes with aryldisulfonyl chlorides yield symmetrical disulfones. Allyl cobaloximes yield allyldisulfones as the major product whereas bibenzyl is the major product in benzylcobaloximes. A time dependent 1H NMR studies show that bibenzyl is formed from O -benzyldimethylglyoxime - a predominant product in the initial stage of the reaction.
Co-C bond cleavage in the reactions of alkyl, benzyl and heteroaromaticmethyl cobaloximes with arene sulfenyl chloride: Homolytic and heterolytic pathways
Gupta,Dixit, Vandana,Das, Indira
, p. 49 - 58 (2007/10/03)
The reactions of arene sulfenyl chlorides, ArSCl, (Ar=Ph, C6Cl5, 2,4 (NO2)2C6H3) with organocobaloximes, RCo(dmgH)2Py, (R=alkyl, benzyl and heteroaromaticmethyl) were carried out under thermal and photochemical conditions. A variety of organic and organometallic products are formed depending upon the substrate cobaloxime. For 3-methoxybenzyl and heteroaromaticmethyl cobaloximes the results suggest that they represent a unique class of cobaloximes whereby both the aromatic ring as well as the Co-C bond are highly activated towards attack by the arene sulfenyl chloride. Both homolytic as well as heterolytic pathways are operative.
Generation and Trapping of Benzyl Radicals from Benzyl Iodides by Cobaloxime-mediated Iodine Atom Abstractions
Brown, Trevor M.,Cooksey, Christopher J.,Crich, David,Dronsfield, Alan T.,Ellis, Robert
, p. 2131 - 2136 (2007/10/02)
Ethylcobaloxime has been demonstrated to function as a convenient source of ethyl radicals on white light photolysis in ethanol.The ethyl radicals so generated take part in iodine abstractions with benzyl iodides giving benzyl radicals which may be trapped with 2,2,6,6-tetramethylpiperidinyloxyl (TEMPO) or lepidinium camphor-10-sulfonate.
Homolytic Displacement at Saturated Carbon in Organocobalamines. Part 4
Gupta, B. Dass,Roy, Maheswar,Roy, Sujit,Kumar, Manoj,Das, Indira
, p. 537 - 543 (2007/10/02)
Benzyl and para-substituted benzylcobaloximes react with substituted arenesulphonyl chlorides under photochemical and anaerobic conditions at 0 deg C to give a variety of products including the sulphones, bibenzyls, and benzyl ethers of dimethylglyoxime in variable yields.However, when the reactions are carried out in the presence of a 1 mol excess of pyridine, the yield of sulphones is increased by at least 20percent in each case.The corresponding yield of bibenzyls is decreased and no trace of the benzyl ether of dimethylglyoxime is formed.On the other hand, the reaction of heteroaromatic methyl cobaloximes with arenesulphonyl chlorides form the corresponding sulphones as the exclusive organic product in good yield and with no side products.The reactions are interpreted in terms of a direct attack of the arenesulphonyl radical on the α carbon of the benzyl and heteroaromatic methyl ligand.
HOMOLYTIC DISPLACEMENT AT SATURATED CARBON CENTRE: SYNTHESIS OF BENZYLSULPHONES
Gupta, B. D.,Kumar, Manoj,Das, Indira,Roy, M.
, p. 5773 - 5776 (2007/10/02)
The reactions of benzyl cobaloximes with p-substitued benzene sulphonyl chlorides under photochemical conditions from benzyl sulphones by novel SH2 process.
Oxidation of allyl-and allenylcobaloximes by manganese (III) acetate. A new route to dimethylglyoxime monoethers.
Gaudemer,Gaudemer
, p. 1445 - 1447 (2007/10/02)
Oxidation of allyl-and allenylcobaloximes by manganese (III) acetate yields allyl and propargyl ethers of dimethylglyoxime.
