Ketones with primary and secondary α-carbons. Ketone 1 (0.3 mmol), allylic alcohol 2a (0.1 mmol). Using iPrOH as solvent. Full size image Next, we studied the ketones with secondary and tertiary α-carbons (Fig. 3b). 2-Alkyl-substituted cyclic ketones 2-methylcyclopentanone, 2-...
To produce a ketone from a secondary alcohol corresponding thereto with high yield and selectivity by using a small amount of a bromic acid or a salt thereof.;SOLUTION: The ketone is produced by oxidizing the corresponding secondary alcohol in the presence of an oxidizing reagent composed of the...
3.23.2.3Allylation ofN-Acylhydrazones with a Chiral Aminoalcohol Ligand Allylsilane7(prepared and employed as a 2:1 mixture of diastereomers), derived frompseudoephedrine, has been shown to be a highly effective reagent for the enantioselectiveallylationof both aldehyde and ketone-derivedN-acylhydrazon...
Breakdown of the intermediate dialkoxide can in some instances precede protonation of the alkyllithium reagent. Rapid addition of the organometallic to the exposed ketone can then take place and result in the formation of a tertiary alcohol. For this reason, House favored inverse addition of the ...
The optimum conditions for in vivo formation of secondary alcohol and methyl ketone from n-alkanes were compared between two distinct types of C1-utilizing... CT Hou,RN Patel,AI Laskin,... - 《Canadian Journal of Microbiology》 被引量: 211发表: 1981年 ...
hydrolyzed to form secondary butanol aqueous solution, and then dehydrated and concentrated to obtain secondary butanol. Pure SEC-Butanol is dehydrogenated by catalysis of nickel or zinc oxide to obtain the finished product. This method is divided into two kinds of N-butene direct hydration method,...
2. A method according to claim 1 wherein said another enzyme reaction is carried out using an enzyme selected from the group consisting of isocitrate dehydrogenase, alcohol dehydrogenase, glucose-6-phosphate dehydrogenase, aldehyde dehydrogenase and glucose dehydrogenase, and with its substrate. ...
Functionalized porous poly(aryl ether ketone) articles are prepared by reacting ketone groups in the backbone of poly(aryl ether ketone) polymer with a primary amine reagent. Prefer
The latter problem can be solved by generating bromine in situ by reaction between hydrogen peroxide and bromide ions or hydrogen bromide, but this inevitably increases the exposure of the alcohol to HBr/Br<->. The selectivity of the process towards non-substituted oxidation depending upon the ...
R'' is alkyl or H0 is used as a reagent, and it is reacted with a ketone and a compound shown by the formula II (R is secondary or tertiary alkyl; X is halogen) preferably in the presence of an organic solvent at <=30 deg.C, preferably <=0 deg.C to give the titled compound...