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Carboxylic reduction

Hence the rhodium III solvated by lattice oxide ions and presumably extra framework oxide ions or hydroxo ligands (depending on the dehydration state) could be carboxylated reductively to rhodium I dicarbonyl according to one of the following reaction scheme depending on the hydration state... [Pg.459]

Various parameters need to be considered before performing EPS hydrolysis, namely substrate specificity, temperature, reaction medium, duration, and pH. Carboxyl reduction of EPS [323,324] prior to hydrolysis renders the bacteriophage enzyme inactive against the EPS, even though the polymer structure remains intact. A preliminary indication of the presence of depolymerase activity can be seen by the presence of a translucent halo surrounding the phage... [Pg.2366]

Valent et al. (1980) have reported that carboxyl reduction can be achieved with NaBH4 (NaB H4) in an ethanol-tetrahydrofuran mixture. However, the reduction of esters under these conditions may be accompanied by ester hydrolysis (Aspinall, 1973), thus requiring two or three cycles of esterification and reduction. [Pg.91]

Fig. 6. Separation of the PM AA from S130, after carboxyl reduction. Separation was achieved on OV-225 GLC conditions as for Fig. 5. Fig. 6. Separation of the PM AA from S130, after carboxyl reduction. Separation was achieved on OV-225 GLC conditions as for Fig. 5.
Obtained after carboxyl reduction of (1—>4)-linked galacturonic acid with LiAr" H4. Typical relative intensities are given in parentheses. [Pg.95]

A different approach to cyclodopa (alkyl 5,6-dihydroxy-2,3-dihydroindole-2-carboxylates has been devised (ref. 40) since the described process (ref.38) only results in acceptable yields when operated in very dilute solution. In the modified method. Scheme 5b, racemic 3,4-dihydroxyphenylalanine (dopa) methyl ester hydrochloride (C) was iodinated with potassium iodate in a two phase system, then treated with sodium dithionite and acetylated to afford methyl 5,6-diacetoxy-7-iodo-2,3-dihydroindole-2-carboxylate. Reductive treatment of this with Pd-C, and hydrogen in ethanolic solution containing triethylamine and conversion to the hydrochloride gave the product (methyl ester diacetate hydrochloride)in 40% overall yield. [Pg.742]

Before preparative reductions of carboxylates with cells will be described some hints about the purified enzyme will be given (75-77). Besides the purification and partial structural characterisation we conducted some kinetic measurements (77). In addition to the carboxylate reduction the dehydrogenation of aldehydes was studied. There is a broad substrate specificity of the enzyme from C. thermoaceticum for aliphatic and aromatic aldehydes. The values for ethanal, propanal and butanal are in the region of 0.006-0.01 mM. The values for acetate and propionate are about 5 and 6 mM that means 3 orders of magnitude larger. The ratio of for aldehydes and the corresponding... [Pg.862]


See other pages where Carboxylic reduction is mentioned: [Pg.62]    [Pg.126]    [Pg.156]    [Pg.299]    [Pg.422]    [Pg.15]    [Pg.346]    [Pg.77]    [Pg.397]    [Pg.405]    [Pg.405]    [Pg.860]    [Pg.173]    [Pg.209]    [Pg.88]    [Pg.102]    [Pg.156]    [Pg.62]    [Pg.237]    [Pg.93]    [Pg.861]    [Pg.862]    [Pg.62]    [Pg.126]    [Pg.84]    [Pg.297]    [Pg.186]    [Pg.258]   
See also in sourсe #XX -- [ Pg.111 , Pg.214 , Pg.215 ]

See also in sourсe #XX -- [ Pg.294 ]

See also in sourсe #XX -- [ Pg.294 ]

See also in sourсe #XX -- [ Pg.32 , Pg.48 ]




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Alcohol carboxylic acid reduction

Alcohols by reduction of carboxylic acids

Aldehydes carboxylic acid reduction

Aldehydes from carboxylic acid reduction

Alkyl perfluoro carboxylates reduction

Amines carboxylic acid reduction

Aromatic carboxylic Birch reduction

Birch reduction, carboxylic acid derivatives

Borane carboxylic acid reduction

By reduction of carboxylic

By reduction of carboxylic acids

Carboxyl groups reduction

Carboxyl groups, protection reduction

Carboxylate reduction potential

Carboxylation reductive pentose phosphate pathwa

Carboxylation, reductive

Carboxylation, reductive

Carboxylic acid allyl esters, reductive cleavage

Carboxylic acid anhydrides reduction

Carboxylic acid derivate, reduction

Carboxylic acid derivatives partial reduction

Carboxylic acid derivatives reduction

Carboxylic acid derivatives reductions, sodium borohydride

Carboxylic acid esters LiAlH4 reduction

Carboxylic acid esters ethers, reduction

Carboxylic acid esters reduction

Carboxylic acid esters, reduction using

Carboxylic acid reductive

Carboxylic acids Birch reduction

Carboxylic acids aromatic, reduction

Carboxylic acids carboxyl groups reduction

Carboxylic acids cathodic reduction

Carboxylic acids dissolving metal reduction

Carboxylic acids enzymatic reduction

Carboxylic acids heteroaromatic, reduction

Carboxylic acids proton reduction

Carboxylic acids reduction

Carboxylic acids reduction mechanism

Carboxylic acids reduction with

Carboxylic acids reduction with borane

Carboxylic acids reduction, with sodium borohydride

Carboxylic acids reductions, palladium acetate

Carboxylic acids reductive amination

Carboxylic acids reductive coupling

Carboxylic acids reductive halogenation

Carboxylic acids selective reduction

Carboxylic acids, acetylenic, reduction

Carboxylic acids, aliphatic, reduction

Carboxylic acids, aromatic, olefinic reduction

Carboxylic acids, esters reductive coupling

Carboxylic acids, functional derivatives reduction

Carboxylic acids, olefinic reduction

Carboxylic acids, reduction (prim

Carboxylic acids, reduction with LiAlH

Carboxylic acids, reduction with aluminum borohydride

Carboxylic derivs., reactions reduction

Carboxylic esters reduction

Carboxylic esters reductive halogenation

Carboxylic esters, acylation reduction

Chemoselectivity carboxylic acid reductions

DIBAL reduction of carboxylic ester

Electrochemical reduction carboxylic acids

Enzymatic Conversion of CO2 (Carboxylation Reactions and Reduction to Energy-Rich Cl Molecules)

From reduction of carboxylic acids

Hydride as a nucleophile reduction of carboxylic acid derivatives

Indole-2-carboxylic acid reduction

Isoxazoline-4-carboxylic acids reduction

Lithium aluminum hydride carboxylic acids reduction

Lithium carboxylic acid reduction

Methyl compounds, reduction carboxylic esters

Photosynthesis reductive carboxylic acid cycle

Protons, from carboxylic acids, reduction

Pyridine carboxylic acids, reduction

Pyrrole-2-carboxylic acid reduction

Pyrroline-5-carboxylic acid reduction

Pyruvate reductive carboxylation

REDUCTION, OF CARBOXYLIC ACIDS TO ALDEHYDES

Reducible Functional Groups Reductive Amination with Carboxylic Acids

Reduction by carboxyl

Reduction of Aldehydes, Ketones, and Carboxylic Acid Derivatives

Reduction of Aliphatic Carboxylic Acids

Reduction of Aromatic Carboxylic Acids

Reduction of Carboxyl Groups

Reduction of Carboxylic Acids Containing Substituents or Other

Reduction of Carboxylic Acids and Their Derivatives

Reduction of Carboxylic Acids by Lithium Aluminum Hydride

Reduction of carboxylic acid derivate

Reduction of carboxylic acid derivatives

Reduction of carboxylic acid esters

Reduction of carboxylic acids

Reduction of carboxylic acids and esters

Reduction reaction carboxylic acid derivatives

Reduction reactions carboxylic acids

Reduction, acid chlorides carboxylic acids

Reductions of Carboxylic Acid Derivatives to Alcohols or Amines

Reductions of Carboxylic Acid Derivatives to Aldehydes

Reductive carboxylate cycle

Reductive carboxylation system

Sulfide, dimethyl carboxylic acid reduction

Thiazole-2-carboxylic acid reduction

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