Sodium, Methyl

Decision recognizing the dossiers for the possible inclusion of mesotrione, lodosulfuron-methyl-sodium, silthiopham and ghocladium catenulatum in Annex I to Directive 91/414/EEC concerning the placing of plant-protection products on the market... 

SODIUM METHYLATE SODIUM MONOXIDE SODIUM NITRATE SODIUM NITRITE... 

A ( )-Enol-l 1-acetates are formed by distillation of acetic anhydride in the presence of / -toluenesulphonic acid. Another procedure employed for the synthesis of enol benzoates involves treatment with benzoic anhydride and triphenyl methyl sodium or ethynyl sodium. Suitable procedures utilizing a diluent have been developed for the enol esterification of a 20-ketone without affecting an 11-ketone. 

Pivorarenko and Khilya investigated a series of organic bases including tribenzyl amine, sodium methylate, sodium terf-butylate, n-methylmorpholine,... 

Triphenyl methyl sodium did not even produce crystallinity in hexane in which triphenyl sodium is also insoluble. 

Methyl (sodium a-L-idopyranosyluronate)-(1 - 4)-(2-acetamido-2-deoxy-a-D-glucopyranosyl)-(1 ->4)-(sodium P-D-glucopyranosyluronate)-(1 ->3)-P-D-galactopyranoside... 

The structure of narlumidine (119) was established by Dasgupta et al. (117,119) on the basis of spectral data, particularly by comparison with spectra of bicucullinine (108), and also on chemical grounds. On hydrolysis followed by oxidation-methylation, narlumidine (119) was converted to ester 147, which was also obtained from 108 by N.O-methylation. Sodium borohydride reduction gave lactone 145, identical to the lactone obtained from 108. 

Sodium p-toluenesulfinate p-Toluenesulfinic acid, sodium salt (8) Benzenesulfinic acid, 4-methyl-, sodium salt (9) (824-79-3)... 

The marine facultative anaerobe bacterium Serratia marinoruhm and the yeast Rhodotoruhi rubra both methylate arsenate ion to methylarsonate, but only the latter produces cacodylic acid (258). Human volunteers who ingested 500 fig doses of As as sodium arsenite, sodium methylarsonate, and sodium cacodylate excreted these compounds in their urine (259). Of these three, approximately 75% of the sodium arsenite is methylated, while 13% of methylarsonate is methylated. Rat liver subcellular fractions methylated sodium arsenate in vitro, providing the first direct evidence for possible mammalian methylation independent of symbiotic bacteria (260). Shariatpanahi el al. have reported kinetics studies on arsenic biotransformation by five species of bacteria (261). They found that the As(V)-As(IIl) reduction followed a pattern of two parallel first-order reactions, while the methylation reactions all followed first-order kinetics. Of the five species tested, only the Pseudomonas produced all four metabolites (arsenite, methylarsonate, cacodylate, trimethylarsine) (261). 

While method A furnished only dimethyl(vinyl)silane (see Section IILC.l.a), the Wurtz reaction (method B) in an inert solvent gave a mixture of products which stem either from the a-elimination generating 3a or from the C,C coupling process leading to 158 (equation 38)55. It is assumed that 3a forms 1,1-dimethylsilirane by 1,3-C,H insertion (cf equation 23) and that C,C and Si,C cleavage of this sensitive ring system by (trimethylsi-lyl)methyl sodium is responsible for the formation of 159-161 (combined yield 32%). It is obvious that, due to the complexity of this reaction, method B cannot serve as a versatile entry into the chemistry of 3a. 

Second, methyl ester 61 is subjected to crossed ester condensation with methyl formate and triphenyl methyl sodium 64 as base.5,6 Ester 61 is deprotonated and the resulting anion 65 adds to methyl formate. The anion formed is stabilized by loss of methanolate yielding the desired product as its conjugated base. As a Claisen type ester condensation, all steps but the last are reversible since the resulting aldehydo ester 67 is more acidic than methanol therefore the last deprotonation step occurs irreversibly. The use of LDA19 as a base is also possible for this transformation. 

N1. BENZENEACETIC ACID. 3-BENZOYL-alpha-METHYL-. SODIUM SALT... 

N1 - 2H-PYRAN-2,4C 3H)-OIONE 3-ACETYL-6-METHYL-, SODIUM SALT RN - 4416-26-2... 

Ethyl-2-pyridyl)ethanol Copper oxide Sodium hydride Sodium methylate Sodium acetate... 

A facile, one-pot synthesis of an alkylated tetrahydrofuranone intermediate was applied to the synthesis of a novel hexahydrofuro[3,4-6]furan derivative <83TL2335>. Reaction of methyl acrylate with methyl sodium benzilate in DMSO gave the intermediate 3-oxo ester carbanion, which was alkylated with allyl bromide to yield the tetrahydrofuranone derivative (408). Subsequent hydrolysis and decarboxylation of (408), followed by reduction with lithium tri-r-butoxyaluminum hydride gave compound (409), which with excess iodine and Na2C03 afforded an 85 15 mixture of the epimers (410a) and (410b) in 95% yield (Scheme 38). 

Methyl piperidone piperophos Methyl propynol chlorbufam Methyl sodium sulfide dithiopyr... 

Benzenesulfonamide, A -chloro-4-methyl-, sodium salt, trihydrate [7080-50-4], 61, 85 BENZENESULFONAMIDE, N-(2-... 

A facile access to racemic 2-substituted ferrocenecarboxaldehydes 140 has been developed through a two-step protocol involving ort/ro-lithiation/electrophilic quenching of readily accessible 2-ferrocenyl-4,4-dimethyloxazoline 138, followed by iV-methylation, sodium borohydride-mediated reduction, and acidic hydrolysis of substituted derivatives 139 <07T1907>. 

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