2- alkanoate ester amine

Insertion into Si-H bonds. a-Silyl esters are similarly obtained. From R2Si(Cl)H the products are readily converted into o-(alkoxysilyl)alkanoic esters. Heterocyclization. Formation of a-alkylidene lactams by carbonylation of alkynyl amines and cyclization of 2-allyloxybenzylamines with allylic rearrangement are reported. 

Isomerization of silyl ketene acetm by migration of the silyl group from ox alkanoic esters, is very facile (5 min. r Friedel-Crafts acylation. The recovered and reused without decrease Cleavage of small heterocyeles. opened with amines when catalyzed b with the pressure reaction."... 

Ester aminolysis and hydrolysis coi Alkylammonium alkanoates. The amine can react nucleophilically or as a general base Rates of decarboxylation compared in various solvents and in aq. micelles, reversed micelles and vesicles M. I. El Seoud et al., 1982 Sunamoto et a/., 1983a... 

This model is based on Sw data spanning 5 log units. Nirmalakhandan and Speece [36,37] discuss the model s validity and robustness in detail. They performed a test using experimental Sw data for esters, ethers, and aldehydes that were not included in the training set. They noted reasonably good agreement between experimental and estimated data for the test set and indicated that eq. 11.5.4 is applicable to dialkyl ethers, alkanals, and alkyl alkanoates, but not for ketones, amines, PAHs, and PCBs. Nirmalakhandan and Speece [37] expanded the model above for the PAHs, PCBs, and PCDDs. However, their model has been criticized by Yalkowsky and Mishra for incorrect and omitted data [38]. The revised model is [38]... 

Carboxy terminal amino acid or peptide thiols are prepared from various p-amino alcohols by conversion into a thioacetate (R2NHCHR1CH2SAc) via a tosylate followed by saponification.Several methods have been used to prepare N-terminal peptide thiols, the most common procedure is the coupling of (acetylsulfanyl)- or (benzoylsulfanyl)alkanoic acids or add chlorides with a-amino esters or peptide esters, followed by deprotection of the sulfanyl and carboxy groups. 8 16 Other synthetic methods include deprotection of (trit-ylsulfanyl)alkanoyl peptides, 1718 alkaline treatment of the thiolactones from protected a-sulfanyl acids, 19 and preparation of P-sulfanylamides (HSCH2CHR1NHCOR2, retro-thior-phan derivatives) from N-protected amino acids by reaction of P-amine disulfides with carboxylic acid derivatives, followed by reduction. 20,21 In many cases, the amino acid or peptide thiols are synthesized as the disulfides and reduced to the corresponding thiols by the addition of dithiothreitol prior to use. 

A stimulating development of urea alcoholysis has been demonstrated very recently for better AE, in an innovative integrated process that incorporates fatty ester hydrolysis to co-amino-alkanoic acids [44], Within the scope of this chapter, the most interesting step of this process is the recycling of waste alcohol, formed by the hydrolysis step, for urea alcoholysis. Dialkyl carbonate is produced together with ammonia thereafter, the ammonia is engaged in the amination reaction to obtain the amino acids. The overall process avoids the storage of NH3 that is necessary for the amination route, and transforms a waste product-the alcohol-into the valuable dialkyl carbonate. 

Ester aminolysis Alkylammonium alkanoates. The amine M. I. ElSeoudetal., 1982... 

Phenoxyalkanoic acids are formulated as esters and amine salts and chemical hydrolytic mechanisms are considered responsible for the rapid conversion of the phenoxyalkanoic esters to the corresponding phenoxy-alkanoic anion in moist soils ( 5). The dimethylamine salt of 2,4-D similarly undergoes chemical conversion in the soil, by dissociation, to the acid anion (5j. However, abiotic processes do not appear to result in any significant degradation of phenoxyalkanoic acids in the soil (5j. 

Amine oxides of the same kind are manufactured by reaction of alkanoic acids and their esters with N,N-dimethyl-l,3-propanediamine and subsequent oxidation of the amino amide by hydrogen peroxide [9] ... 

Bis(trimethylsilyl)monoperoxysulphate, being non-acidic, is preferential to Caro s acid as a reagent for Baeyer-Villiger oxidations. j8-Aryloxyethyl esters can be prepared from aryl alkanoates in good yields by reactions with epoxides at 140—170 °C in the presence of an amine. ... 

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