An atom efficient esterification could be achieved using hafnium(IV) or zirconium(IV) salts.
No./Substance: 0/Iodides; 0/Peptides; 0/Quaternary Ammonium Compounds; 0/Reducing Agents; 0/Sulfides; 63-68-3/Methionine; 75-18-3/dimethyl sulfide From medline/PubMed, a database of the.S.Publication Detail: Type: Journal Article; Research Support, Non-U.S.A Ti-crossed Claisen condensation between ketene silyl (thio)acetals and acid chlorides gave -monoalkylated (thio)esters and thermodynamically unfavorable,-dialkylated -keto (thio)esters in good yield.Molecular Sequence Data, oxidation-Reduction, peptides / chemistry* Quaternary Ammonium Compounds / chemistry Reducing Agents / chemistry* Sulfides / chemistry Chemical Reg.Reduction of ethanethiol esters of -amino acids to -amino aldehydes by triethylsilane and catalytic palladium-on-carbon is described.Acid-sensitive alcohols are smoothly acetylated without competitive side reactions.Organic Chemistry Portal, reactions Organic Synthesis Search, categories: C-S Bond Formation Related.The pyridine hydrazine byproduct can be simply reoxidized.A thiazolium precatalyst facilitates electrochemical oxidation of thiolate anions, leading to deleterious formation of disulfide byproducts.The fairly mild reaction conditions are of particular interest for new protecting group strategies for sulfur functionalised target structures.N promo destock 33127 -acylbenzotriazoles under mild conditions.Authors: Christian ackenberger, related Documents :, affinity purification of synthetic peptides., nutritional ecology: a first vegetarian spider.With the same precatalyst, both aliphatic and aromatic aldehydes can be transformed into the corresponding gem-diacetates under reflux conditions.N -urethane-protected -amino/peptide thioacids from their corresponding acids and Na2S is mediated by EDC.Various alcohols, phenols, amines and thiols may easily be converted into acetate derivatives by treatment with acetic anhydride in the presence of acetonyltriphenylphosphonium bromide in good yields at room temperature.Diverse thiol esters were synthesized in good yields by reactions of thiophenol, benzyl mercaptan, ethyl mercaptoacetate, and mercaptoacetic acid with.In this contribution, we demonstrated that carboxylic acid thioesters could be readily reduced by a range of alcohol dehydrogenases, albeit at significantly reduced rates relative to those observed for corresponding ketones.
Document Detail, the reduction of oxidized methionine residues in peptide thioesters with NH4I-Me2S.
This new reagent facilitates the isolation of its hydrazine byproduct without restricting the reaction scope.
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