contg. an anilidovinyl- or phenylimino-ethylidene gp., effected in the presence of an aliphatic acid anhydride and of a tert. aliphatic amine. Reaction is fast, allowing prepn. in the cold, and dyes are obtd. in high yield.GLOCKNER, HANS, DR., PULLACH...
and the imidazolyl ring of histidines. However, acylation of cysteine, tyrosine, andhistidineside chains forms unstable complexes that are easily reversible to regenerate the original group. Only amine functional groups of proteins are stable to acylation with anhydride reagents, formingamidebonds (Fraen...
Shriner RL, Ford SG, Roll LJ (1931) Itaconic anhydride and itaconic acid. Org Synth 11:70–72 CAS Google Scholar Linstead RP, Mann JTW XCIX (1931) Investigations of the olefinic acids. Part IV. The two types of tautomerism of itaconic acids and the connexion between configurational and ...
alkaryl or alkylhalo sulfonate to yield a sulfonic-carboxylic anhydride compound which is then reacted with a dioxane to cleave the ring of the dioxane, yielding a cleavage product which cleavage product is then aminated with an alkylamine and hydrolyzed with base to yield the severely stericall...
Phthalic acids (1,2- 1,3- and 1,4-benzenedicarboxylic acids) are the simplest aromatic dicarboxylic acids. Thermal decomposition of o-phthalic acid (1,2-benzenedicarboxylic or simply phthalic acid) starting around 200°C leads to the formation of phthalic anhydride by the reaction: (12.2.19) ...
Reacts with sulfides, carbides, borides, and phosphides to generate toxic or flammable gases. Reacts with many metals (including aluminum, zinc, calcium, magnesium, iron, tin and all of the alkali metals) to generate flammable hydrogen gas. Reacts violently with acetic anhydride, 2-amino...
Succinic anhydride is the dehydration product of the acid. Succinic acid was first obtained as the distillate from amber (Latin, Succinum) for which it is named. It occurs in beet, brocoli, rhubarb, sauerkraut, cheese, meat, molasses, eggs, peat, coal, fruits, honey, and urine (Gardner,...
6-N derivatives of neamine with alanine, phenylalanine and lysine were synthesized either using an active esters method in one step under controlled conditions, or using a mixed anhydride method after blocking every functional group of neamine and leaving the 6-amino group free to react. ...
The manufacturing method of Carbon acid anhydrides and the manufacturing method of γ-Bu Qiluolidun PROBLEM TO BE SOLVED: To provide an industrially advantageous method for efficiently forming carboxylic acid anhydride by dehydration condensation reaction... 谷口 翔平,小西 範和,井澤 雄輔,... 被引...
the acetylation of the 1-hydroxy or 1-amino or 1-amido derivatives, etc., disclosed above, with the appropriate acid chloride or acid anhydride. R6 may be ##STR27## as well, when said 1-hydroxy, or 1-amino or 1-amido derivatives are reacted with the appropriate ortho ester. Similarly...