Amino and amide group-containing polyester polyols prepared therefrom and poly (urea) urethane Advanced, etherified aminoplast resins containing one or more guanamine residues are prepared by heating, at a pH of from 2.5 to 9, an etherified methylola... M Beck,R Hombach,W Meckel 被引量: ...
Gln is an α-amino acid used in protein synthesis. It is structurally similar to glutamate, but the carboxylic acid group of the side chain is replaced by an amide. Gln is a non-essential amino acid obtained from food121and the most consumed amino acid and is involved in synthesizing all ...
A process for preparing a formaldehyde-free amino resin or amide resin comprising (i) reacting an amine or amide having 2-3 amine or amide groups with a monoaldehyde having at least 2 carbon atoms to form an intermediate, which has at least one amine group or amide group a reactive protec...
A subsequent survey of possible dioxazolone components revealed a wide range of aromatic (4a–4h), alkenyl (4i) and aliphatic (4j–4v) amide electrophiles as competent substrates (Fig. 4)66,67,68,69. For aromatic amide electrophiles, both electron-donating (4b–4d) and electron-withdrawing...
Polar (hydroxy, hydroxy, sulphur-containing, amide, amide side chains, respectively) Serine Ser S 5.68 −0.8 105.1 Threonine Thr T 5.87 −0.7 119.1 Cysteine Cys C 5.07 2.5 121.1 Asparagine Asn N 5.41 −3.5 132.1 Glutamine Gln Q 5.65 −3.5 146.1 Polar positively charged basic, amino si...
98 Addition of lithium amide 322 to Michael acceptor 321 produced the Michael adduct 323 in 75% yield and >98% de. The α-methylbenzyl group was removed with PPh3 and N,N-dimethylbarbituric acid. However, de protection of the allylic group with Pd catalyst generated some dehalogenated by-...
PackingGroupIII HS Code29221990 Hazardous Substances Data124-68-5(Hazardous Substances Data) ToxicityLD50 orally in Rabbit: 2900 mg/kg LD50 dermal Rabbit > 2000 mg/kg MSDS Information ProviderLanguage SigmaAldrichEnglish ALFAEnglish 2-Amino-2-methyl-1-propanol Usage And Synthesis ...
HazardClass 8 PackingGroup II HS Code 29221980 Hazardous Substances Data 111-41-1(Hazardous Substances Data) Toxicity LD50 orally in Rabbit: 3000 mg/kg LD50 dermal Rabbit > 2000 mg/kg NFPA 704 1 3 0 2-(2-Aminoethylamino)ethanol price More Price(18) ManufacturerProduct numberProduct descripti...
Gln, Asn and Arg are also hydrolyzed by asparaginase, glutaminase, and arginase to release amide groups16. The accumulation of free amino acids is resultant of biosynthesis and catabolism. Previous studies showed that feedback inhibition loops control amino acid biosynthesis in plants17. Here, the ...
azides react withtriphenylphosphinereagents containing anelectrophilictrap to produce an aza-ylide intermediate that reacts with the electrophilic ester carbonyl group forming a five-membered ring that undergoes hydrolysis to generate a final stable amide bond (Fig. 5.6A) (Steen Redeker et al., 2013;...