本发明揭示一种具有下式(Ⅰ)结构之具梳型块状交替分子结构之胺硅氧烷聚合物;其中R′为(C The invention discloses a having the formula (Ⅰ) comb-shaped block structure with alternating siloxane polymer molecular structure of the amine; wherein R 'is (C...
OF FORMALDEHYDE, ACETALDEHYDE OR MIXTURES THEREOF; ANDSAID AMINE CONTAINING COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF:N''N''-DI-SUBSTITUTED-P-PHENYLENE DIAMINES OF THE STRUCTURAL FORMULA:FORMULA 1WHEREIN R1 AND R2 ARE INDEPENDENTLY SELECTED FROM THE GROUP OF RADICAL CONSISTING OF ALKYLS ...
HIGH-MOLECULAR WEIGHT AMINE STABILIZING AGENT FOR 优质文献 相似文献Tinuvin® P in a spandex tape as a cause of clothing dermatitis We report a 54-year-old female with allergic Contact dermatitis from 2-(2-hydroxy-5-methytphenyl) benzotriazole (Tinuvin庐 P) in a spandex tape sewn into u....
and particularly in soils, sediments, and natural water. HS play key roles in many processes of paramount importance, such as plant growth, carbon storage, and the fate of contaminants in the environment. While most of the research on HS has been traditionally...
confirmed thatYpDHPS as well as other orthologs operate via a SN1 reaction mechanism, initiated by the binding of DHPP to the active site, elimination of pyrophosphate, leaving a carbocation form of the pterin (DHP+) that reacts with the weakly nucleophilicpABA amine group to form 7,8-DHP...
The optimised preparation is a one-pot procedure consisting of three reactions (see also Scheme 1): The formation of a lithium amide by the reaction of an amine with nBuLi. TMEDA is added in this step to increase the reactivity of the nBuLi and reduce the reaction time. Additionally, inte...
6. The molecular sieve as in claim 5 wherein X is --(CH2)mZ wherein m is from 1 to 10 and Z is selected from the group consisting of cycloalkenyl, aryl, heteroaryl, and a functional group selected from the group consisting of alcohol, sulfonic acid, thiol, amine, amide, nitro, car...
However, the biosynthetic mechanism of azoxy bond remains enigmatic. Here we report that the azoxy bond biosynthesis of azoxymycins is an enzymatic and non-enzymatic coupling cascade reaction. In the first step, nonheme diiron N-oxygenase AzoC catalyzes the oxidization of amine to its nitroso ...
The reason is probably that glucose is less likely to react with the amine groups of proteins. The reaction between carbohydrates and proteins, called glycation, is a natural part of aging and consequence of some diseases (e.g., diabetes) that impairs the functioning of proteins. In contrast,...
FT-IR spectrum of compound 7c showed absorption peak at 3377 cm−1 for the NH group and strong carbonyl stretching at 1792 cm−1. That of 1H NMR spectra showed broad singlet at δ 11.30 due to secondary amine proton and multiplet in the range of δ 7.67–8.08 corresponds to four ...