Ester - Wikipedia
In chemistry, an ester is a functional group derived from an acid (organic or inorganic) in which the hydrogen atom (H) of at least one acidic hydroxyl group (−OH) of that acid is replaced by an organyl group (R ′). Analogues derived from oxygen replaced by other chalcogens belong to the ester category as well. [1]
Diester - an overview | ScienceDirect Topics
A diester is a type of compound known for its high viscosity index, low pour point, and resistance to antioxidants, making it suitable for use in aviation gas turbines. It offers improved load carrying capacity in gear rigs and provides superior protection against surface fatigue in heavily loaded ball and roller bearings compared to mineral oil.
Synthesis, properties and thermokinetics of a kind of diesters as …
2022年3月15日 · Crystallization kinetics of the relevant diester and monoester were analyzed to explain the thermophysical property differences. The desired thermophysical properties can be realized by pre-designing the molecular structure of the ester PCMs.
9.8: Phosphate Diesters in DNA and RNA - Chemistry LibreTexts
2022年7月20日 · Phosphate diesters play an absolutely critical role in nature - they are the molecular 'tape' that connect the individual nucleotides in DNA and RNA via a sugar-phosphate backbone. Take note of the 1' - 5' carbon numbering shown below for the ribose sugar - these numbers will be used frequently in the coming discussion.
Diester Definition & Meaning - Merriam-Webster
The meaning of DIESTER is a compound containing two ester groups.
DIESTER中文(简体)翻译：剑桥词典 - Cambridge Dictionary
diester. noun [ C ] chemistry specialized uk / daɪˈes.tə r/ us / daɪˈes.tɚ /. Add to word list. a chemical compound that contains two ester groups. 二酯. the diester of malonic acid 丙二酸二 …
diester - 百度百科
diester，英语单词，主要用作名词，作名词时译为“[有化] 二酯；二元酸酯”。
The Dieckmann Cyclization - Chemistry LibreTexts
identify the diester needed to prepare a given cyclic β‑keto ester by an internal Claisen condensation. identify the structural features present in a diester that lead to the formation of more than one product in an internal Claisen condensation.
Organophosphate (OP) diesters and a review of sources, chemical ...
2021年10月1日 · OP diesters are known as biotic or abiotic degradation products of OP triesters. In recent years, environmental scientists have proven that OP diesters widely exist in a variety of environmental matrices and biotic samples around the world, implying the potential risks from OP diester exposure to biota and humans in the environment.
23.9: The Claisen Condensation Reactions of Esters
Esters can also undergo condensation reactions called Claisen Condensations. When the reaction occurs within a diester, it forms a ring and is called a Dieckmann Condensation.