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- squaric acid dibutylester 斯夸酸二丁酯
- In the chemistry of squaric acid, we find first that 1,3- diaryl iso - squarylium amide can react with HMPA and other carboxylic amides. 研究了1,3-双芳基异方酰胺与六甲基磷酰三胺(HMPA)及其它羧酰胺的反应制得了15个既含芳胺基又含脂肪基的不对称方酰胺。
- This novel reaction can be used for effective preparation of asymmetric amide of squaric acid containing aryl and dimethylamino, methylamino, ethylamino. 该反应提供了制备既含芳胺基又含二甲胺基、甲胺基和乙胺基的不对称方酰胺的较为有效的方法。
- Different synthetic routes of squaric acid(3,4 dihydroxy cyclobutene 1,2 dione) are summarized . The limitations and advantages of particular routes are discussed. 介绍了方酸 (3 ,4 二羟基 3 环丁烯 1,2 二酮 )的各种合成方法 ,评述了有机化学、电化学、生物发酵等方法合成方酸的进展及应用前景。
- Finally, some novel BCB derivates containing the squaric acid unit have been synthesized and we expected they can be used as polymeric electroluminescent materials. 首次合成了多种新型苯并环丁烯-方酸类衍生物,并对它们的结构进行了详细的表征和讨论,有望形成高分子型电致发光材料。
- Twenty five asymmetric amides of squaric acid and twenty four asymmetric iso squarylium amides which were not reported in references yet are synthesized by N arylnitrogenoxosquaric acid reacting with primary arylamine in 95% ethanol and HOAc. 以乙醇等为介质，芳伯胺与7种N－芳基氮氧方酸反应，制得25个不对称的方酰胺和24个不对称的异方酰胺。
- Different synthetic routes of squaric acid(3,4 dihydroxy cyclobutene 1,2 dione) are summarized . The limitations and advantages of particular routes are discussed. 29 references are presented. 介绍了方酸(3,4二羟基3环丁烯1,2二酮)的各种合成方法,评述了有机化学、电化学、生物发酵等方法合成方酸的进展及应用前景。参考文献29篇。
- SYNTHESIS OF MONO CARBAMOYL AMIDE OF SQUARIC ACID 氨甲酰类氮氧方酸的合成研究
- chiral squaric acid amidoalcohol 手性方酰化氨基醇
- Keywords mono carbamoyl amide of squaric acid;urea;cyclobutenedion; 氨甲酰类氮氧方酸;脲;环丁烯二酮;
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Keywords pyrylium;squaric acid;cyanine;solubility;UV - Vis spectrograph; 吡啶鎓盐;方酸;菁染料;溶解度;紫外-可见吸收光谱;
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- Keywords squarylium amide;amides;cyclobutenedione;chemistry of squaric acid; 异方酰胺;酰胺;环丁烯二酮;方酸化学;
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗？那是个严峻的考验。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- She dropped acid in high school. 她高中时代服迷幻药。
