Phosphines翻译
WebHe and co-workers have demonstrated the use of the known cage-like, air-stable trialkylphosphine, 1,3,5-triaza-7-phosphaadamantane (PTA), in organocatalysis, and specifically in the Morita-Baylis-Hillman (MBH) reaction ( Table 1 ). Traditionally, MBH reactions are conducted using DABCO ®, but slow reaction rates often hamper its utility. Webmodifier. La phosphine a, hydrure de phosphore, phosphure d'hydrogène, ou phosphane (nomenclature IUPAC) est un composé inorganique du phosphore et de l' hydrogène, de formule PH 3 . À température et pression ordinaires, la phosphine est un gaz hautement écotoxique, phytotoxique 13, hautement toxique pour les mammifères (dont l' être ...
Phosphines翻译
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WebPhosphine definition, a colorless, poisonous, ill-smelling, flammable gas, PH3. See more. WebSep 14, 2024 · A chemical you've likely never heard of has burst into the news thanks to scientists' announcement that they have detected phosphine, which they say may be a sign of life, in the clouds of Venus ...
WebDec 23, 2024 · Chiral phosphorus compounds, such as phosphonates and phosphines, are widely used in materials science 1, agrochemistry 2, drug development 3, oligonucleotide synthesis 4 and as ligands for metal ... WebJun 10, 2011 · 豆丁网是面向全球的中文社会化阅读分享平台，拥有商业,教育,研究报告,行业资料,学术论文,认证考试,星座,心理学等数亿实用 ...
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WebThe addition of phosphine to cod gave a mixture of isomeric secondary phosphines, corresponding to the 1,4- and 1,5-addition products. Subsequent alkylation, followed by …
Web有道翻译提供即时免费的中文、英语、日语、韩语、法语、德语、俄语、西班牙语、葡萄牙语、越南语、印尼语、意大利语、荷兰语、泰语全文翻译、网页翻译、文档翻译、pdf翻译 … city center developmentWebNov 3, 2024 · phosphine: [noun] any of various derivatives of phosphine analogous to amines but weaker as bases. city center deutsche postWebJan 26, 2010 · phosphite和phosphate除了译作酯外还可以译作亚磷酸盐和磷酸盐. phosphonite和phosphonate就只能当作酯解释了. 至少我从化工引擎 … city center design standards bellinghamWebPhosphines are nucleophilic catalysts in organic synthesis, e.g. the Rauhut–Currier reaction and Baylis-Hillman reaction. Protonation and deprotonation [ edit ] Like phosphine itself, … dick\\u0027s waterfrontWebThe development of some new synthetic reactions derived from nucleophilic addition of phosphines to electron-deficient carbon-carbon triple bonds is described. These reactions show that the phosphine plays the role of a nucleophile as well as an excellent leaving group. The central problem is to generate a 1,3-dipole from alkynoates or ... city center development llcWebTertiary phosphine oxides are the most commonly encountered phosphine oxides. With the formula R 3 PO, they are tetrahedral compounds. They are usually prepared by oxidation of tertiary phosphines. The P-O bond is short and polar. According to molecular orbital theory, the short P–O bond is attributed to the donation of the lone pair ... dick\u0027s waterfront homesteadhttp://www.ilpi.com/organomet/phosphine.html dick\\u0027s waterford