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- Lead dioxide may also be prepared by the hydrolysis of lead[IV] salts; for example, lead tetrachloride may be hydrolyzed in cold hydrochloric acid solution, or a saturated solution of lead tetraacetate may be hydrolyzed in glacial acetic acid. pbO2还可以通过水解四价铅盐的方法来制备,例如,pbCl4可以在冷的盐酸溶液中水解;而pb(OAc)4的饱和溶液可以在冰醋酸中水解。
- Then the protected D-mannitol, mixed with lead tetraacetate, hippuric and acetic anhydride, were refluxed in THF for 18 h in a one-pot two step reaction to afford a chiral precursor (Z)-2-phenyl-4-[(S)-2,3-O-(isopropylidene)]-propylidene-5(4H)-oxazolones. 产物与四乙酸铅、马尿酸、乙酐于THF中回流18 h完成一釜二步反应,纯化后得到含有手性碳原子的环丙烷氨基酸前体(Z)-2 苯基-4-[(S)-2,3-O-(异丙叉)]丙叉?f唑-5-酮,前体中的手性碳原子可作为环丙烷氨基酸衍生物不对称合成的手性源;
- Determination of Sulfides in Gasoline by Lead Tetraacetate 四乙酸铅电位滴定法测定汽油中的硫醚硫
- Keywords Pinene;Oxidation with lead tetraacetate;Perillyl alcohol; 蒎烯;四醋酸铅氧化;紫苏醇;
- Keywords thioethers;residual oil;lead tetraacetate;potentiometric titration; 硫醚;减压渣油;四乙酸铅;电位滴定;
- Keywords 2(10)-pinene;lead tetraacetate oxidation;ring-enlargement reaction;seven-member-cyclo-ketone; 关键词2(10)-蒎烯;四醋酸铅氧化反应;扩环反应;七元环酮;
- Keywords Lead Tetraacetate;p-Methoxyphenylaceyone;Indirect Organic Electrochemical Synthesis;Lead Acetate;Anethole; 四醋酸铅;对甲氧基苯基丙酮;间接有机电合成;醋酸铅;茴香脑;
- Keywords lead tetraacetate;indirect electrochemical organic synthesis;undivided compartment;acetophenone;styrene; 四醋酸铅;间接有机电合成;无隔膜电解;苯乙酮;苯乙烯;
- The horse forged ahead the lead in the homestretch. 那匹马在最后阶段突然加速跑到前面。
- Shirley will try out for the lead in the play. 雪莉将参加该剧主角的选拔演出。
- Excessive patriotism can lead to xenophobia. 爱国主义过了头即可导致仇视一切外国人。
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- Graphite is used in making lead pencils. 石墨常被用来做成铅笔。
- Lead will fuse at quite a low temperature. 铅会在相当低的温度下熔化。
- The team recovered its lead in the second half. 该队在下半场重新领先。
- No road of flowers lead to glory. 没有一条通往光荣的道路是铺满鲜花的。
- Copper has less resistance than lead. 铜的电阻比铅的小。
- I'll take part, but I won't want to lead. 我参加,但不想当领导。
- Alice has the lead in the school play. 艾丽斯在学校演出的戏剧中担任主角。
- We need someone with real vision to lead the party. 我们需要具有真知灼见的人来领导这个党。
