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- Keywords Halocarbene;Carbonyl Ylide;Deoxygenation; 卤代卡宾;羰基叶立德;脱氧;
- Keywords crystal structure;dichlorocarbene;carbonyl ylide; 羰基叶立德;二氯卡宾;晶体结构;
- Keywords: crystal structure, dichlorocarbene, carbonyl ylide, 关键词:羰基叶立德,二氯卡宾,晶体结构
- Keywords Carbonyl ylide;Dihalocarbene;Push-pull stabilization;Reaction mech-anism; 羰基叶立德;二卤卡宾;“推-拉”稳定作用;反应机理;
- carbonyl ylide 羰基叶立德
- Cyclopropane carbonyl chloride is an important intermediate. 环丙甲酰氯是一种重要的中间体。
- The temperature of carbonyl synthesis reaction is studied. 摘要对羰基合成反应的温度进行了研究。
- How to choose the base used in the synthesis of arsine ylide is studied. 本文主要研究了胂叶立德合成中碱的选择。
- Chlorotyrosine was not elevated in patients with high MPO or carbonyl levels. MPO或蛋白质羰基升高的病人3-氯酪氨酸并不升高。
- Influence of concentrationof carbonyl ironon static magnetism was not obvious. 五羰基铁浓度对复合粒子的静磁性能影响不明显。
- Chlorotyrosine was not eleated in patients with high MPO or carbonyl leels. MPO或蛋白质羰基升高的病人3-氯酪氨酸并不升高。
- Reaction of Carbonyl Compounds with Grignard and Organolithium Reagents. 醇,醛与酮和羧酸之间的氧化还原关系。
- This method represents a useful conversion of the carbonyl group to the amino group. 它成为一个使羰基变为氨基的有效方法。
- This approach to carbonyl compounds also allows the synthesis of either optical antipodes. 这个一氧化碳合成方法也可以制备任何一个旋光对映体。
- Interestingly, the stereoselectivity of ylide cyclopropanation could be controlled by the choice of the base used for the formation of ylide. 有趣的是,选择不同的碱,能够控制该叶立德环丙反应的立体化学。
- The surface lipids undergo oxidation generating many compounds containing hydroxyl and carbonyl groups. 表面的类脂物氧化后,产生许多化合物,包括羟基和羰基化合物。
- METHODS 3,4,5-trimethoxy-triphenyl benzylidene bromide phosphine salt,the important precursor of the phosphine Ylide,was synthesis from deoxidize,bromization and addition. 方法以3,4,5-三甲氧基苯甲醛为原料,经过还原、溴代、加成三步反应得到叶立德前体3,4,5-三甲氧基苄溴三苯基膦盐。
- Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group. 重点强调取代、消除反应和含羰基基团的化学性质。
- The most important chemistry of dithianes, however, lies in their ability to act as a masked carbonyl group. 然而二硫杂环已烷的最重要的性质是它作为一个被掩蔽的羰基。
- Methods:Using bromoactate as starting material, ylide was prepared.Ylide and fullerene were used to produce the methano[C60] fullerene carboxylate and hydrolyze it. 方法:用溴乙酸乙酯制备硫叶立德,再与富勒烯[C60]制得相应的富勒烯[C60]羧酸乙酯,水解其乙酯。