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- Keywords multicomponent reaction;metal-catalyzed;diazo compounds;1;3-dipolar cycloaddition;ammonium ylide;oxonium ylide; 金属催化;重氮化合物;1;3-偶极环加成反应;铵基叶立德;氧鎓叶立德;
- oxonium ylide 氧鎓叶立德
- 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。
- The rearrangement of acetone oxime in the Beckmann solution involves three acetic acid molecules and one proton (present as an oxonium ion). 模拟表明，有三个乙酸分子和一个质子（以氧鎓的形式纯在）参与了反应。
- 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。
- 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。
- 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。
- Three strategies (additive, chiral auxiliary or chiral reagent) were developed to improve the diastereoselectivity or enantioselectivity of the ylide cyclopropanation reactions. 通过添加剂、手性辅基、手性试剂等3种策略,分别控制反应的非对映选择性和对映选择性。
- Synthesis of Arsonium Ylide's Precursors 砷叶立德前体化合物的合成
- Keywords Halocarbene;Carbonyl Ylide;Deoxygenation; 卤代卡宾;羰基叶立德;脱氧;
- Keywords Ylide;Alkyne;Organo-fluoro compound; 叶立德;炔烃;含氟有机化合物;
- Keywords DL-valine;hexachloroacetone;carbene;azomethine ylide; 关键词DL-缬氨酸;六氯丙酮;卡宾;亚胺叶立德;
- Keywords Arsonium ylide;Hydrolysis;2-Pyranone derivatives; 胂叶立德;水解;2-吡喃酮衍生物;
- Keywords crystal structure;dichlorocarbene;carbonyl ylide; 羰基叶立德;二氯卡宾;晶体结构;
- Keywords vinyloxirane;sulfonium ylide;aldehyde;lithium bromide; 乙烯基环氧化合物;硫叶立德;醛;溴化锂;
- Keywords: crystal structure, dichlorocarbene, carbonyl ylide, 关键词:羰基叶立德,二氯卡宾,晶体结构
- Keywords carbyne complexes;phosphorus ylide;Niobium;Tantalum; 卡拜化合物;膦叶立德;铌;钽;
- Keywords synthesis;fullerene;ylide;fullerene [C60]carboxylic acid; 合成;富勒烯;硫叶立德;富勒烯[C60]单羧酸;
- Keywords Fullerene;1;3 - Dipolar Cycloaddition;Pyrrolidine;Azomethine Ylide; 富勒烯;1;3-偶极环加成反应;吡咯烷;亚胺叶立德;
- Keywords Spiro-heterocycle;Azomethine ylide;Cycloaddition;Synthesis; 螺杂环;甲亚胺叶立德;环加成;合成;
