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- Keywords vinyloxirane;sulfonium ylide;aldehyde;lithium bromide; 乙烯基环氧化合物;硫叶立德;醛;溴化锂;
- sulfonium ylides 锍叶立德
- The sulfonium salt has better curing character to epoxy resin. 该硫鎓盐对环氧树脂具有良好的固化性能。
- 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 sulfonium salt(CH_3)_2SCH_2CH=CCl_2Cl(2)was synthesized from dimethyl sulfide and 1,1,3-trichloro-1-propene. 以二甲硫醚和1,1,3-三氯-1-丙烯反应合成了锍盐2,经碱处理形成(?)
- A group of multi substituted phenols were prepared via intramolecular wittig reaction of a kind of long chain phosphonic ylides. 一类含六个碳的长链叶立德通过分子内维蒂希反应可生成含氟多取代苯酚 .
- However,corrosion inside the bricks was mainly because of sulfonium penetration through open pores,crystal interfaces and micro-cracks. 锍渗透的主要途径为开口气孔、晶界及微裂纹。
- The acid-forming performance of novel sulfonium salts and s-triazinyl derivatives were evaluated by the method ascertained in our laboratory. 利用研究室确定的测定产酸效率的方法对新型硫鎓盐和三嗪类光生酸剂的产酸性能进行了基本评价。
- The preparation and application of internal and external sulfonium cationic polymer since 1960s are summarized comprehensively in this paper. 较全面地综述了国内外自60年代以来叔锍阳离子聚合物的制备与应用情况。
- In this paper the advances of the chemistry including the syntheses and the reactions of hypervalent iodonium ylides in the latest ten years has been reviewed. 本文对近十年来碘叶立德化学包括碘叶立德的合成和反应的最新进展进行综述,并展望前景。
- 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 bulk and solution photopolymerization of vinyl butyl ether were studied using diph-enyl-4-thiophenoxyphenyl sulfonium salt (DPTS) as photoinitiator. 以二苯基-4-苯硫基代苯基硫鎓盐(DPTS)为光引发剂,研究了乙烯基正丁醚的本体和溶液光聚合。
- Some novel sulfonium salts as Photoacid Generator have been successfully designed and synthesized.Their structures were confirmed by 1 HNMR、IR and physical date were acquired. 成功合成了一类新型硫盐光生酸剂,其结构经1HNMR、IR分析确证,同时对其物理性质进行了基本考钅翁察。
- 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。
- aminocarboxy-propyl dimethy sulfonium 氨[基]羧基二甲硫丙氨酸
- methylmethionine sulfonium chloride 维生素U
- carboxymethyl dimethyl sulfonium chloride 氯化羧甲基二甲基锍
- Synthesis of Arsonium Ylide's Precursors 砷叶立德前体化合物的合成