The paper reviews the recent progress in 3 + 2 w_381 cycloaddition using azomethine ylide including preparation of ylide mechanism and selectivity of reaction and application in the total synthesis of natural products .

综述了亚甲胺叶立德的制备、 它参与的3+2 w_420环加成反应的反应机理、反应选择性及在天然产物全合成中的应用等方面的最新进展。

In these reported reactions it is generally considered that an in situ formed phosphorus ylide is the key intermediate .

在这些反应中，人们普遍认为反应经过了一个原位生成的磷 叶 立德 活性中间体。

Study of The Industrial Production Technology For Ultra-High Purity Arsine in China How to choose the base used in the synthesis of arsine ylide is studied .

我国超纯砷烷产业化生产技术研究 本文主要研究了胂 叶 立德合成中碱的选择。

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 new phosphorus ylide could react with aldehyde to give trisubstituted alkenes .

这种新型的 膦 叶 立德在有醛 存在 的 条件 下，可生成三取代的烯烃。

Reaction of Oxosulfonium Ylide with Carbonyl Compounds by phase Transfer Catalyzed Method

相转移催化作用下甲基氧硫 叶 立德与羰基化合物的反应

STUDIES ON THE WITTIG REACTION (ⅹⅷ)── Ion Effects in the Wittig Reaction of Stabilized Ylide

Wittig反应的研究（ⅩⅧ）&稳定 膦 叶 立德的Wittig反应中的离子效应

NMR studies on reaction of stabilized phosphorus ylide with phthalic anhydride

稳定膦 叶 立德和邻苯二甲酸酐反应的NMR研究

Chemistry and Applications of Phosphonium and Arsonium Ylides XXVII Synthesis of Phosphonium Ylide Containing Perfluoroalkyl Group

膦、胂叶立德的化学与应用 XXVII.含全氟烷基膦叶立德的合成

This review summarizes previous mechanistic studies on reactions of dihalocarbenes with carbonyl compounds where dihalocarbonyl Ylide was suggested to be the intermediate .

对近年 来二卤卡宾与羰基化合物的反应机理研究进行了总结。

METHODS 3 benzylidene bromide phosphine salt the important precursor of the phosphine Ylide was synthesis from deoxidize bromization and addition .

方法以3三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3三甲氧基苄溴三苯基膦盐。