doi:US3617271 APoot, Albert LucienVan Den, Heuvel AugustVanheertum, Johannes JosephusVerhille, Karel EugeenUSUS3617271 * 1969年6月10日 1971年11月2日 Agfa Gevaert Nv Sensitizers having one or more electron-withdrawing groups for organic photoconductors...
substituted or disjoint enzymatically cleavable group, which when cleaved, leaves the phenoxyanion or naphthyloxyanion of the dioxetane, and, at the four or preferably the five position, an electron donating or electron withdrawing group. ... I Bronstein,B Edwards,A Sparks - US 被引量: 30发表...
electron-withdrawingsterically妨碍或功能 翻译结果5复制译文编辑译文朗读译文返回顶部 Sterically被妨害的或电子撤出的功能 相关内容 aI am off the hook now I am off the hook now[translate] a除非它走途无路 ). Only if it walks the way not to have the road).[translate] ...
halogenmethyl, cyano, dialkylamino, sulfonylalkyl or alkenoyloxy groups. Substituents may be groups with electron withdrawing or electron donating properties. Examples of monodentate phosphine ligands include tri-p-tolylphosphine, tri-p-methoxyphenylphosphine, diphenylpentylphosphine and dimethylphenylphosphine...
Hindered or Electron-Withdrawing Functionalities选择语言:从 到 翻译结果1翻译结果2 翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 翻译结果2复制译文编辑译文朗读译文返回顶部 阻碍或收回电子的功能 翻译结果3复制译文编辑译文朗读译文返回顶部 翻译结果4复制译文编辑译文朗读译文返回顶部 正在...
摘要: Keywords: barium valence electron pair; Be O bond; p-orbital electron pairs; electron-withdrawing ligand; BeO captures关键词: barium valence electron pair Be O bond p-orbital electron pairs electron-withdrawing ligand BeO captures 出版时间: MAY 2007 ...
For the aromatic sulfide with an electron-withdrawing group and the aliphatic sulfide with long chain, excess H2O2 was needed to realize the selective catalytic oxidation of sulfides to sulfoxides. Table 2. Selective catalytic oxidation of sulfides to sulfoxides over Nb2O5/ACa. EntrySubstrate...
Substitution with an ethyl group at position 5 (15u) was active but had a reduced inhibitor effect than that of 15t. However, the addition of an electron-withdrawing bromide at position 4 (15v) or 5 (15w) of thiophene decreased or nullified the antiviral effect. Table 1 shows that ...
aAldehyde group is an electron withdrawing group to make the active hydrogen. Diethylmalonate is the normal active methylene compounds. In this reaction, enough concentration of the Carbanion is made to take nucleophlic addition. In addition, using of weak alkali to avoid the aldehyde ketone conde...
aAldehyde group is an electron withdrawing group to make the active hydrogen. Diethylmalonate is the normal active methylene compounds. In this reaction, enough concentration of the Carbanion is made to take nucleophlic addition. In addition, using of weak alkali to avoid the aldehyde ketone conde...