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国家自然科学基金(20372033)

作品数:7 被引量:7H指数:1
相关作者:常卫星李靖温梅姣柳凌艳魏晓宁更多>>
相关机构:南开大学更多>>
发文基金:国家自然科学基金教育部科学技术研究重点项目更多>>
相关领域:理学自然科学总论更多>>

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7 条 记 录,以下是 1-10
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In(OTf)_3 catalyzed allylation reaction of imines with tetraallyltin
2009年
In the presence of catalytic amount of In(OTf)3 (10 mol%), a series of aldimines reacted with tetraallyltin in a 2:1 molar ratio to afford the corresponding homoallylic amines in good yields. The good atom efficiency was achieved under mild reaction conditions and a new protocol (allyl)4Sn/In(OTf)3 for simple imines was developed.
Xiao Ning Wei Ling Yan Liu Bing Wang Wei Xing Chang Jing Li
关键词:ALDIMINE
One-pot tandem Barbier-Prins synthesis of tetrahydropyrans in aqueous media
2005年
By investigating the effect of the amount of water, the ratio of aldehyde and allyl- bromide, and the reaction temperature on the transformation, 2,4,6-trisubstituted tetrahydro- pyrans are synthesized by a novel tandem Barbier-Prins-cyclization reaction in the presence of micro-amount of water under mild conditions. The experiment is easy to perform without the need to exclude moisture or air. The reaction is atomic economical and environmentally benign.
WEN Meijiao TANG Long CHANG Weixing LI Jing
SnCI2-mediated Carbonyl Allylation of Aldehydes and Ketones in Ionic Liquid
<正>The Barbier type addition of allyl-metal reagents to carbonyl compounds has been impressively developed in ...
TANG, Long DING, Li CHANG, Wei-Xing LI, Jing (State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071)
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结构新颖的金属双核烯丙基试剂的合成及其芳香醛烯丙基化反应被引量:1
2008年
报道了一个简捷的芳香醛的烯丙基化反应的新体系.通过使用新型的金属双核烯丙基锡试剂(含有Sn—M键,M=Mn或Fe)与醛在二氯甲烷中反应,无需使用任何辅助试剂,直接得到较高产率(42%~98%)的高烯丙基醇.实验结果证明过渡金属基团及M—Sn键具有相当高的活化锡原子上的烯丙基基团的作用.
魏晓宁柳凌艳于磊常卫星李靖
关键词:烯丙基化
Synthesis and Crystal Structure of Novel Sn-O Clusters Generated from ~nBu_2SnO and Esters被引量:1
2010年
A facile and credible strategy was demonstrated to synthesize two new Sn-O clusters 1 and 2 by the reactions of nBu2SnO with esters directly under mild conditions.Cluster 1 crystallizes in the triclinic system,space group P1 with a = 13.054(3),b = 13.137(3),c = 15.077(3) ,α = 80.009(9),β = 77.187(10),γ = 76.075(11)°,Z = 2,V = 2427.3(9) 3,Dc = 1.565 g/cm3,μ(MoKα) = 2.076 mm-1,F(000) = 1152,the final R = 0.0335 and wR = 0.0664 for 9416 observed reflections(I 2σ(I)).Cluster 2 belongs to the monoclinic system,space group P21/c with a = 13.673(3),b = 13.342(3),c = 16.296(4) ,β = 104.385(5)o,Z = 4,V = 2879.7(10) 3,Dc = 1.347 g/cm3,μ(MoKα) = 1.751 mm-1,F(000) = 1176,the final R = 0.0306 and wR = 0.0706 for 6390 observed reflections(I 2σ(I)).The crystal structures of the clusters consist of cen-trosymmetric [RCOOSnnBu2OSnnBu2OH)]2 molecules with an almost planar Sn4O4 framework.Each pair of exo-and endo-cyclic tin atoms was linked by one bridge-OH only.In addition,a novel structure of nBu2SnO different from the previous reports was proposed on the basis of 1H-NMR,TG analysis and X-ray diffraction.
雷斌贾永光柳凌艳常卫星李靖
简单亚胺的高效烯丙基化反应研究
2009年
首次实现了In(OTf)3催化下二丁基二烯丙基锡对活性较低的简单亚胺的高效烯丙基化加成.烯丙基锡试剂和亚胺底物在10mol%的In(OTf)3催化下,无需添加其它辅助试剂,二氯甲烷中室温搅拌10h,就可以得到收率为80%~99%的高烯丙基胺产物.用四烯丙基锡替换该体系中的二丁基二烯丙基锡,50mol%用量即能得到很好的结果.同时还对反应的机理进行了探讨.
魏晓宁柳凌艳王冰常卫星李靖
关键词:烯丙基化亚胺
Indium Triflate Catalyzed Allylation of Ketones with Diallyldibutyltin
<正>Allylation of carbonyl groups by various allylic metals is a highly efficient tool for synthesizing homoall...
LIU, Ling-Yan TANG, Long YU, Lei CHANG, Wei-Xing LI, Jing (State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071)
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四氯化锡诱导的Prins环化法高选择性地合成四氢吡喃衍生物被引量:4
2005年
本文通过预先将醛和四氯化锡进行配位形成高活性的醛中间体 ,同时采用滴加高烯丙醇的方法高收率和高选择性地合成了 2 ,4,6-三取代四氢吡喃 .
温梅姣常卫星李靖
关键词:四氯化锡四氢吡喃
水相中Barbier-Prins环化串联一锅法合成四氢吡喃被引量:1
2004年
通过对水的用量、催化剂、醛与溴丙烯的比例、反应温度等因素对反应的影响的探索,发现了水相中Barbier-Prins环化串连的一锅法合成2,4,6-三取代全顺式四氢吡喃的新反应.反应达到了原子利用率高,对环境友好,可在水相中进行反应的目的.
温梅姣唐龙常卫星李靖
关键词:BARBIER反应四氢吡喃水相环境友好四氢吡喃
New Reagents for Allylation of Aromatic Aldehydes and A Novel Ring-opening/Allylation of Styrene Epoxide
<正>Allylation of carbonyl compounds to afford synthetically useful homoallylic alcohols has been a subject of ...
YU, Lei CHANG, Wei-Xing LI, Jing (State Key of Elemento-Organic Chemistry, Nankai University, Tianjin 300071)
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