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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共60条记录   Copper/Diethyl Azodicarboxylate Mediated Regioselective Alkynylation of Unactivated Aliphatic Tertiary Methylamine with Terminal Alkyne. [作者：Xu, Xiaoliang;Li, Xiaonian;,期刊：Organic Letters, 页码：1027-1029 , 文章类型： 研究论文，,卷期：2009年11-4] Mediated by copper/diethyl azodicarboxylate, regioselective alkynylation of unactivated aliph. tertiary methylamine with terminal alkyne was successfully established. It is not necessary for the tertiary methylamines to... A Rhodamine-Hydroxamic Acid-Based Fluorescent Probe for Hypochlorous Acid and Its Applications to Biological Imagings. [作者：Yang, Young-Keun;Cho, Hyungseoph Jason;Lee, Jihyun;Shin, Injae;Tae, Jinsung;,期刊：Organic Letters, 页码：859-861 , 文章类型： 研究论文，,卷期：2009年11-4] A new rhodamine-hydroxamic acid-based fluorescent chemosensor for the rapid detection of HOCl in aq. media was developed. The system, which utilizes an irreversible HOCl-promoted oxidn. reaction, responds instantaneousl... A Zn2+ Fluorescent Sensor Derived from 2-(Pyridin-2-yl)benzoimidazole with Ratiometric Sensing Potential. [作者：Liu, Zhipeng;Zhang, Changli;Li, Yunling;Wu, Zhengyi;Qian, Fang;Yang, Xiaoliang;He, Weijiang;Gao, Xiang;Guo, Zijian;,期刊：Organic Letters, 页码：795-798 , 文章类型： 研究论文，,卷期：2009年11-4] incorporation with a Zn2+ ionophore, bis(pyridin-2-ylmethyl)amine. The sensor (PBITA) demonstrates a Zn2+-specific emission shift and enhancement with a 1:1 binding ratio. Due to the Zn2+-induced coplanation of 2-PBI v... Asymmetric lewis acid mediated [1,2]-rearrangement of proline-derived ammonium ylides. [作者：Tuzina, Pavel;Somfai, Peter;,期刊：Organic Letters, 页码：919-921 , 文章类型： 研究论文，,卷期：2009年11-4] The first example of asym. Lewis acid mediated [1,2]-rearrangement of N-benzylic proline amides to form quaternary proline derivs. is reported. The presented reaction is shown to proceed with remarkable high C甆瓹 chirali... Synthesis of Diazacalix[8]arene and Triazacalix[12]arene Methyl Ethers via Intramolecular Aryl Amination. [作者：Lawson, Kenneth V.;Barton, Ashlee C.;Spence, John D.;,期刊：Organic Letters, 页码：895-898 , 文章类型： 研究论文，,卷期：2009年11-4] Azacalixarenes I (x = 2, 3) derived from p-tert-butylphenol are generated by an intramol. aryl amination strategy as the ring-closing step. The reaction produces the first examples of larger p-tert-butylcalixarenes with... Dibenzoxazepinium Ylides: Facile Access and 1,3-Dipolar Cycloaddition Reactions. [作者：Khlebnikov, Alexander F.;Novikov, Mikhail S.;Petrovskii, Petr P.;Magull, Joerg;Ringe, Arne;,期刊：Organic Letters, 页码：979-982 , 文章类型： 研究论文，,卷期：2009年11-4] An effective approach to azirino-fused heterocycles is disclosed. The approach, involving formation of heterocycle/C-(arylchloromethyl)-substituted C=N double bonds via domino isomerization of a gem-dichloroaziridine: i... Synthesis of Enantiopure Bicyclic a,a-Disubstituted Spirolactams via Asymmetric Birch Reductive Alkylation. [作者：Gueret, Stephanie M.;O'Connor, Patrick D.;Brimble, Margaret A.;,期刊：Organic Letters, 页码：963-966 , 文章类型： 研究论文，,卷期：2009年11-4] The synthesis of enantiopure bicyclic a,a-disubstituted spirolactams is described using a diastereoselective Birch reductive alkylation as the key step. Hydrogenation of the resultant alkylated cyclohexadienes followed ... Catalytic Enantioselective Arylation of N-Tosylarylimines with Arylboronic Acids Using C2-Symmetric Cationic N-Heterocyclic Carbene Pd2+ Diaquo Complexes. [作者：Ma, Guang-Ning;Zhang, Tao;Shi, Min;,期刊：Organic Letters, 页码：875-878 , 文章类型： 研究论文，,卷期：2009年11-4] Pd2+ diaquo complex I as the catalyst in combination with 1.0 equiv of K3PO4?H2O in THF at 4癈 in the presence of powd. 4 ?MS to afford the corresponding adducts, e.g. (S)-4-ClC6H4CH(NHTs)Ph, in excellent yields (up to 99... Enantioselective Reactions of Donor/Acceptor Carbenoids Derived from a-Aryl-a-Diazoketones. [作者：Denton, Justin R.;Davies, Huw M. L.;,期刊：Organic Letters, 页码：787-790 , 文章类型： 研究论文，,卷期：2009年11-4] The reaction of a variety of a-aryl-a-diazo ketones with activated olefins, catalyzed by the adamantyl glycine-derived dirhodium complex Rh2(S-PTAD)4, generates cyclopropyl ketones with high diastereoselectivity (up to >... Stereo- and Enantioselective Synthesis of Acetylenic 2-Amino-1,3-diol Stereotriads. [作者：Voituriez, Arnaud;Perez-Luna, Alejandro;Ferreira, Franck;Botuha, Candice;Chemla, Fabrice;,期刊：Organic Letters, 页码：931-934 , 文章类型： 研究论文，,卷期：2009年11-4] The high-yielding and highly efficient stereoselective synthesis of enantiopure anti,anti and syn,anti acetylenic 2-amino-1,3-diol stereotriads, e.g. I and II, from a-alkoxy-tert-butanesulfinylimines bearing a stereocent... Copper/Ascorbic Acid Dyad as a Catalytic System for Selective Aerobic Oxidation of Amines. [作者：Srogl, Jiri;Voltrova, Svatava;,期刊：Organic Letters, 页码：843-845 , 文章类型： 研究论文，,卷期：2009年11-4] A new, environmentally benign system based on an ascorbic acid (vitamin C)/copper dyad is presented, which facilitates the oxidn. of amines to carbonyl compds. The oxidn. utilizes aerobic oxygen as the ultimate electron... First triazole-linked porphyrin-fullerene dyads. [作者：Fazio, Michael A.;Lee, Olivia P.;Schuster, David I.;,期刊：Organic Letters, 页码：1041-1041 , 文章类型： 研究论文，,卷期：2009年11-4] The authors neglected to cite a recent publication in which 'click' chem. was use to prep. a series of triazolelinked fullerene hexakis-adducts, including compds. with porphyrin termini: Iehl, J., de Freitas, R.P., Delav...