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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96条记录   One-Pot Formation of Piperidine- and Pyrrolidine-Substituted Pyridinium Salts via Addition of 5-Alkylaminopenta-2,4-dienals to N-Acyliminium Ions: Application to the Synthesis of (+/-)-Nicotine and Analogs [作者：PEIXOTO SABRINA; NGUYEN TUAN MINH; CRICH DAVID; DELPECH BERNARD; MARAZANO CHRISTIAN,期刊：Organic Letters, 页码：4760-4763 , 文章类型： Article，,卷期：2010年12-21] Addition of 5-alkylaminopenta-2,4-dienals onto N-acyliminium ions, generated in situ from alpha-hydroxycarbamates derived from pyrrolidine or piperidine, in the presence of zinc triflate, followed by dehydrative cyclizat... Proton Affinities of Phosphines versus N-Heterocyclic Carbenes [作者：LIU MIN; YANG ILL; BUCKLEY BRIAN; LEE JEEHIUN K,期刊：Organic Letters, 页码：4764-4767 , 文章类型： Article，,卷期：2010年12-21] The gas-phase proton affinities of unusually basic phosphines and N-heterocyclic carbenes are compared and contrasted both computationally and experimentally. Experimental and Theoretical Investigation into the Gold-Catalyzed Reactivity of Cyclopropenylmethyl Acetates [作者：SERAYA ELAINE; SLACK ERIC; ARIAFARD ALIREZA; YATES BRIAN F; HYLAND CHRISTOPHER J T,期刊：Organic Letters, 页码：4768-4771 , 文章类型： Article，,卷期：2010年12-21] Cyclopropenylmethyl acetates have been shown to undergo rapid and stereoselective gold catalyzed rearrangement to Z-acetoxydienes in high yield. OFT calculations have shown that while several reaction pathways can be env... B(C6F5)(3)-Promoted Tandem Silylation and Intramolecular Hydrosilylation: Diastereoselective Synthesis of Oxasilinanes and Oxasilepanes [作者：SHCHEPIN ROMAN; XU CHUNPING; DUSSAULT PATRICK,期刊：Organic Letters, 页码：4772-4775 , 文章类型： Article，,卷期：2010年12-21] B(C6F5)(3) promotes regio- and stereoselective cyclizations of unsaturated alkoxysilanes to generate oxasilinanes and oxasilepanes. The same products are available directly from alkenols via tandem silylation and hydrosi... New Synthesis of 3-Trifluoromethylpyrroles by Condensation of Mesoionic 4-Trifluoroacetyl-1,3-oxazolium-5-olates with Phosphorus Ylides [作者：SAIJO RYOSUKE; HAGIMOTO YURI; KAWASE MASAMI,期刊：Organic Letters, 页码：4776-4779 , 文章类型： Article，,卷期：2010年12-21] Mesoionic 4-trifluoroacetyl-1,3-oxazolium-5-olates (1), obtained from the reaction of N-acyl-N-alkylglycines with trifluoroacetic anhydride, react with phosphorus ylides to give beta-trifluoromethylpyrroles (2) in good y... Serum Albumins as Differential Receptors for the Discrimination of Fatty Acids and Oils [作者：KUBARYCH COLIN J; ADAMS MICHELLE M; ANSLYN ERIC V,期刊：Organic Letters, 页码：4780-4783 , 文章类型： Article，,卷期：2010年12-21] Using fluorescent indicators and several serum albumins, a sensing system for fatty acids was developed. Fatty acids were able to be differentiated based on their carbon chain length and degree of unsaturation. A sensing... Arylene Ethynylene Macrocycles with Intramolecular pi-pi Stacking [作者：CHEN SHUSEN; YAN QIFAN; LI TIAN; ZHAO DAHUI,期刊：Organic Letters, 页码：4784-4787 , 文章类型： Article，,卷期：2010年12-21] Arylene ethynylene macrocycles containing 9,10-anthrylene or 1,4-naphthylene units were synthesized. In chloroform, significant resonance upfield shifting was observed with beta-protons of anthrylene and naphthylene in N... Gold(I)-Catalyzed Asymmetric Synthesis of Planar Chiral Arene Chromium Complexes [作者：MURAI MASATO; UENISHI JUNICHI; UEMURA MOTOKAZU,期刊：Organic Letters, 页码：4788-4791 , 文章类型： Article，,卷期：2010年12-21] Gold(I)-catalyzed asymmetric cyclization of 1,3-dihydroxymethyl-2-alkynylbenzene chromium complexes gave planar chiral isochromene chromium complexes with high enantioselectivity. Enantiomeric excess of the cyclization p... Selective Hg(II) Sensing with Improved Stokes Shift by Coupling the Internal Charge Transfer Process to Excitation Energy Transfer [作者：ATILGAN SERDAR; OZDEMIR TUGBA; AKKAYA ENGIN U,期刊：Organic Letters, 页码：4792-4795 , 文章类型： Article，,卷期：2010年12-21] Versatile chemistry of the Bodipy chromophore allows modular assembly of an excitation energy donor, acceptor, and a cation selective ligand in just a couple of steps. The new approach should be applicable in other desig... Dual Fluorescent N-Aryl-2,3-naphthalimides: Applications in Ratiometric DNA Detection and White Organic Light-Emitting Devices [作者：NANDHIKONDA PREMCHENDAR; HEAGY MICHAEL D,期刊：Organic Letters, 页码：4796-4799 , 文章类型： Article，,卷期：2010年12-21] A ten element matrix of 5- and 6-substituted-(2,3)-naphthalimides was prepared for the appropriate placement of substituents necessary to promote dual fluorescence (DF). As prescribed by our balanced seesaw photophysical... Pyridylalanine (Pal)-Peptide Catalyzed Enantioselective Allenoate Additions to N-Acyl Imines Proceed via an Atypical "aza-Morita-Baylis-Hillman" Mechanism [作者：SAUNDERS LINDSEY B; COWEN BRYAN J; MILLER SCOTT J,期刊：Organic Letters, 页码：4800-4803 , 文章类型： Article，,卷期：2010年12-21] Mechanistic experiments, including kinetics and hydrogen/deuterium kinetic isotope effects, reveal an "atypical" rate-determining step in a pyridylalanine-peptide catalyzed enantioselective coupling of allenoates and N-a... Boronic Acid Porphyrin Receptor for Ginsenoside Sensing [作者：HARGROVE AMANDA E; REYES RYAN N; RIDDINGTON IAN; ANSLYN ERIC V; SESSLER JONATHAN L,期刊：Organic Letters, 页码：4804-4807 , 文章类型： Article，,卷期：2010年12-21] Ginsenoside detection was pursued through the design of a porphyrin receptor containing two boronic acid units. This receptor was found to undergo different degrees of fluorescence quenching with five ginsenoside guests ... Photoisomerization of Ionic Liquid Ammonium Cinnamates: One-Pot Synthesis-Isolation of Z-Cinnamic Acids [作者：SALUM MARIA L; ROBLES CECILIA J; ERRABALSELLS ROSA,期刊：Organic Letters, 页码：4808-4811 , 文章类型： Article，,卷期：2010年12-21] Photoisomerization presents the only direct method for contra-thermodynamic E-Z isomerization of olefins. Synthetic applications of this method have been limited by its reversible nature, which leads to a photostationary... Sequential Organocatalytic Stetter and Michael-Aldol Condensation Reaction: Asymmetric Synthesis of Fully Substituted Cyclopentenes via a [1+2+2] Annulation Strategy [作者：HONG BORCHERNG; DANGE NITIN S; HSU CHESHENG; LIAO JUHSIOU,期刊：Organic Letters, 页码：4812-4815 , 文章类型： Article，,卷期：2010年12-21] A stereoselective synthesis of fully substituted cyclopentenes has been achieved by a sequential organocatalyzed Stetter and Michael-aldol condensation of aromatic aldehydes, nitroalkenes, and alpha,beta-unsaturated alde... Thiophene-Containing Pechmann Dye Derivatives [作者：NORSTEN TYLER B; KANTCHEV ERIC ASSEN B; SULLIVAN MICHAEL B,期刊：Organic Letters, 页码：4816-4819 , 文章类型： Article，,卷期：2010年12-21] Thiophene-containing Pechmann dyes (unsaturated exo-5,5-dilactones) were easily prepared by Cu-catalyzed dehydration of the corresponding beta-aroylacrylic acids. Introduction of long alkyl chains greatly enhances solubi... Selective Sensor for Silver Ions Built From Polyfluorophores on a DNA Backbone [作者：TAN SAMUEL S; TEO YIN NAH; KOOL ERIC T,期刊：Organic Letters, 页码：4820-4823 , 文章类型： Article，,卷期：2010年12-21] To explore a new modular metal ion sensor design strategy, fluorophores and ligands were incorporated into short DNA-like oligomers. Compound 1 was found to function as a selective sensor for Ag+ in aqueous buffer, where...