个性化文献订阅>文章检索

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61条记录   Substituent Effects on the Sensitivity of a Quinoline Photoremovable Protecting Group to One- and Two-Photon Excitation. [作者：Davis, M. Jarrett;Kragor, Christopher H.;Reddie, Khalilah G.;Wilson, Hunter C.;Zhu, Yue;Dore, Timothy M.;,期刊：Journal of Organic Chemistry, 页码：1721-1729 , 文章类型： 研究论文，,卷期：2009年74-4] Photoremovable protecting groups that can reveal biol. important functional groups through one- and two-photon excitation (1PE and 2PE, resp.) have promise in regulating physiol. function in a temporally and spatially re... Synthesis and Rearrangement of Quinone-Embedded Epoxycyclopentenones: A New Avenue to Pyranonaphthoquinones and Indenopyranones. [作者：De, Saroj R.;Ghorai, Sujit K.;Mal, Dipakranjan;,期刊：Journal of Organic Chemistry, 页码：1598-1604 , 文章类型： 研究论文，,卷期：2009年74-4] Epoxyquinones (e.g., I), readily assembled in one step from the quinols (e.g., II) by a simplified version of the Dowd oxidn., are shown to undergo rearrangement to pyranonaphthoquinones (e.g., III) and their ring contra... Organocatalytic Dimerization of Ketoketenes. [作者：Ibrahim, Ahmad A.;Harzmann, Gero D.;Kerrigan, Nessan J.;,期刊：Journal of Organic Chemistry, 页码：1777-1780 , 文章类型： 研究论文，,卷期：2009年74-4] A general method for the catalytic dimerization of ketoketenes is described. Tri-n-butylphosphine was found to be the optimal organocatalyst for the racemic reaction. When lithium iodide was used as an additive, the re... Synthesis of Conformationally Preorganized and Cell-Permeable Guanidine-Based g-Peptide Nucleic Acids (gGPNAs). [作者：Sahu, Bichismita;Chenna, Venugopal;Lathrop, Kira L.;Thomas, Sufi M.;Zon, Gerald;Livak, Kenneth J.;Ly, Danith H.;,期刊：Journal of Organic Chemistry, 页码：1509-1516 , 文章类型： 研究论文，,卷期：2009年74-4] A general method for prepg. optically pure guanidine-based g-peptide nucleic acid (gGPNA) monomers for all four natural nucleobases (A, C, G, T) is described. These second-generation gGPNAs differ from the first-generat... A General, Efficient, and Functional-Group-Tolerant Catalyst System for the Palladium-Catalyzed Thioetherification of Aryl Bromides and Iodides. [作者：Fernandez-Rodriguez, Manuel A.;Hartwig, John F.;,期刊：Journal of Organic Chemistry, 页码：1663-1672 , 文章类型： 研究论文，,卷期：2009年74-4] The cross-coupling reaction of aryl bromides and iodides with aliph. and arom. thiols catalyzed by palladium complexes of the bisphosphine ligand CyPF-tBu (I) is reported. Reactions occur in excellent yields, broad scop... LiOAc-Catalyzed Chemoselective Deprotection of Aryl Silyl Ethers under Mild Conditions. [作者：Wang, Bing;Sun, Hui-Xia;Sun, Zhi-Hua;,期刊：Journal of Organic Chemistry, 页码：1781-1784 , 文章类型： 研究论文，,卷期：2009年74-4] An efficient and chemoselective deprotection protocol for aryl silyl ethers using LiOAc as a bifunctional Lewis acid-Lewis base catalyst was described. Acetates, epoxides, and aliph. silyl ethers were preserved, whereas... A Practical Enantioselective Synthesis of Odanacatib, a Potent Cathepsin K Inhibitor, via Triflate Displacement of an a-Trifluoromethylbenzyl Triflate. [作者：O'Shea, Paul D.;Chen, Cheng-yi;Gauvreau, Danny;Gosselin, Francis;Hughes, Greg;Nadeau, Christian;Volante, Ralph P.;,期刊：Journal of Organic Chemistry, 页码：1605-1610 , 文章类型： 研究论文，,卷期：2009年74-4] An enantioselective synthesis of the Cathepsin K inhibitor odanacatib (I, MK-0822) is described. The key step involves the novel stereospecific SN2 triflate displacement of a chiral a-trifluoromethylbenzyl triflate II w... Palladium-Controlled b-Selective Glycosylation in the Absence of the C(2)-Ester Participatory Group. [作者：Mensah, Enoch A.;Azzarelli, Joseph M.;Nguyen, Hien M.;,期刊：Journal of Organic Chemistry, 页码：1650-1657 , 文章类型： 研究论文，,卷期：2009年74-4] The development of a new glycosylation method for the stereoselective synthesis of b-glycosides in the absence of the traditional C(2)-ester neighboring group effect is described. This process relies on the ability of t... Synthetic Studies toward Sordarin: Building Blocks for the Terpenoid Core and for Analogues Thereof. [作者：Schule, Arnaud;Liang, Huan;Vors, Jean-Pierre;Ciufolini, Marco A.;,期刊：Journal of Organic Chemistry, 页码：1587-1597 , 文章类型： 研究论文，,卷期：2009年74-4] Avenues to bi- and tricyclic building blocks, e.g. I, for the elaboration of sordaricin and its analogs are described. The target mols. were obtained through inter- and intramol. Diels-Alder reactions of a no. of previo... Total Synthesis of (?-Rhazinal Using Novel Palladium-Catalyzed Cyclizations. [作者：Bowie, Alfred L., Jr.;Trauner, Dirk;,期刊：Journal of Organic Chemistry, 页码：1581-1586 , 文章类型： 研究论文，,卷期：2009年74-4] A concise synthesis of (?-rhazinal (I) that hinges on novel oxidative Heck cyclizations and palladium-catalyzed direct couplings is described. An X-ray structure of N-MOM-rhazinal, which provides insight into the confor... Stereochemistry of the C-S Bond Cleavage in cis-2-Methylcyclopentyl Phenyl Sulfoxide Radical Cation. [作者：Baciocchi, Enrico;Lanzalunga, Osvaldo;Lapi, Andrea;Maggini, Laura;,期刊：Journal of Organic Chemistry, 页码：1805-1808 , 文章类型： 研究论文，,卷期：2009年74-4] The TiO2 photocatalyzed oxidn. of cis-2-methylcyclopentyl Ph sulfoxide in the presence of Ag2SO4 in MeCN/H2O leads to the formation of 1-methylcyclopentanol, 1-methylcyclopentylacetamide, and Ph benzenethiosulfonate as t... H-Bond-Assisted Regioselective (cis-1) Intramolecular Nucleophilic Addition of the Hydroxyl Group to [60]Fullerene. [作者：Izquierdo, Marta;Osuna, Silvia;Filippone, Salvatore;Martin-Domenech, Angel;Sola, Miquel;Martin, Nazario;,期刊：Journal of Organic Chemistry, 页码：1480-1487 , 文章类型： 研究论文，,卷期：2009年74-4] The one-step reaction of 2,6-dihydroxyphenyl Me ketone and sarcosine with [60]fullerene in refluxing chlorobenzene affords, in a totally regioselective process, the cis-1 bicyclic-fused organofullerene through a new intr... Highly regioselective simultaneous introduction of phosphino and seleno groups into unsaturated bonds by the novel combination of (Ph2P)2 and (PhSe)2 upon photoirradiation. [作者：Kawaguchi, Shin-ichi;Shirai, Takamune;Ohe, Takashi;Nomoto, Akihiro;Sonoda, Motohiro;Ogawa, Akiya;,期刊：Journal of Organic Chemistry, 页码：1751-1754 , 文章类型： 研究论文，,卷期：2009年74-4] Prepn. of b-selenoether-functionalized phosphines was achieved by chemoselective radical addn. of (Ph2P)2/(PhSe)2 mixt. to alkenes, alkynes and allenes under UV-irradn. Addn. of (Ph2P)2/(PhSe)2 to RCYCH followed by oxid... Diastereoselective Synthesis of Bicyclic g-Lactams via Ring Expansion of Monocyclic b-Lactams. [作者：Dekeukeleire, Stijn;D'hooghe, Matthias;De Kimpe, Norbert;,期刊：Journal of Organic Chemistry, 页码：1644-1649 , 文章类型： 研究论文，,卷期：2009年74-4] Cis-4-(1-Chloro-1-methylethyl)-1-(w-hydroxyalkyl)azetidin-2-ones (I, R = Ph, Bn, Me; n = 1, 2) were diastereoselectively transformed into novel trans-1-aza-4-oxabicyclo[3.3.0]octan-8-ones II (n = 1) and trans-1-aza-5-oxa... Highly Efficient Formation of Nitriles and Alkoxy Radicals from N-Alkoxybenziminoyl Chlorides in Solution. [作者：Peter de Lijser, H. J.;Burke, Cassandra R.;Rosenberg, Jonathan;Hunter, Jordan;,期刊：Journal of Organic Chemistry, 页码：1679-1684 , 文章类型： 研究论文，,卷期：2009年74-4] A series of N-alkoxybenziminoyl chlorides were synthesized and reacted with tributyltin hydride in the presence of AIBN to generate the corresponding N-alkoxybenziminoyl radicals. This methodol. successfully generates t... Chiral Primary-Tertiary Diamine Catalysts Derived From Natural Amino Acids for syn-Aldol Reactions of Hydroxy Ketones. [作者：Li, Jiuyuan;Luo, Sanzhong;Cheng, Jin-Pei;,期刊：Journal of Organic Chemistry, 页码：1747-1750 , 文章类型： 研究论文，,卷期：2009年74-4] A series of primary-tertiary diamine catalysts, e.g. I, were designed and synthesized from primary natural amino acids. Application of these new chiral catalysts in direct aldol reactions of a-hydroxyketones showed very...