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65条记录   Tandem Friedel-Crafts annulation to novel perylene analogues. [作者：Penick, Mark A.;Mahindaratne, Mathew P. D.;Gutierrez, Robert D.;Smith, Terrill D.;Tiekink, Edward R. T.;Negrete, George R.;,期刊：Journal of Organic Chemistry, 页码：6378-6381 , 文章类型： 研究论文，,卷期：2008年73-16] Novel dialkyloxy- and dihydroxyoctahydroperylenes are regioselectively available via a tandem Friedel-Crafts alkylation of tetrahydronaphthalene precursors followed by oxidative aromatization. Heating of 5-alkyloxy-1-tet... Aromatic Nitration in Liquid Ag0.51K0.42Na0.07NO3. [作者：Mascal, Mark;Yin, Lunxiang;Edwards, Ross;Jarosh, Michael;,期刊：Journal of Organic Chemistry, 页码：6148-6151 , 文章类型： 研究论文，,卷期：2008年73-16] Arom. mols. have a strong affinity for silver(I) and dissolve to a limited extent in Ag0.51K0.42Na0.07NO3, a low-melting eutectic mixt. of silver, potassium, and sodium nitrates. Arom. nitration in this inorg. ionic liq... 1,5-Asymmetric Induction in Boron-Mediated Aldol Reactions of b-Alkoxy Methylketones. [作者：Dias, Luiz C.;de Marchi, Anderson A.;Ferreira, Marco A. B.;Aguilar, Andrea M.;,期刊：Journal of Organic Chemistry, 页码：6299-6311 , 文章类型： 研究论文，,卷期：2008年73-16] Good levels of substrate-controlled, 1,5-syn-stereoinduction are obtained in boron-mediated aldol reactions of b-trichloromethyl-b-alkoxy and b-trifluoromethyl-b-alkoxy methylketones X3CCH(OR1)CH2COMe (R1 = PhCH2, Me3CSi... Diastereoselective Synthesis of Useful Building Blocks by Crotylation of b-Branched a-Methylaldehydes with Potassium Crotyltrifluoroborates. [作者：Tanaka, Kyosuke;Fujimori, Yukiko;Saikawa, Yoko;Nakata, Masaya;,期刊：Journal of Organic Chemistry, 页码：6292-6298 , 文章类型： 研究论文，,卷期：2008年73-16] The diastereoselective construction of stereotriads having consecutive Me, hydroxy, and Me substituents was realized by the substrate-controlled crotylation of b-branched a-methylaldehydes with potassium crotyltrifluorob... Stereomutation of Conformational Enantiomers of 9-Isopropyl-9-formylfluorene and Related Acyl Derivatives. [作者：Casarini, Daniele;Lunazzi, Lodovico;Mazzanti, Andrea;,期刊：Journal of Organic Chemistry, 页码：6382-6385 , 文章类型： 研究论文，,卷期：2008年73-16] Low-temp. NMR spectra show that the title compd. exists as a pair of conformational enantiomers, generated by the restricted rotation about the C9-Pri bond, the corresponding interconversion barrier being 6.9 calcns. and... Asymmetric Addition of Dimethylzinc to a-Ketoesters Catalyzed by (-)-MITH. [作者：Wu, Hsyueh-Liang;Wu, Ping-Yu;Shen, Ying-Ying;Uang, Biing-Jiun;,期刊：Journal of Organic Chemistry, 页码：6445-6447 , 文章类型： 研究论文，,卷期：2008年73-16] This investigation describes the catalytic asym. addn. of dimethylzinc to a-ketoesters ArCOCO2R (Ar = Ph, R = Me, Et, iso-Pr, tert-Bu; Ar = and tri-Et borate as an additive to give the corresponding chiral a-hydroxy este... Copper-Mediated N-Cyclopropylation of Azoles, Amides, and Sulfonamides by Cyclopropylboronic Acid. [作者：Benard, Sebastien;Neuville, Luc;Zhu, Jieping;,期刊：Journal of Organic Chemistry, 页码：6441-6444 , 文章类型： 研究论文，,卷期：2008年73-16] The reaction of azoles, amides, and sulfonamides in dichloroethane with readily available cyclopropylboronic acid in the presence of copper acetate and sodium carbonate afforded the N-cyclopropyl derivs. in good to excel... Do the Terms "% ee" and "% de" Make Sense as Expressions of Stereoisomer Composition or Stereoselectivity?. [Erratum to document cited in CA144:390417]. [作者：Gawley, Robert E.;,期刊：Journal of Organic Chemistry, 页码：6470-6470 , 文章类型： 研究论文，,卷期：2008年73-16] Page 2414, Equations 5 and 9 are incorrect; the correct versions of the equations are given with example calcns. Design of a coumarin-based triketone as a fluorescent protecting group for primary amines. [作者：Kuo, Pei-Yu;Yang, Ding-Yah;,期刊：Journal of Organic Chemistry, 页码：6455-6458 , 文章类型： 研究论文，,卷期：2008年73-16] A series of 3-acetyl-4-hydroxycoumarin and its derivs. were prepd. and evaluated for their potential to function as a fluorescent primary amine protection group. When primary amines or amino acids react with the protect... Concise total synthesis of (+)-crocacin C. [作者：Sirasani, Gopal;Paul, Tapas;Andrade, Rodrigo B.;,期刊：Journal of Organic Chemistry, 页码：6386-6388 , 文章类型： 研究论文，,卷期：2008年73-16] The cytotoxic natural product (+)-crocacin C, isolated from mycobacterium Chondromyces crocatus, has been synthesized in 10 linear steps from com. available Evans' chiral propionimide in 5% overall yield (8 steps from Ev... Formal Total Synthesis of (?-Estrone and Zirconocene-Promoted Cyclization of 2-Fluoro-1,7-octadienes and Ru-Catalyzed Ring Closing Metathesis. [作者：Herrmann, Pavel;Budesinsky, Milos;Kotora, Martin;,期刊：Journal of Organic Chemistry, 页码：6202-6206 , 文章类型： 研究论文，,卷期：2008年73-16] A new and diastereoselective method for the synthesis of the estrone skeleton from a substituted styrene based on sequential 3-fold use of Cp2ZrBu2 (oxidative addn.-alkylation and two cyclization-alkylation sequences) an... Enantioselective BINOL-phosphoric acid catalyzed Pictet-Spengler reactions of N-benzyltryptamine. [作者：Sewgobind, Nishant V.;Wanner, Martin J.;Ingemann, Steen;de Gelder, Rene;van Maarseveen, Jan H.;Hiemstra, Henk;,期刊：Journal of Organic Chemistry, 页码：6405-6408 , 文章类型： 研究论文，,卷期：2008年73-16] Optically active tetrahydro-b-carbolines were synthesized via an (R)-BINOL-phosphoric acid-catalyzed asym. Pictet-Spengler reaction of N-benzyltryptamine with a series of arom. and aliph. aldehydes. The tetrahydro-b-car... Total syntheses of (?-crinine, (?-crinamine, and (?-6a-epi-crinamine via the regioselective synthesis and Diels-Alder reaction of 3-aryl-5-bromo-2-pyrone. [作者：Nguyen, Thanh Tam;Chang, Jayhyok;Jung, Eun-Ju;Cho, Cheon-Gyu;,期刊：Journal of Organic Chemistry, 页码：6258-6264 , 文章类型： 研究论文，,卷期：2008年73-16] We have devised a new unified synthetic protocol to (?-crinine (I), (?-crinamine (II), and (?-6a-epi-crinamine from the Diels-Alder cycloadduct of 3-(3,4-methylenedioxyphenyl)-5-bromo-2-pyrone with TBS vinyl ether. The ... Chemoselective N-Acylation via Condensations of N-(Benzoyloxy)amines and a-Ketophosphonic Acids under Aqueous Conditions. [作者：Arora, Jasbir Singh;Kaur, Navneet;Phanstiel, Otto, IV;,期刊：Journal of Organic Chemistry, 页码：6182-6186 , 文章类型： 研究论文，,卷期：2008年73-16] A new amide-forming reaction with N-benzoyloxyamines and a-ketophosphonic acids was studied. A mixed solvent of t-BuOH/H2O (1:1) at 40?provided the desired amide in high yield (71-96%). Both phosphonic acids and their ... Synthesis of optically pure 2-azido-1-arylethanols with isolated enzymes and conversion to triazole-containing b-blocker analogues employing click chemistry. [作者：Ankati, Haribabu;Yang, Yan;Zhu, Dunming;Biehl, Edward R.;Hua, Ling;,期刊：Journal of Organic Chemistry, 页码：6433-6436 , 文章类型： 研究论文，,卷期：2008年73-16] Both antipodes of 2-azido-1-arylethanols were synthesized with excellent optical purity via enzymic redn. of the corresponding a-azidoacetophenone derivs. catalyzed by a recombinant carbonyl reductase from Candida magnol... Synthesis of Fullerooxazoles: Novel Reactions of [60]Fullerene with Nitriles Promoted by Ferric Perchlorate. [作者：Li, Fa-Bao;Liu, Tong-Xin;Wang, Guan-Wu;,期刊：Journal of Organic Chemistry, 页码：6417-6420 , 文章类型： 研究论文，,卷期：2008年73-16] (Heterocyclic Compounds (More Than One Hetero Atom)) Section The ferric perchlorate-mediated reactions of C60 with various nitriles RCN (R = EtO2CCH2, Ph, 4-MeC6H4, 4-O2NC6H4, PhCH2, etc.) in o-dichlorobenzene under nitr...