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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55条记录   Cyclic Guanidine Organic Catalysts: What Is Magic About Triazabicyclodecene? [作者：KIESEWETTER MATTHEW K; SCHOLTEN MARC D; KIRN NICOLE; WEBER RYAN L; HEDRICK JAMES L; WAYMOUTH ROBERT M,期刊：Journal of Organic Chemistry, 页码：9490-9496 , 文章类型： Article，,卷期：2009年74-24] The bicyclic guanidine 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) is an effective organocatalyst for the formation of amides from esters and primary amines. Mechanistic and kinetic investigations support a nucleophilic me... Unsymmetric Electronic Push-Pull Bipyrroles - Synthesis, Spectroelectrochemical, and Photophysical Investigation [作者：TSHIBAKA TSHITUNDU; ROCHE IVAN ULLIEL; DUFRESNE STEPHANE; LUBELL WILLIAM D; SKENE W G,期刊：Journal of Organic Chemistry, 页码：9497-9500 , 文章类型： Article，,卷期：2009年74-24] The electrochromic and photophysical behaviors of unsymmetric bipyrroles were observed its intense color changes of the oxidized products relative to the neutral form. The color of the oxidized form and the oxidation pot... An Expeditious Entry to Benzylic and Allylic Sulfones through Byproduct-Catalyzed Reaction of Alcohols with Sulfinyl Chlorides [作者：LI HAIHUA; DONG DEJUN; JIN YINHUAN; TIAN SHIKAI,期刊：Journal of Organic Chemistry, 页码：9501-9504 , 文章类型： Article，,卷期：2009年74-24] In the absence of external catalysts and additives, a broad range of benzylic and allylic alcohols react with various sulfinyl chlorides to afford structurally diversified benzylic and allylic sulfones in moderate to exc... Simple and Efficient Access to N-Tosyl beta-Amino Ketones and Their Conversion into 2,4-Disubstituted Azetidines [作者：DAS BISWANATH; BALASUBRAMANYAM PENAGALURI; VEERANJANEYULU BOYAPATI; REDDY GANDOLLA CHINNA,期刊：Journal of Organic Chemistry, 页码：9505-9508 , 文章类型： Article，,卷期：2009年74-24] Treatment of N-tosylaldimines with acetophenone at room temperature in the presence of Bf(3)center dot OEt2 as a catalyst furnished the corresponding N-tosyl beta-amino ketones in high yields (77-86%) within 6-9 h. Subse... Al(OTf)(3)-Mediated Epoxide Ring-Opening Reactions: Toward Piperazine-Derived Physiologically Active Products [作者：WILLIAMS D BRADLEY G; CULLEN ADAM,期刊：Journal of Organic Chemistry, 页码：9509-9512 , 文章类型： Article，,卷期：2009年74-24] Al(OTf)(3) is a good catalyst for the ring opening of epoxides, forming beta-amino alcohols bearing the piperazine motif. Two different strategies were examined, where the glycidyl ether resided on one-half of the molecu... Stereochemical and Conformational Exchanges in N,N '-Di(2-pyridyl)formamidines: An X-ray and H-1 NMR Study [作者：XING LIYAN; WIEGERT CHARLINE; PETITJEAN ANNE,期刊：Journal of Organic Chemistry, 页码：9513-9516 , 文章类型： Article，,卷期：2009年74-24] The solid state structure of N,N'-di(2-pyridyl)formamidine displays a four-hydrogen-bonded dimer. In solution, two isomers are observed, one of which is selected and amplified either by crystallization or by adding proto... Palladium-Catalyzed 2-Arylation of Pyrroles [作者：GRYKO DANIEL T; VAKULIUK OLENA; GRYKO DOROTA; KOSZARNA BEATA,期刊：Journal of Organic Chemistry, 页码：9517-9520 , 文章类型： Article，,卷期：2009年74-24] A methodology that affords N-alkyl-2-arylpyrroles and N-aryl-2-arylpyrroles via direct coupling from aryl iodides has been developed. After examining various reaction parameters: solvent, ratio of reagents, catalyst, bas... Asymmetric Direct Aldol Reactions of Acetoacetals Catalyzed by a Simple Chiral Primary Amine [作者：LUO SANZHONG; QIAO YUPU; ZHANG LONG; LI JIUYUAN; LI XIN; CHENG JINPEI,期刊：Journal of Organic Chemistry, 页码：9521-9523 , 文章类型： Article，,卷期：2009年74-24] An asymmetric direct aldol reaction of acetoacetals is described. Under the catalysis of a simple chiral primary amine, the direct aldol reactions of acetoacetals occur exclusively on the gamma-position to give vinylogou... Oxidative Cleavage of Benzylic and Related Ethers, Using an Oxoammonium Salt [作者：PRADHAN PRIYA P; BOBBITT JAMES M; BAILEY WILLIAM F,期刊：Journal of Organic Chemistry, 页码：9524-9527 , 文章类型： Article，,卷期：2009年74-24] Benzylic ethers and related ArCH2OR substrates are oxidatively cleaved by 4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate (1) in wet CH3CN at room temperature to give the corresponding aromatic ... A Facile and Practical Synthesis of N-Acetyl Enamides [作者：TANG WENJUN; CAPACCI ANDREW; SARVESTANI MAX; WEI XUDONG; YEE NATHAN K; SENANAYAKE CHRIS H,期刊：Journal of Organic Chemistry, 页码：9528-9530 , 文章类型： Article，,卷期：2009年74-24] A facile and practical method for the synthesis of N-acetyl alpha-arylenamides has been developed from corresponding ketoximes as the starting materials with ferrous acetate as the reducing reagent. This methodology offe... Toward Tubulysin: Gram-Scale Synthesis of Tubuvaline-Tubuphenylalanine Fragment [作者：CHANDRASEKHAR SRIVARI; MAHIPAL BODUGAM; KAVITHA MITTA,期刊：Journal of Organic Chemistry, 页码：9531-9534 , 文章类型： Article，,卷期：2009年74-24] A practical and stereoselective synthesis of the tubuvaline-tubuphenylalanine (Tuv-Tup) fragment of tubulysin is achieved involving the opening of aziridine, crucial MacMillan alpha-hydroxylation on both fragments, and a... Reduction of Solid-Supported Olefins and Alkynes [作者：DICKSON DAVID P; TOH CHRISTINE; LUNDA MENAKA; YERMOLINA MARIA V; WARDROP DUNCAN J; LANDRIE CHAD L,期刊：Journal of Organic Chemistry, 页码：9535-9538 , 文章类型： Article，,卷期：2009年74-24] The reduction of carbon-carbon multiple bonds in alkynes and olefins supported on a polystyrene resin has been investigated. Homogeneous catalysis by titanocene reagents is effective for the stereoselective preparation o... Synthesis of a TRPV1 Receptor Antagonist [作者：YU SU; HAIGHT ANTHONY; KOTECKI BRIAN; WANG LEI; LUKIN KIRILL; HILL DAVID R,期刊：Journal of Organic Chemistry, 页码：9539-9542 , 文章类型： Article，,卷期：2009年74-24] A five-step synthesis of a TRPV1 receptor antagonist 1 is described. The key step involves a novel palladium-catalyzed amidation reaction of 4-chloro-1-methylindazole 8 with the benzyl urea 9 to form the unsymmetrically ... Synthesis of Optically Active Amino Acid Derivatives via Dynamic Kinetic Resolution [作者：CHOI YOON KYUNG; KIM YUNWOONG; HAN KIWON; PARK JAIWOOK; KIM MAHNJOO,期刊：Journal of Organic Chemistry, 页码：9543-9545 , 文章类型： Article，,卷期：2009年74-24] The complete conversion of racemic amino acid amides to optically active amino acid derivatives was accomplished via lipase/palladium-catalyzed dynamic kinetic resolution (DKR). In the DKR, a lipase catalyzes the selecti... Asymmetric Total Synthesis of (+)-Crassalactone D [作者：YANG ZHICAI; TANG PHUNG; GAUUAN JOLICIA F; MOLINO BRUCE F,期刊：Journal of Organic Chemistry, 页码：9546-9549 , 文章类型： Article，,卷期：2009年74-24] The asymmetric total synthesis of (+)-crassalactone D (4), a naturally occurring antitumor agent, has been achieved by employing an oxidative spirocyclization of furan 11 as the key step. Two close analogues, 7-epi-crass... PtCl2-Catalyzed Cycloisomerization of 1,6-Enynes for the Synthesis of Substituted Bicyclo[3.1.0]hexanes [作者：YE LIU; CHEN QIAN; ZHANG JIANCUN; MICHELET VERONIQUE,期刊：Journal of Organic Chemistry, 页码：9550-9553 , 文章类型： Article，,卷期：2009年74-24] The mild and efficient PtCl2-catalyzed cycloisomerization of 1,6-enynes containing a heteroatom substituent at the propargylic position is described. The reactions led to the formation of 1-alkenylbicyclo[3.1.0]hexanes i...