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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   Asymmetric Vinylogous Aldol Reaction via H-Bond-Directing Dienamine Catalysis [作者：BASTIDA DAVID; LIU YANKAI; TIAN XU; ESCUDEROADAN EDUARDO; MELCHIORRE PAOLO,期刊：Organic Letters, 页码：220-223 , 文章类型： Article，,卷期：2013年15-1] The enantioselective direct vinylogous aldol reaction of 3-methyl 2-cyclohexen-1-one with alpha-keto esters has been developed. The key to success was the design of a bifunctional primary amine-thiourea catalyst that can... A Unique Cascade Reaction between 3-Arylprop-2-inylcarboxylates and Benzaldehydes Leading to the Formation of Morita-Baylis-Hillman Adducts [作者：KARPAVICIENE IEVA; CIKOTIENE INGA,期刊：Organic Letters, 页码：224-227 , 文章类型： Article，,卷期：2013年15-1] During an alkyne-carbonyl metathesis reaction between electron-rich 3-arylprop-2-inylcarboxylates and electron-poor benzaldehydes, a smooth migration of carboxylate groups takes place. This unique cascade reaction allows... Stereoselective Synthesis of 1,3-anti Diols by an Ipc-Mediated Domino Aldol-Coupling/Reduction Sequence [作者：DIECKMANN MICHAEL; MENCHE DIRK,期刊：Organic Letters, 页码：228-231 , 文章类型： Article，,卷期：2013年15-1] A novel domino process for 1,3-anti diol synthesis by the union of a methyl ketone with an aldehyde is described. The operationally simple procedure is based on an Ipc-boron-aldol coupling and subsequent Ipc-mediated red... 2-Pyridone Synthesis Using 2-(Phenylsulfinyl)acetamide [作者：FUJII MASAYA; NISHIMURA TAKUYA; KOSHIBA TAKAHIRO; YOKOSHIMA SATOSHI; FUKUYAMA TOHRU,期刊：Organic Letters, 页码：232-234 , 文章类型： Article，,卷期：2013年15-1] 2-Pyridones were prepared by means of an efficient protocol including the 1,4-addition of 2-(phenylsulfinyl)acetamide to alpha,beta-unsaturated ketones followed by cyclization and sulfoxide elimination. Gold-Catalyzed Sequential Alkyne Activation for the Synthesis of 4,6-Disubstituted Phosphorus 2-Pyrones [作者：MO JUNTAE; KANG DONGJIN; EOM DAHAN; KIM SUNG HONG; LEE PHIL HO,期刊：Organic Letters, 页码：26-29 , 文章类型： Article，,卷期：2013年15-1] Tandem gold-catalyzed addition of alkynyl phosphonic acid monoethyl esters to terminal alkynes and cyclization were developed for the synthesis of 4,6-disubstituted phosphorus 2-pyrones in one reaction vessel based on th... Intercepting the Breslow Intermediate via Claisen Rearrangement: Synthesis of Complex Tertiary Alcohols without Organometallic Reagents [作者：ALWARSH SEFAT; AYINUOLA KOLAWOLE; DORMI SILVANA S; MCINTOSH MATTHIAS C,期刊：Organic Letters, 页码：3-5 , 文章类型： Article，,卷期：2013年15-1] A novel Claisen rearrangement in which the Breslow intermediate is engaged as a hydroxy-substituted N,S-ketene acetal to provide complex 3 degrees alcohols without the use of organometallic reagents is reported. The reac... Visible Light Mediated Activation and O-Glycosylation of Thioglycosides [作者：WEVER WALTER J; CINELLI MARIS A; BOWERS ALBERT A,期刊：Organic Letters, 页码：30-33 , 文章类型： Article，,卷期：2013年15-1] Visible light catalysis allows the efficient construction of single electron transfer (SET) redox cycles that result in minimal formation of byproducts and proceed under exogenous control of a removable light source. The... Amines Bearing Tertiary Substituents by Tandem Enantioselective Carbolithiation-Rearrangement of Vinylureas [作者：TAIT MICHAEL; DONNARD MORGAN; MINASSI ALBERTO; LEFRANC JULIEN; BECHI BEATRICE; CARBONE GIORGIO; OBRIEN PETER; CLAYDEN JONATHAN,期刊：Organic Letters, 页码：34-37 , 文章类型： Article，,卷期：2013年15-1] In the presence of (-)-sparteine or a (+)-sparteine surrogate, organolithiums add to N-alkenyl-N'-arylureas to give benzylic organolithiums in an enantioselective manner. Under the influence of DMPU, these organolithiums... Cyclopropenone Catalyzed Substitution of Alcohols with Mesylate Ion [作者：NACSA ERIC D; LAMBERT TRISTAN H,期刊：Organic Letters, 页码：38-41 , 文章类型： Article，,卷期：2013年15-1] The cyclopropenone catalyzed nucleophilic substitution of alcohols by methanesulfonate ion with inversion of configuration is described. This work provides an alternative to the Mitsunobu reaction that avoids the use of ... A Highly Diastereo- and Enantioselective Hg(II)-Catalyzed Cyclopropanation of Diazooxindoles and Alkenes [作者：CAO ZHONGYAN; ZHOU FENG; YU YIHUA; ZHOU JIAN,期刊：Organic Letters, 页码：42-45 , 文章类型： Article，,卷期：2013年15-1] It is reported for the first time that Hg(II) can catalyze the cyclopropanation of diazo reagents and alkenes, which contributes to the unprecedented highly diastereo- and enantioselective synthesis of spirocyclopropylox... Asymmetric Chiral Ligand-Directed Alkene Dioxygenation [作者：NEUFELDT SHARON R; SANFORD MELANIE S,期刊：Organic Letters, 页码：46-49 , 文章类型： Article，,卷期：2013年15-1] A Pd-catalyzed asymmetric alkene 1,2-dioxygenation reaction is described. The diastereoselectivity of the reaction is controlled by tethering a chiral oxime ether directing group to the alkene substrate. The best selecti... Direct alpha-Functionalization of Simple Aldehydes via Oxidative N-Heterocyclic Carbene Catalysis [作者：MO JUNMING; YANG RUOJIE; CHEN XINGKUAN; TIWARI BHOOPENDRA; CHI YONGGUI ROBIN,期刊：Organic Letters, 页码：50-53 , 文章类型： Article，,卷期：2013年15-1] A direct alpha-functionalization of simple aldehydes under N-Heterocyclic Carbene (NHC) catalysis and direct generation of ester enolate equivalents from nonfunctionalized aldehydes are disclosed. The catalysis involves ...