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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80条记录   Primary Amine, Thiourea-Based Dual Catalysis Motif for Synthesis of Stereogenic, All-Carbon Quaternary Center-Containing Cycloalkanones [作者：KANG JUN YONG; CARTER RICH G,期刊：Organic Letters, 页码：3178-3181 , 文章类型： Article，,卷期：2012年14-12] The enantioselective synthesis of alpha,alpha-disubstituted cycloalkanones has been developed using a primary amine, thiourea-based dual catalysis pathway. A range of electrophiles and ring sizes are tolerated under the ... Rhenium-Catalyzed Regioselective Synthesis of Multisubstituted Pyridines from beta-Enamino Ketones and Alkynes via C-C Bond Cleavage [作者：YAMAMOTO SHUNICHI; OKAMOTO KANA; MURAKOSO MAKIKO; KUNINOBU YOICHIRO; TAKAI KAZUHIKO,期刊：Organic Letters, 页码：3182-3185 , 文章类型： Article，,卷期：2012年14-12] A new method is described for the regioselective synthesis of multisubstituted pyridine derivatives. Treatment of N-acetyl beta-enamino ketones with alkynes in the presence of the rhenium catalyst, Re-2(CO)(10), gives mu... Total Synthesis of (-)-Polycavernoside A: Suzuki-Miyaura Coupling Approach [作者：KASAI YUSUKE; ITO TAKANORI; SASAKI MAKOTO,期刊：Organic Letters, 页码：3186-3189 , 文章类型： Article，,卷期：2012年14-12] A total synthesis of (-)-polycavernoside A, a marine lethal toxin isolated from the edible alga Gracilaria edulis, has been achieved via a convergent approach. The synthesis is highlighted by catalytic asymmetric synthes... Copper-Catalyzed Complete Regio- and Stereoselective Cyclization of 1-Aryl-3-sulfanyl-4-oxahepta-1,6-diynes Triggered by Alkynylation [作者：YOSHIMATSU MITSUHIRO; SASAKI HITOMI; SUGIMOTO YUKO; NAGASE YUYA; TANABE GENZOH; MURAOKA OSAMU,期刊：Organic Letters, 页码：3190-3193 , 文章类型： Article，,卷期：2012年14-12] Copper(I)-catalyzed alkynylation-cyclization of 4-oxahepta-1,6-diynes 1 with a wide variety of terminal alkynes proceeded to give (3E,4Z)-3-(phenylsulfanylmethylene)-4-(2-propynylidene)tetrahydrofuran-2-yl]benzenes 2aa-h... N,N-Diarylammonium Pyrosulfate as a Highly Effective Reverse Micelle-Type Catalyst for Hydrolysis of Esters [作者：KOSHIKARI YOSHIKI; SAKAKURA AKIRA; ISHIHARA KAZUAKI,期刊：Organic Letters, 页码：3194-3197 , 文章类型： Article，,卷期：2012年14-12] Reverse micelle-type N,N-diarylammonium pyrosulfate (3-5 mol %) efficiently catalyzes the hydrolysis of esters (up to 100 mmol scale) under organic solvent-free conditions. The present method is successfully applied to t... Serratustones A and B Representing a New Dimerization Pattern of Two Types of Sesquiterpenoids from Chloranthus serratus [作者：YUAN TAO; ZHU RONGXIU; YANG SHENGPING; ZHANG HUA; ZHANG CHUANRUI; YUE JIANMIN,期刊：Organic Letters, 页码：3198-3201 , 文章类型： Article，,卷期：2012年14-12] Serratustones A (1) and B (2), featuring a new carbon skeleton and representing a novel dimerization pattern of two different types of sesquiterpenoids, were isolated from Chloranthus serratus. Their structures with abso... Boric Acid: A Highly Efficient Catalyst for Transamidation of Carboxamides with Amines [作者：THANH BINH NGUYEN; SORRES JONATHAN; MINH QUAN TRAN; ERMOLENKO LUDMILA; ALMOURABIT ALI,期刊：Organic Letters, 页码：3202-3205 , 文章类型： Article，,卷期：2012年14-12] A novel method of transamidation of carboxamides with amines using catalytic amounts of readily available boric acid under solvent-free conditions has been developed. The scope of the methodology has been demonstrated wi... Direct Synthesis of Functional Azaxanthones by Using a Domino Three-Component Reaction [作者：YAN JIANWEI; CHENG MING; HU FENG; HU YOUHONG,期刊：Organic Letters, 页码：3206-3209 , 文章类型： Article，,卷期：2012年14-12] NH aldimines, generated in situ from the corresponding aldehydes by reaction with ammonium acetate, serve as nitrogen nucleophiles in reactions with 3-(1-alkynyl)chromones and 3-cyanochromones that generate functionalize... Ternifolide A, a New Diterpenoid Possessing a Rare Macrolide Motif from Isodon ternifolius [作者：ZOU JUAN; DU XUE; PANG GUO; SHI YIMING; WANG WEIGUANG; ZHAN RUI; KONG LINGMEI; LI XIAONIAN; LI YAN; PU JIANXIN; SUN HANDONG,期刊：Organic Letters, 页码：3210-3213 , 文章类型： Article，,卷期：2012年14-12] Ternifolide A (1), a new diterpenoid featuring a unique 10-membered lactone ring formed between C-6 and C-15, along with ternifolide B (2), a nor-diterpenoid, and ternifolide C (3) were isolated from the leaves of Isodon... An Intramolecular [2+2] Cycloaddition of Ketenimines via Palladium-Catalyzed Rearrangements of N-Allyl-Ynamides [作者：DEKORVER KYLE A; HSUNG RICHARD P; SONG WANGZE; WANG XIAONA; WALTON MARY C,期刊：Organic Letters, 页码：3214-3217 , 文章类型： Article，,卷期：2012年14-12] A cascade of Pd-catalyzed N-to-C allyl transfer intramolecular ketenimine-[2 + 2] cycloadditions of N-allyl ynamides is described. This tandem sequence is highly stereoselective and the [2 + 2] cycloaddition could be ren... Unexpected Copper-Catalyzed Aerobic Oxidative Cleavage of C(sp(3))-C(sp(3)) Bond of Glycol Ethers [作者：LIU ZHONGQUAN; ZHAO LIXING; SHANG XIAOJIE; CUI ZILI,期刊：Organic Letters, 页码：3218-3221 , 文章类型： Article，,卷期：2012年14-12] An unexpected Cu-catalyzed oxidative cleavage of the C(sp(3))-C(sp(3)) bond in glycol ethers by using air or molecular oxygen as the terminal stoichiometric oxidant is demonstrated. As a result, the corresponding alpha-a... A New Approach to the Synthesis of Peptidomimetic Renin Inhibitors: Palladium-Catalyzed Asymmetric Allylation of Acyclic Alkyl Aryl Ketones [作者：HANESSIAN STEPHEN; CHENARD ETIENNE,期刊：Organic Letters, 页码：3222-3225 , 文章类型： Article，,卷期：2012年14-12] A new approach to the synthesis of Tekturna, a recently marketed drug for hypertension, takes advantage of a modified protocol of the Stoltz palladium-catalyzed asymmetric allylation with a f-BuPHOX ligand for the synthe... Enantioselective Intramolecular Formal [2+4] Annulation of Acrylates and alpha,beta-Unsaturated Imines Catalyzed by Amino Acid Derived Phosphines [作者：JIN ZHICHAO; YANG RUOJIE; DU YU; TIWARI BHOOPENDRA; GANGULY RAKESH; CHI YONGGUI ROBIN,期刊：Organic Letters, 页码：3226-3229 , 文章类型： Article，,卷期：2012年14-12] The first chiral phosphine-catalyzed activation of acrylates for intramolecular formal [2 4] reactions with unsaturated imines is described. The catalytic reactions afford Al-heterocycles with exceptionally high diastere... Intramolecular sigma-Bond Metathesis Between Carbon-Carbon and Silicon-Silicon Bonds [作者：ISHIDA NAOKI; IKEMOTO WATARU; MURAKAMI MASAHIRO,期刊：Organic Letters, 页码：3230-3232 , 文章类型： Article，,卷期：2012年14-12] An intramolecular sigma-bond metathesis between carbon carbon and silicon silicon bonds took place on treatment of a disilane tethered to a cyclobutanone with a palladium(0) catalyst, furnishing a silaindane skeleton as ... Carbenylative Amination with N-Tosylhydrazones [作者：KHANNA AVINASH; MAUNG CHARLES; JOHNSON KYLE R; LUONG TOM T; VAN VRANKEN DAVID L,期刊：Organic Letters, 页码：3233-3235 , 文章类型： Article，,卷期：2012年14-12] A Pd-catalyzed reaction of vinyl iodides and N-tosylhydrazones that assembles eta(3)-allyl ligands through carbene insertion is demonstrated. Intramolecular trapping with nitrogen nucleophiles generates good yields of ci... Environment- and Sequence-Dependence of Helical Type in Membrane-Spanning Peptides Composed of beta(3)-Amino Acids (vol 13, pg 3475, 2011) [作者：KORENDOVYCH IVAN V; SHANDLER SCOTT J; MONTALVO GERONDA L; DEGRADO WILLIAM F,期刊：Organic Letters, 页码：3236-3236 , 文章类型： Correction，,卷期：2012年14-12]