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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34条记录   Metal-free reductive cleavage of N-O bonds in Weinreb amides by an organic neutral super-electron donor. [作者：Cutulic, Sylvain P. Y.;Murphy, John A.;Farwaha, Hardeep;Zhou, Sheng-Ze;Chrystal, Ewan;,期刊：SYNLETT, 页码：2132-2136 , 文章类型： 研究论文，,卷期：2008年-14] The scope of neutral org. super-electron donors as reducing agents was extended to include the reductive cleavage of N-O bonds in Weinreb amides. This methodol. proved to be applicable to a large array of substrates to ... The use of diethylaminosulfur trifluoride (DAST) for fluorination in a continuous-flow microreactor. [作者：Baumann, Marcus;Baxendale, Ian R.;Ley, Steven V.;,期刊：SYNLETT, 页码：2111-2114 , 文章类型： 研究论文，,卷期：2008年-14] The convenient and safe use of diethylaminosulfur trifluoride as a fluorinating agent in a continuous-flow microreactor is described using an in-line purifn. method to obtain clean reaction products. cis-Dihydroxylation of alkenes by a non-heme iron enzyme mimic. [作者：Barry, Sarah M.;Rutledge, Peter J.;,期刊：SYNLETT, 页码：2172-2174 , 文章类型： 研究论文，,卷期：2008年-14] Using the non-heme iron oxidase active site as a template, a peptidomimetic ligand was designed, synthesized, and used to effect the dihydroxylation of alkene substrates. Fenton-type radical pathways are also obsd. A concise synthesis of highly functionalised 4-thiosugar derivatives. [作者：Southern, J. Mike;O'Neil, Ian A.;Kearns, Peter;,期刊：SYNLETT, 页码：2158-2160 , 文章类型： 研究论文，,卷期：2008年-14] A cyclization of a sulfenate and an alkene to generate 4-thiosugars was developed. The first example of the cyclization of a sulfenate and a vinyl chloride is included. A synthetic approach to the communesins. [作者：George, Jonathan H.;Adlington, Robert M.;,期刊：SYNLETT, 页码：2093-2096 , 文章类型： 研究论文，,卷期：2008年-14] A synthetic approach to the communesin family of indole alkaloids was investigated, with a cascade reaction sequence involving formation of a transient 1-alkoxycarbonyl-imidazole intermediate and subsequent addn. onto an... Studies towards the synthesis of coprinolone, D6-coprinolone, and radulone A via an anionic electrocyclization cascade. [作者：Lawrence, Andrew L.;Lee, Victor;Adlington, Robert M.;,期刊：SYNLETT, 页码：2087-2088 , 文章类型： 研究论文，,卷期：2008年-14] Studies towards the synthesis of coprinolone (I), 6,7-didehydrocoprinolone, and radulone A (II), resulting in the synthesis of an advanced intermediate with the tricyclic protoilludane carbon skeleton, are described. Synthesis of bispyrrolidines by radical cyclisation of diallylamines using phosphorus hydrides. [作者：Parsons, Andrew F.;Wright, Anthony;,期刊：SYNLETT, 页码：2142-2146 , 文章类型： 研究论文，,卷期：2008年-14] (Organometallic and Organometalloidal Compounds) Section Sequential radical addn.-cyclization reactions of diallylamines using either hypophosphorous acid or a bisphosphinothioate are shown to afford bispyrrolidines in g... Azide 1,3-dipolar cycloadditions to N-propynoyl and N-propenoyl (5R)-5-phenylmorpholin-2-one: Diastereocontrolled aziridine formation. [作者：Chen, Mindong;Gan, Yu;Harwood, Laurence M.;,期刊：SYNLETT, 页码：2119-2121 , 文章类型： 研究论文，,卷期：2008年-14] (5R)-N-Propynoyl-5-phenylmorpholin-2-one undergoes non-regioselective cycloaddn. with arom. azides to furnish mixts. of the corresponding triazoles, whereas (5R)-N-propenoyl-5-phenylmorpholin-2-one reacts to furnish the ... Diastereoselective thia-Claisen rearrangement of pyrrolidinone-derived ketene N,S-acetals. [作者：Ellwood, Adam R.;Mortimer, Anne J. Price;Tocher, Derek A.;Porter, Michael J.;,期刊：SYNLETT, 页码：2199-2203 , 文章类型： 研究论文，,卷期：2008年-14] (Heterocyclic Compounds (One Hetero Atom)) Section Thia-Claisen rearrangements of S-allylic ketene N,S-acetals were carried out using substrates with an external allylic stereogenic center. High levels of diastereoselect... Sulfur ylide mediated three-component aziridination and epoxidation reactions using vinyl sulfonium salts. [作者：Kokotos, Christoforos G.;McGarrigle, Eoghan M.;Aggarwal, Varinder K.;,期刊：SYNLETT, 页码：2191-2195 , 文章类型： 研究论文，,卷期：2008年-14] Coupling of diphenylvinylsulfonium triflate with nucleophiles and either aldehydes or imines gives epoxides and aziridines, resp., in a 3-component reaction. Cis-Aziridines could be formed in good diastereomeric ratio, ... A cautionary tale in decanolide synthesis. [作者：Simpson, Thomas J.;Soulas, Florilene;Willis, Christine L.;,期刊：SYNLETT, 页码：2196-2198 , 文章类型： 研究论文，,卷期：2008年-14] An efficient convergent approach to the synthesis of the novel dioxolenone alc. I (RR1 = bond) is described. On thermolysis of the latter, the macrodiolide II (RR1 = R2R3 = bond) was obtained via an intermediate b-acyl ... Concise synthesis of key 3-polyenoyl-5-methylenefuran-2,4-dione putative intermediates in quartromicin biosynthesis. [作者：Montgomery, Laura J.;Challis, Gregory L.;,期刊：SYNLETT, 页码：2164-2168 , 文章类型： 研究论文，,卷期：2008年-14] Concise syntheses of two 3-polyenoyl-5-methylenefuran-2,4-diones, which are proposed to be key intermediates in the biosynthesis of the unusual 32-membered carbocycle-contg. quartromicin antibiotics, are reported involvi... Microwave-enhanced a-functionalisation of tetramates. [作者：Moloney, Mark G.;Yaqoob, Muhammad;,期刊：SYNLETT, 页码：2107-2110 , 文章类型： 研究论文，,卷期：2008年-14] Bicyclic tetramic acids may be efficiently allylated or arylated either directly or via the corresponding triflate, using a microwave-enhanced protocol. Under these conditions, the yield and diastereoselectivity are ver... A synthesis of the C(17)-C(27) fragment of bryostatin 1. [作者：Green, Anthony P.;Hardy, Simon;Thomas, Eric J.;,期刊：SYNLETT, 页码：2103-2106 , 文章类型： 研究论文，,卷期：2008年-14] An approach to the C(17)-C(27) fragment of bryostatin 1 (I), based on forming the C(19)-C(20) bond by reaction of an acyl carbanion equiv. at C(19) with an aldehyde, is described. Synthesis of ptaeroxylin (desoxykarenin): an unusual chromone from the sneezewood tree ptaeroxylon obliquum. [作者：Muscarella, Marina;Kimber, Marc C.;Moody, Christopher J.;,期刊：SYNLETT, 页码：2101-2102 , 文章类型： 研究论文，,卷期：2008年-14] The first synthesis of the oxepinochromone ptaeroxylin [also known as desoxykarenin (I)] isolated from the sneezewood tree is described, in which the key steps are a Claisen rearrangement and a ring-closing metathesis to... A semi-pinacol rearrangement approach to bicyclo[3.2.1]octan-2-ones and bicyclo[3.2.1]octan-3-ones. [作者：Lee, Sejin;Kim, Keunho;Cha, Jin Kun;,期刊：SYNLETT, 页码：2155-2157 , 文章类型： 研究论文，,卷期：2008年-14] A diastereoselective approach to bicyclo[3.2.1]octan-2-ones and -3-ones is achieved by the semi-pinacol rearrangement of 2,3-epoxy silyl ethers. The key 1,2-migration is stereospecific. This method is easily amenable t...