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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   Copper-catalyzed sulfonylation of arylboronic acids in ionic liquids. [作者：Kantam, M. Lakshmi;Neelima, B.;Sreedhar, B.;Chakravarti, Rajashree;,期刊：SYNLETT, 页码：1455-1458 , 文章类型： 研究论文，,卷期：2008年-10] Cupric acetate in ionic liqs. (ILs) catalyzes coupling reaction of arylboronic acids with sulfinic acid salts to afford aryl sulfones in good yields under ambient conditions. This mild and efficient cross-coupling react... Zn(II)-Catalyzed desymmetrization of meso-epoxides by aromatic amines in water. [作者：Bonollo, Simona;Fringuelli, Francesco;Pizzo, Ferdinando;Vaccaro, Luigi;,期刊：SYNLETT, 页码：1574-1578 , 文章类型： 研究论文，,卷期：2008年-10] The Zn(OTf)2-sodium dodecyl sulfate (SDS)-bipyridine I system has proven to be an effective catalyst in water for the desymmetrization of meso-epoxides by anilines. After obtaining comparable results by using Sc(III)-SD... Allylic substitution of meso-1,4-diacetoxycycloalkenes in water with an amphiphilic resin-supported chiral palladium complex. [作者：Uozumi, Yasuhiro;Takenaka, Hiroe;Suzuka, Toshimasa;,期刊：SYNLETT, 页码：1557-1561 , 文章类型： 研究论文，,卷期：2008年-10] Asym. p-allylic substitution of meso-1,4-diacetoxycyclopentene and -cyclohexene with various nucleophiles was performed with an resin-supported chiral imidazoindolephosphine-palladium complex in water as a single reactio... Efficient and recyclable catalyst of palladium nanoparticles stabilized by polymer micelles soluble in water for Suzuki-Miyaura reaction, Ostwald ripening process with palladium nanoparticles. [作者：Beletskaya, Irina P.;Kashin, Alexander N.;Khotina, Irina A.;Khokhlov, Alexey R.;,期刊：SYNLETT, 页码：1547-1552 , 文章类型： 研究论文，,卷期：2008年-10] The Suzuki-Miyaura cross-coupling reaction of aryl iodides and bromides with areneboronates, catalyzed by Pd-contg. water-sol. micelles formed by PS-PEO copolymer and N-cetylpyridinium chloride as a surfactant, was studi... Optimization of asymmetric oxidation of sulfides with the Fe(salan) complex in water and the expanded scope of its application. [作者：Egami, Hiromichi;Katsuki, Tsutomu;,期刊：SYNLETT, 页码：1543-1546 , 文章类型： 研究论文，,卷期：2008年-10] The scope of asym. oxidn. of sulfides using Fe(salan) complex as a catalyst and aq. hydrogen peroxide as an oxidant in water was broadened by optimizing the reaction conditions with respect to reaction temp., catalyst lo... Dehydrative amination of alcohols in water using a water-soluble calix[4]resorcinarene sulfonic acid. [作者：Shirakawa, Seiji;Shimizu, Shoichi;,期刊：SYNLETT, 页码：1539-1542 , 文章类型： 研究论文，,卷期：2008年-10] A protocol for the dehydrative amination of alcs. in water using a water-sol. calix[4]resorcinarene sulfonic acid as a reusable multifunctional catalyst was developed. Facile and selective synthesis of propargylic amines and 1,6-diynes: one-pot three-component coupling reactions of alkynylsilanes, aldehydes and amines by a cooperative catalytic system comprised of CuCl and Cu(OTf)2. [作者：Sakai, Norio;Uchida, Naoki;Konakahara, Takeo;,期刊：SYNLETT, 页码：1515-1519 , 文章类型： 研究论文，,卷期：2008年-10] Described herein is a three-component coupling reaction of alkynylsilanes, aldehydes, and amines by a cooperative catalytic system comprised of CuCl and Cu(OTf)2, leading to the prodn. of a variety of propargyl amine der... Catalytic asymmetric formation of secondary allylic amines by aza-Claisen rearrangement of trifluoroacetimidates. [作者：Xin, Zhuo-qun;Fischer, Daniel F.;Peters, Rene;,期刊：SYNLETT, 页码：1495-1499 , 文章类型： 研究论文，,卷期：2008年-10] A catalytic asym. synthesis of unprotected secondary allylic amines based on the aza-Claisen rearrangement of N-aryl- and N-alkyl-substituted trifluoroacetimidates was developed, which provides the targeted products with... An efficient organocatalyzed interconversion of silyl ethers to tosylates using DBU and p-toluenesulfonyl fluoride. [作者：Gembus, Vincent;Marsais, Francis;Levacher, Vincent;,期刊：SYNLETT, 页码：1463-1466 , 文章类型： 研究论文，,卷期：2008年-10] reported with good yields. This silyl-sulfonyl exchange proceeds readily in MeCN at room temp. in the presence of tosyl fluoride and a catalytic amt. of DBU. This method can be used with SiMe3, SiEt3, and SiMe2CMe3 eth... Efficient synthesis of (3R,5S)-3,5,6-trihydroxyhexanoic acid derivative as a chiral side chain of statins. [作者：Choi, Hyeong-wook;Shin, Hyunik;,期刊：SYNLETT, 页码：1523-1525 , 文章类型： 研究论文，,卷期：2008年-10] Efficient synthesis of (3R,5S)-6-hydroxymethyl-2,2-dimethyl-1,3-dioxane-4-acetate (I) was accomplished. Unprecedented hydration of (S)-4-hydroxyfuran-2-ylideneacetate in the presence of LiCl provided (R)-5,6-dihydroxy-3... Expedient Mukaiyama-type Mannich reaction catalyzed by lithium chloride. [作者：Hagiwara, Hisahiro;Iijima, Daiki;Awen, Bahlul Z. S.;Hoshi, Takashi;Suzuki, Toshio;,期刊：SYNLETT, 页码：1520-1522 , 文章类型： 研究论文，,卷期：2008年-10] The Mannich reaction of methylsilyl enol ether with aryl aldimine proceeded in the presence of a catalytic amt. of LiCl in DMF at room temp. The reaction was mild enough to apply to aldimines having the AcO, Me3CMe2SiO,... The effectiveness of proteinogenic amino acids in the asymmetric aldol reaction in DMSO and aqueous DMSO. [作者：Hayashi, Yujiro;Itoh, Takahiko;Nagae, Norio;Ohkubo, Masahiro;Ishikawa, Hayato;,期刊：SYNLETT, 页码：1565-1570 , 文章类型： 研究论文，,卷期：2008年-10] 34 The effects of twenty proteinogenic amino acids have been investigated in the aldol reaction of aldehydes and ketones in DMSO and aq. DMSO (in the presence of three equiv. of water). Not only proline but also other a... Rapid asymmetric access to b-hydroxysulfinic acids and allylsulfonic acids by chemoselective reduction of b-sultones. [作者：Koch, Florian M.;Peters, Rene;,期刊：SYNLETT, 页码：1505-1509 , 文章类型： 研究论文，,卷期：2008年-10] The redn. of readily available optically active b-sultones bearing a b-trichloromethyl substituent proceeds chemoselectively at 3 different sites via C-Cl, C-O, or S-O bond cleavage and allows for the formation of highly... A simple zinc-mediated preparation of selenols. [作者：Santi, Claudio;Santoro, Stefano;Testaferri, Lorenzo;Tiecco, Marcello;,期刊：SYNLETT, 页码：1471-1474 , 文章类型： 研究论文，,卷期：2008年-10] Under acidic conditions zinc reduces diselenides to afford selenols, which can be either isolated or treated in situ with alkyl halides to produce alkyl selenides or with epoxides to give b-hydroxyselenides. Synthesis of 8-heteroaryl-2'-deoxyguanosine derivatives. [作者：Hobley, Gerard;Gubala, Vladimir;Rivera-Sanchez, Maria Del C.;Rivera, Jose M.;,期刊：SYNLETT, 页码：1510-1514 , 文章类型： 研究论文，,卷期：2008年-10] We describe the synthesis of 8-hetaryl-2'-deoxyguanosine analogs using Suzuki-Miyaura or Stille conditions. Unprotected and protected 8-bromo-2'-deoxyguanosine was coupled with com. available hetarylboronates or trialky... Mechanistic studies on the roles of cosolvents and additives in samarium(II)-based reductions. [作者：Flowers, Robert A., II;,期刊：SYNLETT, 页码：1427-1439 , 文章类型： 综述，,卷期：2008年-10] A review. This account describes work, performed by the author's research group during the past decade, designed to understand the mechanistic roles of cosolvents and additives in redns. involving SmI2. Emphasis is plac...