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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   Gold-catalyzed double intramolecular alkyne hydroalkoxylation: synthesis of the bisbenzannelated spiroketal core of rubromycins. [作者：Zhang, Yuan;Xue, Jijun;Xin, Zhijun;Xie, Zhixiang;Li, Ying;,期刊：SYNLETT, 页码：940-944 , 文章类型： 研究论文，,卷期：2008年-6] The synthesis of the bisbenzannelated spiroketal core of natural bioactive rubromycins via a gold-catalyzed double intramol. hydroalkoxylation was described. A comparative study on the formation of aliph. and arom. spir... A facile enantioselective synthesis of the dimeric pyranonaphthoquinone core of the cardinalins. [作者：Brimble, Margaret A.;Gibson, Jennifer S.;Sejberg, Jimmy J. P.;Sperry, Jonathan;,期刊：SYNLETT, 页码：867-870 , 文章类型： 研究论文，,卷期：2008年-6] The enantioselective synthesis of a dimeric pyranonaphthoquinone closely related to cardinalin is described. Key steps include the Hauser-Kraus annulation between a cyanophthalide and a chiral enone to create the naphth... Stereoselective synthesis of a lactam analogue of brefeldin C. [作者：Foerster, Sebastian;Helmchen, Guenter;,期刊：SYNLETT, 页码：831-836 , 文章类型： 研究论文，,卷期：2008年-6] A convergent, stereoselective synthesis of a brefeldin C lactam analog is described. Novel features are application of the asym. iridium-catalyzed allylic substitution on a multigram scale for construction of the stereo... A novel chiral H'4-NOBIN Schiff base for hetero-Diels-Alder reaction of Danishefsky's diene with aldehydes. [作者：Li, Xinsheng;Meng, Xiangyan;Su, Hong;Wu, Xiaohua;Xu, Dongcheng;,期刊：SYNLETT, 页码：857-860 , 文章类型： 研究论文，,卷期：2008年-6] 27, 75 Novel chiral H'4-NOBIN, 2'-amino-5,6,7,8-tetrahydro-1,1'-binaphthyl-2-ol was synthesized in 66% yield through partial hydrogenation of 2-amino-2'-hydroxy-1,1'-binaphthyl, and the structure was proven via x-ray ana... A novel efficient four- and five-component, one-pot synthesis of 4-semicarbazonoalkyl-2-naphthols. [作者：Foroughifar, Naser;Mobinikhaledi, Akbar;Moghanian, Hassan;Ebrahimi, Sattar;Fard, Mohammad Ali Bodaghi;,期刊：SYNLETT, 页码：821-826 , 文章类型： 研究论文，,卷期：2008年-6] One-pot, multicomponent coupling reaction of 2 or 3 mols. of aldehydes with 2-naphthols and semicarbazide.HCl is described for the prepn. of 4-semicarbazonoalkyl-2-naphthols using 4-toluenesulfonate/NaOAc as an efficient... Efficient synthesis of bisallylic ethers from Baylis-Hillman adducts promoted by molecular iodine. [作者：Zhao, Peichao;Li, Jian;Jia, Xueshun;,期刊：SYNLETT, 页码：932-934 , 文章类型： 研究论文，,卷期：2008年-6] A straightforward and efficient synthesis of functionalized ethers from Baylis-Hillman (MBH) adducts was disclosed. In the presence of I2, MBH adducts underwent smooth dehydration to give a series of bisallylic sym. eth... Copper-catalyzed, palladium-free carbonylative Sonogashira coupling reaction of aliphatic and aromatic alkynes with iodoaryls. [作者：Tambade, Pawan J.;Patil, Yogesh P.;Nandurkar, Nitin S.;Bhanage, Bhalchandra M.;,期刊：SYNLETT, 页码：886-888 , 文章类型： 研究论文，,卷期：2008年-6] Copper bis(2,2,6,6-tetramethyl-3,5-heptanedionate)-catalyzed carbonylative Sonogashira coupling reactions of aliph./arom. alkynes with iodo arenes are reported for the first time. The protocol eliminates the use of a to... Unexpected Lewis acid mediated reactions of 1-arylbut-3-en-1-ols with trimethyl orthoformate - A new synthesis of homoallyl ethers and chlorides. [作者：Merisor, Elena;Conrad, Juergen;Malakar, Chandi C.;Beifuss, Uwe;,期刊：SYNLETT, 页码：903-907 , 文章类型： 研究论文，,卷期：2008年-6] 1-Arylbut-3-en-1-ols react with HC(OMe)3 in the presence of Lewis acids like InCl3, BiCl3, TiCl4, or BF3.OEt2 to provide homoallyl ethers or homoallyl chlorides in high yields. Synthesis of functionalized enamines: a facile and efficient protocol toward N-protected a,b-dehydroamino acid derivatives. [作者：Sun, Yun;Wang, Xiaozhao;Zheng, Xiufang;Zhao, Kang;,期刊：SYNLETT, 页码：861-866 , 文章类型： 研究论文，,卷期：2008年-6] a,b-Dehydro amino acid derivs. were synthesized in good yields from a-bromo ketones or a-bromo esters and hydroxamates via a sequential procedure involving displacement of bromide by hydroxamate anion, followed by a base... The first synthesis of N-Man-Trp: alternative mannosylation modification of protein. [作者：Manabe, Shino;Ito, Yukishige;,期刊：SYNLETT, 页码：880-882 , 文章类型： 研究论文，,卷期：2008年-6] A novel protein modification, N-mannosyltryptophan (N-Man-Trp) was synthesized in a stereoselective manner masking the amino acid moiety of the tryptophan as a bislactim structure during the glycosylation. Synthesis of 2',3'-dideoxy-2'-fluoro-4'-thionucleosides from a fluoroxanthate. [作者：Jean-Baptiste, Laetitia;Lefebvre, Pierre;Pfund, Emmanuel;Lequeux, Thierry;,期刊：SYNLETT, 页码：817-820 , 文章类型： 研究论文，,卷期：2008年-6] The synthesis of a thiobutyrolactone as precursor of modified nucleosides is reported from a fluoroxanthate and a protected allylic alc. This approach opens a new and straightforward route for the synthesis of 2',3'-did... First example of s-BuLi/(-)-sparteine-mediated chiral deprotonation of a piperazine and proof of the sense of induction. [作者：McDermott, Benjamin P.;Campbell, Andrew D.;Ertan, Anne;,期刊：SYNLETT, 页码：875-879 , 文章类型： 研究论文，,卷期：2008年-6] This paper describes the first known example of a (-)-sparteine-mediated asym. deprotonation of a piperazine. Reaction of tert-Bu 4-tert-butylpiperazine-1-carboxylate with sec-BuLi in the presence of (-)-sparteine at -7... 1,3-Sulfanyl group migration: formation of unexpected trifluoromethyl-containing bridged heterocycles. [作者：Jiang, Huiling;Zhu, Shizheng;,期刊：SYNLETT, 页码：871-874 , 文章类型： 研究论文，,卷期：2008年-6] Concd. H2SO4 promoted the intramol. dehydration and 1,3-sulfanyl migration of 1,1,1-trifluoro-4,4-bis(arylthio)butane-2,2-diol. This afforded, in addn. to the expected unsatd. ketone, an unexpected trifluoromethyl-contg... Synthesis of the C14-C29 segment of amphidinolide U utilizing a tandem dihydroxylation-SN2 cyclization protocol. [作者：Mohapatra, Debendra K.;Rahaman, Hasibur;,期刊：SYNLETT, 页码：837-840 , 文章类型： 研究论文，,卷期：2008年-6] The synthesis of the C(14)-C(29) subunit of amphidinolide U is described. The key steps include trans-2,5-disubstituted tetrahydrofurans via a highly diastereoselective and high-yielding tandem dihydroxylation-SN2 cycli... Palladium-catalyzed addition of arylboronic acids to N-tosylarylimines. [作者：Zhang, Qiang;Chen, Jiuxi;Liu, Miaochang;Wu, Huayue;Cheng, Jiang;Qin, Changming;Su, Weike;Ding, Jinchang;,期刊：SYNLETT, 页码：935-939 , 文章类型： 研究论文，,卷期：2008年-6] Pd-catalyzed addn. reaction of arylboronic acids to N-tosylarylimines was described by employing easily prepd., air-stable aminophosphine ligands, cheap inorg. base, and common org. solvents, providing N-tosyl(diarylmeth... Copper-catalyzed addition of halide and sulfide groups to alkynes utilizing disulfides with tetrabutylammonium halides. [作者：Taniguchi, Nobukazu;,期刊：SYNLETT, 页码：849-852 , 文章类型： 研究论文，,卷期：2008年-6] A copper-catalyzed addn. of halide and sulfide groups to internal alkynes was carried out using disulfides with Bu4NX (X = Br, I, Cl) in air. The present reaction can selectively prep. the corresponding anti-configured h...