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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   Beckmann rearrangement of oximes catalyzed by cyanuric chloride in ionic liquids. [作者：Betti, Cecilia;Landini, Dario;Maia, Angelamaria;Pasi, Maurizio;,期刊：SYNLETT, 页码：908-910 , 文章类型： 研究论文，,卷期：2008年-6] The Beckmann rearrangement of a variety of ketoximes was carried out in imidazolium-based ionic liqs. in the presence of catalytic amts. of 2,4,6-trichloro[1,3,5]triazine. This mild and green procedure is highly regiose... Aryl cation chemistry as an emerging versatile tool for metal-free arylations. [作者：Dichiarante, Valentina;Fagnoni, Maurizio;,期刊：SYNLETT, 页码：787-800 , 文章类型： 综述，,卷期：2008年-6] A review. The development of transition-metal-free arylation procedures represents a key goal in modern org. synthesis. A green arylation can be obtained by having recourse to light as a "clean" reagent in place of tox... Silver(I)-catalyzed direct route to isoquinoline-N-oxides. [作者：Yeom, Hyun-Suk;Kim, Sunghwan;Shin, Seunghoon;,期刊：SYNLETT, 页码：924-928 , 文章类型： 研究论文，,卷期：2008年-6] Silver trifluoromethanesulfonate efficiently catalyzes the cyclization of 2-alkynylbenzaldoxime derivs. into the corresponding isoquinoline N-oxides. The current protocol provides a direct route to the latter skeleton u... Direct and facile bromination at the 5- and 5'-positions of (R)-6,6'-dialkyl- and (R)-6,6'-diaryl-2,2'-binaphthols. [作者：Zhang, Shuwei;Liu, Yan;Huang, Hui;Zheng, Lifei;Wu, Linglin;Cheng, Yixiang;,期刊：SYNLETT, 页码：853-856 , 文章类型： 研究论文，,卷期：2008年-6] (R)-6,6'-Dibutyl-, -bis(4-methylphenyl)-, -bis(3,5-dimethylphenyl)-, and -bis[4-(trifluoromethyl)phenyl]-5,5'-dibromo-2,2'-binaphthol were synthesized from (R)-1,1'-bi-2-naphthol by a 5-step reaction in excellent yields ... Cope-House cyclization strategy for the synthesis of pyrrolizidines: an expedient route to 5-epi-hyacinthacine A3 and 5-epi-hyacinthacine A5. [作者：Kaliappan, Krishna P.;Das, Prasanta;,期刊：SYNLETT, 页码：841-844 , 文章类型： 研究论文，,卷期：2008年-6] An expedient Cope-House cyclization strategy is reported for the synthesis of several polyhydroxy pyrrolizidine alkaloids starting from sugar-derived nitrones. Expedient synthetic transformation of ptychantins into forskolin. [作者：Hagiwara, Hisahiro;Tsukagoshi, Masashi;Hoshi, Takashi;Suzuki, Toshio;Hashimoto, Toshihiro;Asakawa, Yoshinori;,期刊：SYNLETT, 页码：929-931 , 文章类型： 研究论文，,卷期：2008年-6] Forskolin was synthesized in 11 steps with a 17% overall yield from ptychantins A and B, which were isolated from the liverwort Ptychanthus striatus in good yield. The 1a-hydroxy group was furnished by stereoselective r... Butyltellurium tribromide: a suitable electrophilic source to cyclization reactions. [作者：Alves, Diego;Prigol, Marina;Nogueira, Cristina W.;Zeni, Gilson;,期刊：SYNLETT, 页码：914-918 , 文章类型： 研究论文，,卷期：2008年-6] The electrophilic cyclization reaction of (Z)-chalcogenoenynes using butyltellurium tribromide as an electrophilic source is presented. The cyclization reaction proceeded cleanly under mild reaction conditions and 3-(bu... Sequential electrophilic trapping reactions for the desymmetrization of dilithio(hetero)arenes. [作者：Muschelknautz, Christian;Sailer, Markus;Mueller, Thomas J. J.;,期刊：SYNLETT, 页码：845-848 , 文章类型： 研究论文，,卷期：2008年-6] Double Br-Li exchange and sequential trapping of the dilithio intermediate with different electrophiles gives unsym. substituted (hetero)arenes in a 1-pot fashion. E.g., reaction of 2,5-dibromothiophene with nBuLi/TMEDA... A novel approach for the synthesis of highly fluorescent pyrrolo[1,2-b]pyridazines. [作者：Dumitrascu, Florea;Caira, Mino R.;Draghici, Bogdan;Caproiu, Miron Teodor;Dumitrescu, Dan G.;,期刊：SYNLETT, 页码：813-816 , 文章类型： 研究论文，,卷期：2008年-6] Pyrrolo[1,2-b]pyridazine derivs. were synthesized for the first time by 1,3-dipolar cycloaddn. reaction between mesoionic 1,3-oxazolo[3,2-b]pyridazinium 2-oxides and acetylenic dipolarophiles. The isolation and character... A facile aerobic copper-catalyzed a-oxygenation of aryl thioacetamides: an efficient access to a-keto aryl thioamides. [作者：Moghaddam, Firouz Matloubi;Mirjafary, Zohreh;Saeidian, Hamdollah;Javan, Marjan Jebeli;,期刊：SYNLETT, 页码：892-896 , 文章类型： 研究论文，,卷期：2008年-6] Copper(II) efficiently catalyzes the aerobic oxidn. of aryl thioacetamides into the corresponding a-keto aryl thioamides in moderate to high yields in the presence of K2CO3 under O2 atmosphere. This protocol is simple, ... Efficient access to isoxazoles from alkenes. [作者：Xu, Jianping;Hamme, Ashton T., II;,期刊：SYNLETT, 页码：919-923 , 文章类型： 研究论文，,卷期：2008年-6] The direct regioselective synthesis of 3,5-disubstituted isoxazoles was achieved in one reaction vessel through a sequence of reactions involving the net bromination of an electron-deficient alkene, in-situ generation of... A versatile entry to 3-unsubstituted 2-isoxazolines. [作者：Pohjakallio, Antti;Pihko, Petri M.;,期刊：SYNLETT, 页码：827-830 , 文章类型： 研究论文，,卷期：2008年-6] A new catalytic method for the prepn. of 3-unsubstituted 2-isoxazolines is reported. The isoxazolines are easily prepd. from the aliph. a,b-unsatd. aldehydes and simple oximes in the presence of an anilinium salt cataly... Methoxide ion promoted efficient synthesis of 1,3-oxathiolane-2-thiones by reaction of oxiranes and carbon disulfide. [作者：Yavari, Issa;Ghazanfarpour-Darjani, Majid;Hossaini, Zinatossadat;Sabbaghan, Maryam;Hosseini, Nargess;,期刊：SYNLETT, 页码：889-891 , 文章类型： 研究论文，,卷期：2008年-6] An efficient one-pot synthesis of functionalized 1,3-oxathiolane-2-thiones is described via reaction of CS2 with oxiranes in the presence of NaH (10 mol%) and MeOH. Efficient synthesis of Hantzsch esters and polyhydroquinoline derivatives in aqueous micelles. [作者：Kumar, Atul;Maurya, Ram Awatar;,期刊：SYNLETT, 页码：883-885 , 文章类型： 研究论文，,卷期：2008年-6] Hantzsch 1,4-dihydropyridine and polyhydroquinoline derivs. were synthesized in excellent yields in aq. micelles. The reaction is catalyzed by PTSA and strongly accelerated by ultrasonic irradn. The reaction of a,b-unsaturated sulfones with isobenzofuran and N-Boc-isoindole using Warrener's methodology. [作者：Rincon, Rocio;Plumet, Joaquin;,期刊：SYNLETT, 页码：911-913 , 文章类型： 研究论文，,卷期：2008年-6] The Diels-Alder cycloaddn. reaction of vinyl and acetylenic sulfones with isobenzofuran {benzo[c]furan} and N-Boc-isoindole generated in situ using Warrener's tetrazine method is described for the first time. Task-specific basic ionic liquid: a reusable and green catalyst for one-pot synthesis of highly functionalized pyrroles in aqueous media. [作者：Yavari, Issa;Kowsari, Elaheh;,期刊：SYNLETT, 页码：897-899 , 文章类型： 研究论文，,卷期：2008年-6] A basic functionalized ionic liq., 1-butyl-3-methylimidazolium hydroxide ([bmim]OH), catalyzed the three-component condensation reaction of acid chlorides, amino acids, and dialkyl acetylenedicarboxylates in water to aff...