- 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...
- 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 ...
- 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...
- 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...
- 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.
- 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...
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