- An efficient copper-aluminum hydrotalcite catalyst for asymmetric hydrosilylation of ketones at room temperature.
[作者:Kantam, M. Lakshmi;Laha, Soumi;Yadav, Jagjit;Likhar, Pravin R.;Sreedhar, Bojja;Jha, Shailendra;Bhargava, Suresh;Udayakiran, M.;Jagadeesh, B.;,期刊:Organic Letters, 页码:2979-2982 , 文章类型: 研究论文,,卷期:2008年10-14]
- A catalyst system consisting of a copper-aluminum hydrotalcite-chiral diphosphine ligand effects asym. hydrosilylation of several ketones, using polymethylhydrosiloxane (PMHS) as the stoichiometric reducing agent at room...
- Synthesis of sultam scaffolds via intramolecular oxa-Michael and diastereoselective Baylis-Hillman reactions.
[作者:Zhou, Aihua;Hanson, Paul R.;,期刊:Organic Letters, 页码:2951-2954 , 文章类型: 研究论文,,卷期:2008年10-14]
- A divergent synthetic approach to sultams, e.g., I and II, utilizing intramol. oxa-Michael and Baylis-Hillman reactions of readily prepd. vinyl sulfonamides and suitably protected amino alcs., is reported. A variety of ...
- Copper(II)-Catalyzed Exo and Enantioselective Cycloadditions of Azomethine Imines.
[作者:Sibi, Mukund P.;Rane, Digamber;Stanley, Levi M.;Soeta, Takahiro;,期刊:Organic Letters, 页码:2971-2974 , 文章类型: 研究论文,,卷期:2008年10-14]
- A strategy for exo and enantioselective 1,3-dipolar cycloaddn. of azomethine imines to 2-acryloyl-3-pyrazolidinone is described. The corresponding cycloadducts, e.g., I, are isolated with high diastereoselectivities (up...
- Synthesis of 1(2H)-Isoquinolones by the Nickel-Catalyzed Denitrogenative Alkyne Insertion of 1,2,3-Benzotriazin-4(3H)-ones.
[作者:Miura, Tomoya;Yamauchi, Motoshi;Murakami, Masahiro;,期刊:Organic Letters, 页码:3085-3088 , 文章类型: 研究论文,,卷期:2008年10-14]
- 1,2,3-Benzotriazin-4(3H)-ones reacted with internal and terminal alkynes in the presence of a nickel(0)/phosphine catalyst to give a wide range of substituted 1(2H)-isoquinolones, e.g., I (R1 = Me, Bn, Ph, 4-Me-Ph, 4-MeO...
- Diastereoselective cobalt-catalyzed alkylative aldol cyclizations using trialkylaluminum reagents.
[作者:Rudkin, Mairi E.;Joensuu, Pekka M.;MacLachlan, William S.;Lam, Hon Wai;,期刊:Organic Letters, 页码:2939-2942 , 文章类型: 研究论文,,卷期:2008年10-14]
- Co(acac)2?H2O serves as an effective precatalyst for alkylative aldol cyclizations of a,b-unsatd. amides with ketones using trialkylaluminum reagents. These reactions provide b-hydroxylactams, e.g., I, contg. three cont...
- A Novel Redox-Fluorescence Switch Based on a Triad Containing Ferrocene and Perylene Diimide Units.
[作者:Zhang, Ruili;Wang, Zhongliang;Wu, Yishi;Fu, Hongbing;Yao, Jiannian;,期刊:Organic Letters, 页码:3065-3068 , 文章类型: 研究论文,,卷期:2008年10-14]
- By taking advantage of the features of ferrocene as a redox-active electron donor unit and perylene diimide as a fluorescence unit, a new redox fluorescence switch can be constructed from this triad.
- A novel fluoride ion colorimetric chemosensor.
[作者:Yeo, Hyoung Min;Ryu, Byung Ju;Nam, Kye Chun;,期刊:Organic Letters, 页码:2931-2934 , 文章类型: 研究论文,,卷期:2008年10-14]
- A novel phosphonium deriv. of naphthalene was synthesized by the reaction of 1,8-dibromomethylnaphthalene with triphenylphosphine, which only showed a distinct color change when treated with fluoride ions.
- Fluorescence Response of a 4-Trifluoroacetylaminophthalimide to Iodide Ions upon 254 nm Irradiation in MeCN.
[作者:Okamoto, Hideki;Konishi, Hiroyuki;Kohno, Mami;Satake, Kyosuke;,期刊:Organic Letters, 页码:3125-3128 , 文章类型: 研究论文,,卷期:2008年10-14]
- Photochemistry, and Photographic and Other Reprographic The title trifluoroacetylaminophthalimide deriv. produced a violet fluorescence (lFLmax 392 nm) in MeCN, and it displayed a green emission (lFLmax 506 nm) after irr...
- Gold-Catalyzed Synthesis of Polycyclic Enones from Carbon Tethered 1,3-Enynyl Carbonyls via Tandem Heteroenyne Metathesis and Nazarov Reaction.
[作者:Jin, Tienan;Yamamoto, Yoshinori;,期刊:Organic Letters, 页码:3137-3139 , 文章类型: 研究论文,,卷期:2008年10-14]
- An efficient and general Au(III)-catalyzed tandem reaction, heteroenyne metathesis and Nazarov cyclization, of 1,3-enynyl ketones to produce fused tri- and tetracyclic enones has been developed. The products were formed...
- Autophagy-Modulating Aminosteroids Isolated from the Sponge Cliona celata.
[作者:Keyzers, Robert A.;Daoust, Julie;Davies-Coleman, Michael T.;Van Soest, Rob;Balgi, Aruna;Donohue, Elizabeth;Roberge, Michel;Andersen, Raymond J.;,期刊:Organic Letters, 页码:2959-2962 , 文章类型: 研究论文,,卷期:2008年10-14]
- Clionamines A-D (I), new aminosteroids that modulate autophagy, have been isolated from South African specimens of the sponge Cliona celata. Clionamine D has an unprecedented spiro bislactone side chain.
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