- Enantioselective synthesis of anti-b-substituted g,d-unsaturated amino acids: a highly selective asymmetric thio-Claisen rearrangement.
[作者:[Erratum to document cited in CA149:331946]. Liu, Zhihua;Qu, Hongchang;Gu, Xuyuan;Min, Byoung J.;Nyberg, Joel;Hruby, Victor J.;,期刊:Organic Letters, 页码:497-497 , 文章类型: 研究论文,,卷期:2009年11-2]
- On page 4105, the author list was incomplete, and should read: "Zhihua Liu, Hongchang Qu, Xuyuan Gu, Byoung J. Min, Gary S. Nichol, Joel Nyberg, and Victor J. Hruby". On page S1, in the Supporting Information, the list ...
- Reaction discovery employing macrocycles: transannular cyclizations of macrocyclic bis-lactams.
[作者:Han, Chong;Rangarajan, Sathish;Voukides, Alicia C.;Beeler, Aaron B.;Johnson, Richard;Porco, John A.;,期刊:Organic Letters, 页码:413-416 , 文章类型: 研究论文,,卷期:2009年11-2]
- Macrocyclic bis-lactams have been synthesized by cyclodimerization of homoallylic amino esters employing a Zr(IV)-catalyzed ester-amide exchange protocol. Base-mediated transannular cyclizations have been identified to ...
- Direct preparation of unsymmetrical difunctionalized cyclen derivatives by an Ugi multicomponent reaction.
[作者:Piersanti, Giovanni;Remi, Francesco;Fusi, Vieri;Formica, Mauro;Giorgi, Luca;Zappia, Giovanni;,期刊:Organic Letters, 页码:417-420 , 文章类型: 研究论文,,卷期:2009年11-2]
- An efficient synthetic protocol for the prepn. of unsym. difunctionalized cyclen and its close derivs. using a modified Ugi reaction (N-split Ugi) is described. The scope of this methodol. is further extended by the suc...
- Catalytic asymmetric synthesis of an HIV integrase inhibitor.
[作者:Zhong, Yong-Li;Krska, Shane W.;Zhou, Hua;Reamer, Robert A.;Lee, Jaemoon;Sun, Yongkui;Askin, David;,期刊:Organic Letters, 页码:369-372 , 文章类型: 研究论文,,卷期:2009年11-2]
- An efficient synthesis of HIV integrase inhibitor I via a unique asym. hydrogenation of a mixt. of imines/enamine is described. Hydrogenation of the imines/enamine by a Rh(I)-Josiphos complex afforded II in 90% yield and...
- A Novel and Convenient Protocol for Synthesis of Pyridazines.
[作者:Attanasi, Orazio A.;Favi, Gianfranco;Filippone, Paolino;Perrulli, Francesca R.;Santeusanio, Stefania;,期刊:Organic Letters, 页码:309-312 , 文章类型: 研究论文,,卷期:2009年11-2]
- A new flexible strategy for the synthesis of diversely functionalized pyridazines from 4-chloro-1,2-diaza-1,3-butadienes and active methylene compds. is reported. The high chemoselectivity of this approach offers access...
- A Straightforward Synthesis of Benzothiazines.
[作者:Gimbert, Carolina;Vallribera, Adelina;,期刊:Organic Letters, 页码:269-271 , 文章类型: 研究论文,,卷期:2009年11-2]
- A series of 4H-3,1-benzothiazines (I, R = alkyl, aryl; Z = CO2Et, CN) have been successfully synthesized through a three-step sequence starting from com. available 2-iodoaniline. The key step consists of the cyclization...
- Singlet-Oxygen-Mediated One-Pot Synthesis of 3-Keto-tetrahydrofurans from 2-(b-Hydroxyalkyl) Furans.
[作者:Tofi, Maria;Koltsida, Konstantina;Vassilikogiannakis, Georgios;,期刊:Organic Letters, 页码:313-316 , 文章类型: 研究论文,,卷期:2009年11-2]
- Photooxygenation of 2-(b-hydroxyalkyl) furans affords, in one synthetic operation and in high yields, 3-keto-tetrahydrofuran motifs via intramol. Michael-type addn. to the 1,4-enedione intermediate.
- Synthesis of Optically Active Arylaziridines by Regio- and Stereospecific Lithiation of N-Bus-Phenylaziridine.
[作者:Musio, Biagia;Clarkson, Guy J.;Shipman, Michael;Florio, Saverio;Luisi, Renzo;,期刊:Organic Letters, 页码:325-328 , 文章类型: 研究论文,,卷期:2009年11-2]
- a,a-Disubstituted aziridines, e.g. I (R = SiMe2, D, SnBu3, Me, etc.), can be produced in good yields by selective lithiation of N-tert-butylsulfonyl-2-phenylaziridine (n-BuLi/TMEDA, Et2O) at the benzylic position and sub...
- Toward the Total Synthesis of the Brasilinolides: Stereocontrolled Assembly of a C1-C19 Polyol Segment.
[作者:Paterson, Ian;Muhlthau, Friedrich A.;Cordier, Christopher J.;Housden, Michael P.;Burton, Paul M.;Loiseleur, Olivier;,期刊:Organic Letters, 页码:353-356 , 文章类型: 研究论文,,卷期:2009年11-2]
- such as brasilinolide A is prepd. convergently using the 1,5-anti distereoselective aldol addn. reactions of dicyclohexylboron enolates derived from Me ketones with nonracemic aldehydes as the key steps. I is assembled f...
- A Facile Deprotection of Secondary Acetamides.
[作者:Koenig, Stefan G.;Vandenbossche, Charles P.;Zhao, Hang;Mousaw, Patrick;Singh, Surendra P.;Bakale, Roger P.;,期刊:Organic Letters, 页码:433-436 , 文章类型: 研究论文,,卷期:2009年11-2]
- Imidoyl chlorides, generated from secondary acetamides and oxalyl chloride, can be harnessed for a selective and practical deprotection sequence. Treatment of these intermediates with 2 equiv of propylene glycol and war...
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