- FeCl3-catalysed cleavage of 1,2-butanediacetal protected diols.
[作者:Tzschucke, C. Christoph;Pradidphol, Narathip;Dieguez-Vazquez, Alejandro;Kongkathip, Boonsong;Kongkathip, Ngampong;Ley, Steven V.;,期刊:SYNLETT, 页码:1293-1296 , 文章类型: 研究论文,,卷期:2008年-9]
- Catalytic FeCl3 in AcOH was employed as a cost-effective, low-toxicity reagent for the removal of butane 1,2-diacetal protecting groups under mild conditions.
- Intramolecular Friedel-Crafts reaction of indoles with carbonyl groups: a simple synthesis of 3- and 4-substituted b-carbolin-1-ones.
[作者:Cincinelli, Raffaella;Dallavalle, Sabrina;Merlini, Lucio;,期刊:SYNLETT, 页码:1309-1312 , 文章类型: 研究论文,,卷期:2008年-9]
- The intramol. Friedel-Crafts reaction of indole-2-carboxylic acid b-oxoamides catalyzed by trifluoroacetic acid or InCl3, is a convenient method for the synthesis of 3-aryl-, 4-aryl-, and 4-alkyl-b-carbolin-1-ones.
- Enantioselective synthesis of 3,3-disubstituted indolines via asymmetric intramolecular carbolithiation in the presence of (-)-sparteine.
[作者:Groth, Ulrich;Koettgen, Peter;Langenbach, Philipp;Lindenmaier, Andreas;Schuetz, Thorben;Wiegand, Matthias;,期刊:SYNLETT, 页码:1301-1304 , 文章类型: 研究论文,,卷期:2008年-9]
- N-Allyl-N-benzyl-2-bromoanilines underwent an asym. intramol. carbolithiation in the presence of tert-BuLi and (-)-sparteine yielding 3,3-disubstituted indolines.
- Novel binaphthalene-amine catalysts for the asymmetric epoxidation of alkenes.
[作者:Page, Philip C. Bulman;Farah, Mohamed M.;Buckley, Benjamin R.;Blacker, A. John;Lacour, Jerome;,期刊:SYNLETT, 页码:1381-1385 , 文章类型: 研究论文,,卷期:2008年-9]
- A range of binaphthalene-derived azepine derivs. contg. alc. functionality were prepd. and utilized as catalysts in the asym. epoxidn. of alkenes by Oxone, giving ?1% ee. Evidence was obtained for the involvement of imi...
- A mild synthesis of nitriles by von Braun degradation of amides using triphenyl phosphite-halogen-based reagents.
[作者:Vaccari, Daniele;Davoli, Paolo;Spaggiari, Alberto;Prati, Fabio;,期刊:SYNLETT, 页码:1317-1320 , 文章类型: 研究论文,,卷期:2008年-9]
- A mild procedure for the synthesis of arom. and aliph. nitriles is disclosed. In the presence of Br(PhO)3P+Br- (TPPBr2), N-alkyl and N,N-dialkyl amides undergo von Braun degrdn. to nitriles in good to excellent yields u...
- Gold(I)-catalyzed cycloisomerization of (arene)chromium complexes with enyne bonds directed towards axially chiral biaryls.
[作者:Michon, Christophe;Liu, Suyun;Hiragushi, Shinya;Uenishi, Jun'ichi;Uemura, Motokazu;,期刊:SYNLETT, 页码:1321-1324 , 文章类型: 研究论文,,卷期:2008年-9]
- Asym. arene-chromium complexes bearing enyne substituents undergo stereoselective cyclization into planar- and axial-chiral h6-biaryl complexes, catalyzed by gold(I) complex [(PPh3)AuNTf2] in good yields. . Cyclization ...
- Reactions of heterocyclic ketene aminals with Baylis-Hillman acetates: a novel synthesis of tetrahydropyridine-fused 1,3-diaza heterocycles.
[作者:Yaqub, Muhammad;Yu, Chu-Yi;Jia, Yue-Mei;Huang, Zhi-Tang;,期刊:SYNLETT, 页码:1357-1360 , 文章类型: 研究论文,,卷期:2008年-9]
- A novel method for the synthesis of tetrahydropyridine-fused 1,3-diaza heterocycles was developed via the reaction of heterocyclic ketene aminals (HKAs) with Baylis-Hillman acetates (B-H acetates).
- Efficient synthesis of 2-substituted benzoxazoles via Beckmann rearrangement of 2-hydroxyaryl ketoximes using diethyl chlorophosphate.
[作者:Sardarian, A. R.;Shahsavari-Fard, Z.;,期刊:SYNLETT, 页码:1391-1393 , 文章类型: 研究论文,,卷期:2008年-9]
- An efficient method for the synthesis of 2-substituted benzoxazoles, e.g., I has been developed using di-Et chlorophosphate. 2-Hydroxyaryl ketoximes, e.g., II are efficiently converted to benzoxazoles by heating in the ...
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