Langer P - Search Results

1

A domino reaction of 3-chlorochromones with aminoheterocycles. Synthesis of pyrazolopyridines and benzofuropyridines and their optical and ecto-5'-nucleotidase inhibitory effects.

Miliutina M, Janke J, Hassan S, Zaib S, Iqbal J, Lecka J, Sévigny J, Villinger A, Friedrich A, Lochbrunner S, Langer P. Miliutina M, et al. Among authors: langer p. Org Biomol Chem. 2018 Jan 31;16(5):717-732. doi: 10.1039/c7ob02729j. Org Biomol Chem. 2018. PMID: 29303198

2

Chemoselective, regioselective, and E/Z-diastereoselective synthesis of 2-alkylidenetetrahydrofurans by sequential reactions of ambident dianions and monoanions.

Langer P, Bellur E. Langer P, et al. J Org Chem. 2003 Dec 12;68(25):9742-6. doi: 10.1021/jo034966f. J Org Chem. 2003. PMID: 14656101

3

Domino "[3+3]-cyclization-homo-Michael" reactions of 1,3-bissilyl enol ethers with 1,1-diacylcyclopropanes.

Bose G, Nguyen VT, Ullah E, Lahiri S, Görls H, Langer P. Bose G, et al. Among authors: langer p. J Org Chem. 2004 Dec 24;69(26):9128-34. doi: 10.1021/jo0485278. J Org Chem. 2004. PMID: 15609946

4

Convenient synthesis of epsilon-halo-beta-ketoesters and gamma,gamma'-dibromoalkanones by regio- and chemoselective reaction of 2-alkylidenetetrahydrofurans with boron trihalides: a "ring-closure/ring-cleavage" strategy.

Bellur E, Langer P. Bellur E, et al. Among authors: langer p. J Org Chem. 2005 May 13;70(10):3819-25. doi: 10.1021/jo047824+. J Org Chem. 2005. PMID: 15876066

5

Synthesis of benzofurans with remote bromide functionality by domino "ring-cleavage-deprotection-cyclization" reactions of 2-alkylidenetetrahydrofurans with boron tribromide.

Bellur E, Langer P. Bellur E, et al. Among authors: langer p. J Org Chem. 2005 Sep 16;70(19):7686-93. doi: 10.1021/jo051079z. J Org Chem. 2005. PMID: 16149800

6

Efficient synthesis of furan-2-ylacetates, 7-(alkoxycarbonyl)benzofurans, and 7-(alkoxycarbonyl)-2,3-dihydrobenzofurans based on cyclization reactions of free and masked dianions: a "cyclization/dehydrogenation" strategy.

Bellur E, Langer P. Bellur E, et al. Among authors: langer p. J Org Chem. 2005 Nov 25;70(24):10013-29. doi: 10.1021/jo051767i. J Org Chem. 2005. PMID: 16292835

7

One-pot cyclizations of dilithiated oximes and hydrazones with epibromohydrin. Efficient synthesis of 6-hydroxymethyl-5,6-dihydro-4H-1,2-oxazines and oxazolo[3,4-b]pyridazin-7-ones.

Dang TT, Albrecht U, Gerwien K, Siebert M, Langer P. Dang TT, et al. Among authors: langer p. J Org Chem. 2006 Mar 17;71(6):2293-301. doi: 10.1021/jo052329e. J Org Chem. 2006. PMID: 16526776

8

Domino reactions of 1,2-diimidoyl-1,2-dichloroethanes. Synthesis of 3-imino-1,2-dithia-3h-cyclopent-4-enes, 3-amino-2-thioxo-2,5H-pyrrol-5-ones, 2,3-diamino-4-thioxo-4H-thiopyrans, and 6-imino-6H-1,3-oxazines.

Bellur E, Görls H, Langer P. Bellur E, et al. Among authors: langer p. J Org Chem. 2006 Mar 17;71(6):2332-8. doi: 10.1021/jo052450l. J Org Chem. 2006. PMID: 16526781

9

Synthesis of 2-alkenyl-3-(alkoxycarbonyl)furans based on Feist-Benary cyclocondensation of (2,4-dioxobutylidene)phosphoranes with alpha-haloketones and alpha-chloracetaldehyde.

Mross G, Holtz E, Langer P. Mross G, et al. Among authors: langer p. J Org Chem. 2006 Oct 13;71(21):8045-9. doi: 10.1021/jo061153t. J Org Chem. 2006. PMID: 17025293

10

Synthesis of 1,3,5-tricarbonyl derivatives by condensation of 1,3-bis(silyl enol ethers) with acid chlorides.

Rahn T, Nguyen VT, Dang TH, Ahmed Z, Methling K, Lalk M, Fischer C, Spannenberg A, Langer P. Rahn T, et al. Among authors: langer p. J Org Chem. 2007 Mar 16;72(6):1957-61. doi: 10.1021/jo062153w. Epub 2007 Feb 8. J Org Chem. 2007. PMID: 17286437

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