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Items: 1 to 20 of 156

1.

Hydrolytic enantioselective protonation of cyclic dienyl esters and a β-diketone with chiral phase-transfer catalysts.

Yamamoto E, Gokuden D, Nagai A, Kamachi T, Yoshizawa K, Hamasaki A, Ishida T, Tokunaga M.

Org Lett. 2012 Dec 21;14(24):6178-81. doi: 10.1021/ol3027363. Epub 2012 Dec 3.

PMID:
23205886
2.

Chiral primary-secondary diamines catalyzed Michael-aldol-dehydration reaction between benzoylacetates and alpha,beta-unsaturated ketones: highly enantioselective synthesis of functionalized chiral cyclohexenones.

Yang YQ, Chai Z, Wang HF, Chen XK, Cui HF, Zheng CW, Xiao H, Li P, Zhao G.

Chemistry. 2009 Dec 14;15(48):13295-8. doi: 10.1002/chem.200901541. No abstract available.

PMID:
19908264
3.

Organocatalytic asymmetric direct alpha-alkynylation of cyclic beta-ketoesters.

Poulsen TB, Bernardi L, Aleman J, Overgaard J, Jørgensen KA.

J Am Chem Soc. 2007 Jan 17;129(2):441-9.

PMID:
17212424
4.

A simple asymmetric organocatalytic approach to optically active cyclohexenones.

Carlone A, Marigo M, North C, Landa A, Jørgensen KA.

Chem Commun (Camb). 2006 Dec 21;(47):4928-30. Epub 2006 Oct 5.

PMID:
17136250
5.

Enantioselective protonation of alkenyl trifluoroacetates catalyzed by chiral tin methoxide.

Yanagisawa A, Sugita T, Yoshida K.

Chemistry. 2013 Nov 25;19(48):16200-3. doi: 10.1002/chem.201302975. Epub 2013 Oct 31.

PMID:
24174038
6.

Stereoselective synthesis of cyclohexanones via phase transfer catalyzed double addition of nucleophiles to divinyl ketones.

Silvanus AC, Groombridge BJ, Andrews BI, Kociok-Köhn G, Carbery DR.

J Org Chem. 2010 Nov 5;75(21):7491-3. doi: 10.1021/jo101713d.

PMID:
20942493
7.

Highly enantioselective alpha-aminoxylation of aldehydes and ketones with a polymer-supported organocatalyst.

Font D, Bastero A, Sayalero S, Jimeno C, Pericàs MA.

Org Lett. 2007 May 10;9(10):1943-6. Epub 2007 Apr 17.

PMID:
17439136
8.

Enantioselective Michael reaction of α-alkyl-β-keto esters and enones under multifunctional catalysis.

Yang J, Li W, Jin Z, Liang X, Ye J.

Org Lett. 2010 Nov 19;12(22):5218-21. doi: 10.1021/ol102256v. Epub 2010 Oct 18.

PMID:
20954724
9.

Copper(I) catalyzed asymmetric 1,2-addition of Grignard reagents to α-methyl substituted α,β-unsaturated ketones.

Madduri AV, Minnaard AJ, Harutyunyan SR.

Chem Commun (Camb). 2012 Feb 1;48(10):1478-80. doi: 10.1039/c1cc16725a. Epub 2011 Nov 28.

PMID:
22124420
10.

Chiral Brønsted acid from a cationic gold(I) complex: catalytic enantioselective protonation of silyl enol ethers of ketones.

Cheon CH, Kanno O, Toste FD.

J Am Chem Soc. 2011 Aug 31;133(34):13248-51. doi: 10.1021/ja204331w. Epub 2011 Aug 4.

11.

Enantioselective synthesis of 3,4-dihydropyran derivatives via organocatalytic Michael reaction of α,β-unsaturated enones.

Liu Y, Liu X, Wang M, He P, Lin L, Feng X.

J Org Chem. 2012 Apr 20;77(8):4136-42. doi: 10.1021/jo3001047. Epub 2012 Mar 29.

PMID:
22432769
12.

Synthesis of cyclic enones via direct palladium-catalyzed aerobic dehydrogenation of ketones.

Diao T, Stahl SS.

J Am Chem Soc. 2011 Sep 21;133(37):14566-9. doi: 10.1021/ja206575j. Epub 2011 Aug 29.

13.

Organocatalytic asymmetric synthesis of 5-(trialkylsilyl)cyclohex-2-enones and the transformation into useful building blocks.

Bolze P, Dickmeiss G, Jørgensen KA.

Org Lett. 2008 Sep 4;10(17):3753-6. doi: 10.1021/ol801392d. Epub 2008 Jul 26.

PMID:
18656942
14.
15.

Highly enantioselective Michael addition of malonates to beta,gamma-unsaturated alpha-ketoesters catalyzed by chiral N,N'-dioxide-Yttrium(III) complexes with convenient procedure.

Zhou L, Lin L, Wang W, Ji J, Liu X, Feng X.

Chem Commun (Camb). 2010 May 28;46(20):3601-3. doi: 10.1039/c002208j. Epub 2010 Apr 8.

PMID:
20379595
16.

Catalytic asymmetric synthesis of sterically hindered tertiary α-aryl ketones.

Doran R, Guiry PJ.

J Org Chem. 2014 Oct 3;79(19):9112-24. doi: 10.1021/jo5014806. Epub 2014 Sep 18.

PMID:
25233274
17.

Enantioselective organocatalytic phospha-Michael reaction of alpha,beta-unsaturated ketones.

Wen S, Li P, Wu H, Yu F, Liang X, Ye J.

Chem Commun (Camb). 2010 Jul 14;46(26):4806-8. doi: 10.1039/c0cc00094a. Epub 2010 May 25.

PMID:
20502785
18.

Enantioselective Baeyer-Villiger oxidation: desymmetrization of meso cyclic ketones and kinetic resolution of racemic 2-arylcyclohexanones.

Zhou L, Liu X, Ji J, Zhang Y, Hu X, Lin L, Feng X.

J Am Chem Soc. 2012 Oct 17;134(41):17023-6. doi: 10.1021/ja309262f. Epub 2012 Oct 3. Erratum in: J Am Chem Soc. 2012 Dec 12;134(49):20208.

PMID:
23020516
19.

C-acylation of cyclopropanols: preparation of functionalized 1,4-diketones.

Parida BB, Das PP, Niocel M, Cha JK.

Org Lett. 2013 Apr 5;15(7):1780-3. doi: 10.1021/ol400666x. Epub 2013 Mar 25.

PMID:
23527827
20.

Asymmetric phase-transfer-catalyzed conjugate addition of glycine imine to exocyclic α,β-unsaturated ketones: construction of polycyclic imines containing three stereocenters.

Nie J, Hua MQ, Xiong HY, Zheng Y, Ma JA.

J Org Chem. 2012 May 4;77(9):4209-16. doi: 10.1021/jo300500r. Epub 2012 Apr 18.

PMID:
22500606
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