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Items: 1 to 20 of 142

1.

Diastereoselective reaction of sulfoxonium ylides, aldehydes and ketenes: an approach to trans-γ-lactones.

Mondal M, Ho HJ, Peraino NJ, Gary MA, Wheeler KA, Kerrigan NJ.

J Org Chem. 2013 May 3;78(9):4587-93. doi: 10.1021/jo4003213. Epub 2013 Apr 11.

PMID:
23548074
2.

Phosphine-catalyzed asymmetric synthesis of β-lactones from disubstituted ketenes and aldehydes.

Chen S, Mondal M, Ibrahim AA, Wheeler KA, Kerrigan NJ.

J Org Chem. 2014 Jun 6;79(11):4920-9. doi: 10.1021/jo500486e. Epub 2014 May 8.

PMID:
24810117
3.

Asymmetric synthesis of highly substituted beta-lactones by nucleophile-catalyzed [2+2] cycloadditions of disubstituted ketenes with aldehydes.

Wilson JE, Fu GC.

Angew Chem Int Ed Engl. 2004 Nov 26;43(46):6358-60. No abstract available.

PMID:
15558690
5.

Phosphine-catalyzed asymmetric synthesis of beta-lactones from arylketoketenes and aromatic aldehydes.

Mondal M, Ibrahim AA, Wheeler KA, Kerrigan NJ.

Org Lett. 2010 Apr 16;12(8):1664-7. doi: 10.1021/ol100075m.

PMID:
20337432
6.

Diastereoselective synthesis of γ-lactones through reaction of enediolates with α,β-unsaturated sulfoxonium salts.

Peraino NJ, Wheeler KA, Kerrigan NJ.

Org Lett. 2015 Apr 3;17(7):1735-7. doi: 10.1021/acs.orglett.5b00545. Epub 2015 Mar 18.

PMID:
25783172
7.
8.

Chiral N-heterocyclic carbene-catalyzed formal [4+2] cycloaddition of ketenes with enones: highly enantioselective synthesis of trans- and cis-delta-lactones.

Zhang YR, Lv H, Zhou D, Ye S.

Chemistry. 2008;14(28):8473-6. doi: 10.1002/chem.200801165. No abstract available.

PMID:
18688823
9.

BINAPHANE-catalyzed asymmetric synthesis of trans-β-lactams from disubstituted ketenes and N-tosyl arylimines.

Chen S, Salo EC, Wheeler KA, Kerrigan NJ.

Org Lett. 2012 Apr 6;14(7):1784-7. doi: 10.1021/ol3003783. Epub 2012 Mar 12.

PMID:
22409456
10.

Formal cycloaddition of disubstituted ketenes with 2-oxoaldehydes catalyzed by chiral N-heterocyclic carbenes.

He L, Lv H, Zhang YR, Ye S.

J Org Chem. 2008 Oct 17;73(20):8101-3. doi: 10.1021/jo801494f. Epub 2008 Sep 25.

PMID:
18816140
11.

Catalytic asymmetric heterodimerization of ketenes.

Ibrahim AA, Nalla D, Van Raaphorst M, Kerrigan NJ.

J Am Chem Soc. 2012 Feb 15;134(6):2942-5. doi: 10.1021/ja211678m. Epub 2012 Feb 3.

PMID:
22283567
12.

β-Lactones through catalytic asymmetric heterodimerization of ketenes.

Marqués-López E, Christmann M.

Angew Chem Int Ed Engl. 2012 Aug 27;51(35):8696-8. doi: 10.1002/anie.201204026. Epub 2012 Jul 24. No abstract available.

PMID:
22829444
13.

Josiphos-catalyzed asymmetric homodimerization of ketoketenes.

Ibrahim AA, Wei PH, Harzmann GD, Kerrigan NJ.

J Org Chem. 2010 Nov 19;75(22):7901-4. doi: 10.1021/jo101867m. Epub 2010 Oct 29.

PMID:
21033697
14.

Cinchona alkaloid-lewis acid catalyst systems for enantioselective ketene-aldehyde cycloadditions.

Zhu C, Shen X, Nelson SG.

J Am Chem Soc. 2004 May 5;126(17):5352-3.

PMID:
15113194
15.

Catalytic asymmetric couplings of ketenes with aldehydes to generate enol esters.

Schaefer C, Fu GC.

Angew Chem Int Ed Engl. 2005 Jul 18;44(29):4606-8. No abstract available.

PMID:
16003799
17.

Alpha-alkenoyl ketene S,S-acetal-based multicomponent reaction: an efficient approach for the selective construction of polyfunctionalized cyclohexanones.

Ma Y, Wang M, Li D, Bekturhun B, Liu J, Liu Q.

J Org Chem. 2009 Apr 17;74(8):3116-21. doi: 10.1021/jo900217g.

PMID:
19296593
18.

An Evans-Tishchenko-ring-closing metathesis approach to medium-ring lactones.

Aird JI, Hulme AN, White JW.

Org Lett. 2007 Feb 15;9(4):631-4. Epub 2007 Jan 27.

PMID:
17256949
19.

Enantioselective synthesis of beta-trifluoromethyl-beta-lactones via NHC-catalyzed ketene-ketone cycloaddition reactions.

Wang XN, Shao PL, Lv H, Ye S.

Org Lett. 2009 Sep 17;11(18):4029-31. doi: 10.1021/ol901290z.

PMID:
19681591
20.

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