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Items: 1 to 20 of 101

1.

Phosphine-Catalyzed (3+2) Annulation of Isoindigos with Allenes: Enantioselective Formation of Two Vicinal Quaternary Stereogenic Centers.

Chan WL, Tang X, Zhang F, Quek G, Mei GJ, Lu Y.

Angew Chem Int Ed Engl. 2019 May 6;58(19):6260-6264. doi: 10.1002/anie.201900758. Epub 2019 Feb 27.

PMID:
30746821
2.

A cinchona alkaloid catalyzed enantioselective sulfa-Michael/aldol cascade reaction of isoindigos: construction of chiral bispirooxindole tetrahydrothiophenes with vicinal quaternary spirocenters.

Gui YY, Yang J, Qi LW, Wang X, Tian F, Li XN, Peng L, Wang LX.

Org Biomol Chem. 2015 Jun 14;13(22):6371-9. doi: 10.1039/c5ob00774g.

PMID:
25974840
3.

Regio- and Diastereoselective Construction of Spirocyclopenteneoxindoles through Phosphine-Catalyzed [3 + 2] Annulation of Methyleneindolinone with Alkynoate Derivatives.

Zhang J, Cheng C, Wang D, Miao Z.

J Org Chem. 2017 Oct 6;82(19):10121-10128. doi: 10.1021/acs.joc.7b01582. Epub 2017 Sep 21.

PMID:
28898577
4.

Bifunctional-Phosphine-Catalyzed Sequential Annulations of Allenoates and Ketimines: Construction of Functionalized Poly-heterocycle Rings.

Li E, Jin H, Jia P, Dong X, Huang Y.

Angew Chem Int Ed Engl. 2016 Sep 12;55(38):11591-4. doi: 10.1002/anie.201605189. Epub 2016 Aug 16.

PMID:
27529614
5.

Catalytic enantioselective construction of quaternary stereocenters: assembly of key building blocks for the synthesis of biologically active molecules.

Liu Y, Han SJ, Liu WB, Stoltz BM.

Acc Chem Res. 2015 Mar 17;48(3):740-51. doi: 10.1021/ar5004658. Epub 2015 Feb 25.

6.
7.

Enantioselective Phosphine-Catalyzed Formal [4+4] Annulation of α,β-Unsaturated Imines and Allene Ketones: Construction of Eight-Membered Rings.

Ni H, Tang X, Zheng W, Yao W, Ullah N, Lu Y.

Angew Chem Int Ed Engl. 2017 Nov 6;56(45):14222-14226. doi: 10.1002/anie.201707183. Epub 2017 Oct 10.

PMID:
28816392
8.

Development of Synthetic Methodologies via Catalytic Enantioselective Synthesis of 3,3-Disubstituted Oxindoles.

Cao ZY, Zhou F, Zhou J.

Acc Chem Res. 2018 Jun 19;51(6):1443-1454. doi: 10.1021/acs.accounts.8b00097. Epub 2018 May 29.

PMID:
29808678
9.

Construction of adjacent spiro-quaternary and tertiary stereocenters through phosphine-catalyzed asymmetric [3+2] annulation of allenoates with alkylidene azlactones.

Wang D, Wei Y, Shi M.

Chem Commun (Camb). 2012 Mar 14;48(22):2764-6. doi: 10.1039/c2cc17709a. Epub 2012 Feb 6.

PMID:
22310936
10.

An NHC-catalyzed in situ activation strategy to β-functionalize saturated carboxylic acid: an enantioselective formal [3+2] annulation for spirocyclic oxindolo-γ-butyrolactones.

Xie Y, Yu C, Li T, Tu S, Yao C.

Chemistry. 2015 Mar 27;21(14):5355-9. doi: 10.1002/chem.201500345. Epub 2015 Feb 16.

PMID:
25689040
11.

Formal (4+1) Cycloaddition and Enantioselective Michael-Henry Cascade Reactions To Synthesize Spiro[4,5]decanes and Spirooxindole Polycycles.

Huang JR, Sohail M, Taniguchi T, Monde K, Tanaka F.

Angew Chem Int Ed Engl. 2017 May 15;56(21):5853-5857. doi: 10.1002/anie.201701049. Epub 2017 Apr 11.

PMID:
28397989
12.

Construction of Axially Chiral Compounds via Asymmetric Organocatalysis.

Wang YB, Tan B.

Acc Chem Res. 2018 Feb 20;51(2):534-547. doi: 10.1021/acs.accounts.7b00602. Epub 2018 Feb 8.

PMID:
29419282
13.

Ag/P-Stereogenic Phosphine-Catalyzed Enantioselective 1,3-Dipolar Cycloadditions: A Method to Optically Active Pyrrolidines.

Zhi M, Gan Z, Ma R, Cui H, Li EQ, Duan Z, Mathey F.

Org Lett. 2019 Apr 15. doi: 10.1021/acs.orglett.9b00926. [Epub ahead of print]

PMID:
30986074
14.

Sequential Phosphine-Catalyzed [4 + 2] Annulation of β'-Acetoxy Allenoates: Enantioselective Synthesis of 3-Ethynyl-Substituted Tetrahydroquinolines.

Zhang Q, Jin H, Feng J, Zhu Y, Jia P, Wu C, Huang Y.

Org Lett. 2019 Mar 1;21(5):1407-1411. doi: 10.1021/acs.orglett.9b00130. Epub 2019 Feb 19.

PMID:
30777759
15.
16.

Construction of Vicinal Quaternary Stereogenic Centers by Enantioselective Direct Mannich-Type Reaction Using a Chiral Bis(guanidino)iminophosphorane Catalyst.

Takeda T, Kondoh A, Terada M.

Angew Chem Int Ed Engl. 2016 Apr 4;55(15):4734-7. doi: 10.1002/anie.201601352. Epub 2016 Mar 8.

PMID:
26954063
17.

Well-Designed Phosphine-Urea Ligand for Highly Diastereo- and Enantioselective 1,3-Dipolar Cycloaddition of Methacrylonitrile: A Combined Experimental and Theoretical Study.

Xiong Y, Du Z, Chen H, Yang Z, Tan Q, Zhang C, Zhu L, Lan Y, Zhang M.

J Am Chem Soc. 2019 Jan 16;141(2):961-971. doi: 10.1021/jacs.8b10939. Epub 2018 Dec 31.

PMID:
30543293
18.

Regio- and Enantioselective Rhodium-Catalyzed Addition of 1,3-Diketones to Allenes: Construction of Asymmetric Tertiary and Quaternary All Carbon Centers.

Beck TM, Breit B.

Angew Chem Int Ed Engl. 2017 Feb 6;56(7):1903-1907. doi: 10.1002/anie.201610577. Epub 2017 Jan 11.

PMID:
28075513
19.

Enantioselective Synthesis of Tetrahydropyridines/Piperidines via Stepwise [4 + 2]/[2 + 2] Cyclizations.

Wang Z, Xu H, Su Q, Hu P, Shao PL, He Y, Lu Y.

Org Lett. 2017 Jun 16;19(12):3111-3114. doi: 10.1021/acs.orglett.7b01221. Epub 2017 May 31.

PMID:
28560873
20.

Enantioselective Synthesis of Spirocyclohexadienones by NHC-Catalyzed Formal [3+3] Annulation Reaction of Enals.

Yetra SR, Mondal S, Mukherjee S, Gonnade RG, Biju AT.

Angew Chem Int Ed Engl. 2016 Jan 4;55(1):268-72. doi: 10.1002/anie.201507802. Epub 2015 Oct 21.

PMID:
26487242

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