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Showing 1 to 12 of 255 entries
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Ruthenium-Catalyzed Peri- and Ortho-Alkynylation with Bromoalkynes via Insertion and Elimination.

Organic letters

Tan E, Konovalov AI, Fernández GA, Dorel R, Echavarren AM.
PMID: 28976200
Org Lett. 2017 Oct 20;19(20):5561-5564. doi: 10.1021/acs.orglett.7b02655. Epub 2017 Oct 04.

The alkynylation of naphthols takes place with total regiocontrol at the peri position of the hydroxyl group in the presence of [RuCl

Correction: Phosphine-catalyzed Friedel-Crafts reaction of naphthols with para-quinone methides: expedient access to triarylmethanes.

Organic & biomolecular chemistry

Zhou T, Li S, Huang B, Li C, Zhao Y, Chen J, Chen A, Xiao Y, Liu L, Zhang J.
PMID: 28548151
Org Biomol Chem. 2017 Jun 14;15(23):5097. doi: 10.1039/c7ob90087b.

Correction for 'Phosphine-catalyzed Friedel-Crafts reaction of naphthols with para-quinone methides: expedient access to triarylmethanes' by Tao Zhou et al., Org. Biomol. Chem., 2017, DOI: 10.1039/c7ob00911a.

Asymmetric Dearomatization of β-Naphthols through a Bifunctional-Thiourea-Catalyzed Michael Reaction.

Angewandte Chemie (International ed. in English)

Wang SG, Liu XJ, Zhao QC, Zheng C, Wang SB, You SL.
PMID: 26463712
Angew Chem Int Ed Engl. 2015 Dec 01;54(49):14929-32. doi: 10.1002/anie.201507998. Epub 2015 Oct 14.

An intermolecular asymmetric dearomatization reaction of β-naphthols with nitroethylene through a chiral-thiourea-catalyzed Michael reaction is described. Enantioenriched functionalized β-naphthalenones with an all-carbon quaternary stereogenic center could thus be easily constructed from simple naphthol derivatives in good yields and excellent...

Synthesis of spiroindanes by palladium-catalyzed oxidative annulation of non- or weakly activated 1,3-dienes involving C-H functionalization.

Chemical communications (Cambridge, England)

Khan I, Chidipudi SR, Lam HW.
PMID: 25571940
Chem Commun (Camb). 2015 Feb 14;51(13):2613-6. doi: 10.1039/c4cc09496d.

The synthesis of spiroindanes by the palladium-catalyzed oxidative annulation of non- or weakly activated 1,3-dienes with 2-aryl cyclic 1,3-dicarbonyl compounds is described. Examples of the dearomatizing oxidative annulation of 1,3-dienes with 1-aryl-2-naphthols are also presented.

Transition-metal-catalyzed asymmetric allylic dearomatization reactions.

Accounts of chemical research

Zhuo CX, Zheng C, You SL.
PMID: 24940612
Acc Chem Res. 2014 Aug 19;47(8):2558-73. doi: 10.1021/ar500167f. Epub 2014 Jun 18.

Dearomatization reactions serve as powerful methods for the synthesis of highly functionalized, three-dimensional structures starting with simple planar aromatic compounds. Among processes of this type, catalytic asymmetric dearomatization (CADA) reactions are attractive owing to the large number of aromatic...

Mg(II) -Mediated Catalytic Asymmetric Dearomatization (CADA) Reaction of β-Naphthols with Dialkyl Acetylenedicarboxylates.

Chemistry (Weinheim an der Bergstrasse, Germany)

Wang L, Yang D, Li D, Wang P, Wang K, Wang J, Jiang X, Wang R.
PMID: 27139904
Chemistry. 2016 Jun 13;22(25):8483-7. doi: 10.1002/chem.201601399. Epub 2016 May 03.

A Mg(II) -mediated catalytic asymmetric dearomatization (CADA) reaction of β-naphthols has been developed. The reaction proceeds under ambient temperature and give a series of chiral trisubstituted olefins with good chemoselectivities, Z/E ratios, and excellent enantioselectivities. A fluorinated β-naphthol was...

Transfer of Chirality in the Rhodium-Catalyzed Chemoselective and Regioselective Allylic Alkylation of Hydroxyarenes with Vinyl Aziridines.

Organic letters

Lin TY, Wu HH, Feng JJ, Zhang J.
PMID: 28530815
Org Lett. 2017 Jun 02;19(11):2897-2900. doi: 10.1021/acs.orglett.7b01136. Epub 2017 May 22.

By taking advantage of chirality-transfer strategy, a chemo- and regioselective allylic alkylation of naphthols and phenols with vinylaziridines provides an atom-economic and efficient method for the synthesis of enantioenriched 2-vinyl-2-arylethylamine derivatives. Use of readily available starting materials, a broad...

Chiral N,N'-Dioxide-Scandium(III)-Catalyzed Asymmetric Dearomatization of 2-Naphthols through an Amination Reaction.

Chemistry (Weinheim an der Bergstrasse, Germany)

Lian X, Lin L, Wang G, Liu X, Feng X.
PMID: 26449515
Chemistry. 2015 Nov 23;21(48):17453-8. doi: 10.1002/chem.201503276. Epub 2015 Oct 09.

A catalytic asymmetric dearomatization of 2-naphthols with azodicarboxylates has been accomplished by using a N,N'-dioxide-scandium(III) complex as a chiral catalyst. A number of optically active β-naphthalenone compounds with a nitrogen-containing quaternary carbon stereocenter were obtained in up to 99...

Tandem Esterification/1,4-Addition-Type Friedel-Crafts Alkylation Reactions of Phenols/Naphthols with Olefinic Thioazlactones: Access to Functionalized 1,2-Dihydrobenzo[f]chromen-3-ones and 3,4-Dihydrochromen-2-ones.

The Journal of organic chemistry

Ziyaei Halimehjani A, Khoshdoun M.
PMID: 27310869
J Org Chem. 2016 Jul 01;81(13):5699-704. doi: 10.1021/acs.joc.6b00740. Epub 2016 Jun 23.

An efficient approach for the synthesis of novel alkyl 2,3-dihydro-3-oxo-1-aryl-1H-benzo[f]chromen-2-ylcarbamodithioates and alkyl 3,4-dihydro-2-oxo-4-aryl-2H-chromen-3-ylcarbamodithioates from 2-(alkylthio)thioazlactones (thioazlactones) and phenols or naphthols catalyzed by PTSA was developed. The reaction proceeds via a domino esterification/intramolecular 1,4-addition-type Friedel-Crafts alkylation reaction to afford interesting...

Air Oxidation of 2-Aryl-1-tetralones in Basic, Neutral, and Acidic Media: An Unprecedented Oxidative Aryl Migration to 2-Aryloxy-1-naphthols under Acidic Condition.

The Journal of organic chemistry

Ishikawa T, Hino K, Yoneda T, Murota M, Yamaguchi K, Watanabe T.
PMID: 11674642
J Org Chem. 1999 Jul 23;64(15):5691-5695. doi: 10.1021/jo9824854.

No abstract available.

Ruthenium-catalyzed cycloaddition of propargylic alcohols with phenol derivatives via allenylidene intermediates: catalytic use of the allenylidene ligand as the C(3) unit.

Journal of the American Chemical Society

Nishibayashi Y, Inada Y, Hidai M, Uemura S.
PMID: 12095324
J Am Chem Soc. 2002 Jul 10;124(27):7900-1. doi: 10.1021/ja026168x.

Novel ruthenium-catalyzed cycloaddition of propargylic alcohols with 2-naphthols and phenols bearing electron-donating groups via allenylidene intermediates has been developed to give the corresponding 1H-naphtho[2,1-b]pyrans and 4H-1-benzopyrans, respectively, in moderate to excellent yields with complete regioselectivity.

Catalytic Activities of CuSO(4)/Al(2)O(3) in Dehydrogenation of Arenes by Dioxygen.

The Journal of organic chemistry

Sakamoto T, Yonehara H, Pac C.
PMID: 11671703
J Org Chem. 1997 May 16;62(10):3194-3199. doi: 10.1021/jo961377j.

The oxidation reactions of hydroquinones, 2-naphthols, or 2,6-di-tert-butylphenol efficiently occurred by catalysis with alumina-supported copper(II) sulfate to give the corresponding benzoquinones, 1,1'-bi-2-naphthols, and 4,4'-diphenoquinone, respectively, in good yields. The synthetic potentiality of the catalytic reactions was demonstrated by easy...

Showing 1 to 12 of 255 entries