- Isomerization of 7-oxabenzonorbornadienes into naphthols catalyzed by [RuCl2(CO)3]2
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(Chemical Equation Presented) Ruthenium-catalyzed isomerization of 7-oxanorbornadienes into naphthols was investigated. Among the various ruthenium catalysts tested, [RuCl2(CO)3]2 gave the highest yields in the isomerizati
- Ballantine, Melissa,Menard, Michelle L.,Tam, William
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supporting information; experimental part
p. 7570 - 7573
(2009/12/28)
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- A nickel catalyst for the addition of organoboronate esters to ketones and aldehydes
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A Ni(cod)2/IPr catalyst promotes the intermolecular 1,2-addition of arylboronate esters to unactivated aldehydes and ketones. Dlaryl, alkyl aryl, and dialkyl ketones show good reactivity under mild reaction conditions (3) with aryl ether substrates. A Ni(0)/Ni(II) catalytic cycle initiated by the oxidative cyclization of the carbonyl substrate Is proposed.
- Bouffard, Jean,Itami, Kenichiro
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supporting information; scheme or table
p. 4410 - 4413
(2009/12/26)
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- An efficient method for demethylation of aryl methyl ethers
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A new efficient method for demethylation of aryl methyl ethers using iodocyclohexane in DMF under reflux condition is described.
- Zuo, Li,Yao, Shanyan,Wang, Wei,Duan, Wenhu
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p. 4054 - 4056
(2008/09/20)
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- Regioselective Monomethylation of Unsymmetrical Naphthalenediols with Methanolic HCl
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Treatment of naphthalene-1,3-diol and naphthalene-1,7-diol with methanol containing dry hydrogen chloride at room temperature gives exclusively 3-methoxy-1-naphthol and 7-methoxy-1-naphthol, respectively.Of the other two unsymmetrical naphthalenediols, the 1,2-isomer was unreactive and the 1,6-isomer gave a mixture of regioisomers under the same conditions.Two symmetrical diols (the 1,5- and 2,7-isomers) examined by the same procedure gave the monomethyl ethers in 60-70percent yields.
- Bell, Kevin H.,McCaffery, Leslie F.
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p. 731 - 737
(2007/10/02)
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- HALOGENATION REGIOSELECTIVE EN SERIE AROMATIQUE-II CHLORATION DES NAPHTOLS ET LEURS ETHERS A L'AIDE DE REACTIFS METTANT EN JEU DES INTERACTIONS DU TYPE DONNEUR-ACCEPTEUR
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The regispecific chlorination of naphtols by hexachlorocyclohexadienones as selective chlorinating reagents is described.The selectivity attained is better than that which we have obtained with phenol derivatives and confirms the importance of the donor-acceptor interaction between the reagent and the naphthol during the chlorination.
- Guy, Alain,Lemaire, Marc,Guette, Jean-Paul
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p. 2347 - 2354
(2007/10/02)
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- PHOTO FRIES REARRANGEMENTS OF 1-NAPHTHYL ESTERS IN THE SYNTHESIS OF 2-ACYLNAPHTHOQUINONES
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The photo Fries rearrangements of esters of 1-naphthol and 5-methoxy-1-naphthol to the corresponding 1-hydroxy-2-acylnaphthalenes have been carried out.The best yield (70percent) was obtained by irradiating 5-methoxy-1-naphthyl acetate in ethyl acetate.By contrast the yield from 1-naphthyl acetate under similar conditions was 40percent.Oxidation of 1-hydroxy-5-methoxy-2-naphthyl cyclohexyl ketone with thallium trinitrate gave the corresponding 1,4-quinone.These results provide a method for the regioselective synthesis of tricyclic analogues of adriamycinone.
- Crouse, David J.,Hurlbut, Sheri L.,Wheeler, Desmond M.S.
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p. 374 - 378
(2007/10/02)
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