The condensation of phenols with nitrobenzaldehydes

Driver, John Edmund; Mok, S. F.

doi:10.1039/jr9550003914

Cited by 8 publications

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“…The synthesis of monomers 3A-D was accomplished in three steps from nitrobenzaldehyde or nitroacetophenone (Scheme 1). The synthesis of 2A or 2C was performed by the sulfuric acidcatalyzed condensation reaction of p-or m-nitrobenzaldehyde with phenol in cold acetic to give compound 1A or 1C, 31…”

Section: Resultsmentioning

confidence: 99%

“…The synthesis of monomers 3A − D was accomplished in three steps from nitrobenzaldehyde or nitroacetophenone (Scheme ). The synthesis of 2A or 2C was performed by the sulfuric acid-catalyzed condensation reaction of p- or m -nitrobenzaldehyde with phenol in cold acetic to give compound 1A or 1C , followed by the reaction of the nitro group of 1A or 1C with H 2 catalyzed by Pd/C. Condensation of p - or m -nitroacetophenone and excess phenol in the presence of a mixture of zinc chloride and hydrogen chloride at 60−70 °C afforded 1,1-bis(4-dihydroxyphenyl)-1-(4-nitrophenyl)ethane or 1,1-bis(4-dihydroxyphenyl)-1-(3-nitrophenyl)ethane ( 1B or 1D) in good yields.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and Characterization of Hyperbranched Aromatic Poly(ether imide)s

Li¹,

Li²,

Tong

et al. 2003

Macromolecules

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The four AB2 monomers, N-[3-or 4-bis(4-hydroxyphenyl)toluoyl]-4-chlorophthalimide and N-{3-or 4-[1,1-bis(4-hydroxyphenyl)]ethylphenyl}-4-chlorophthalimides, were prepared and used for synthesis of hyperbranched poly(ether imide)s bearing hydroxyl end groups. These hyperbranched poly-(ether imide)s had moderate molecular weights with broad distributions and showed glass-transition temperatures (T gs) between 177 and 230 °C. The thermogravimetric analytic measurement revealed the decomposition temperature at 5% weight-loss temperatures (Td 5% ) ranging from 240 to 281 °C. Analysis using 1 H NMR spectroscopy revealed the four types of hyperbranched poly(ether imide)s to have similar degrees of branching (ca. 60%). These polymers were modified by acylation or nucleophilic substitution reaction at the hydroxyl end groups. The conversion effectiveness depended on the type of modification reaction, modifier, and reaction conditions. The thermal stability and solubility of hyperbranched poly-(ether imide)s were improved by the modification of the end groups.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Hyperbranched Aromatic Poly(ether imide)s

Li¹,

Li²,

Tong

et al. 2003

Macromolecules

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4,4′‐Dihydroxy‐triphenylmethanverbindungen mit basischem Stickstoff als funktioneller Gruppe

Schultz

Schnekenburger

1959

Archiv der Pharmazie

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PhtUmaZieChinolin(2)-carbinol und Chinolin(2)-carbonsiure aus Chinolin( 2)-aldehyd 1,l g Chinolin(2)-aldehyd ergaben bei analoger Arbeitsweise: 0,33g Chinolin(2)-carbinol, das sind 60% d.Th. Aue wenig Benzol weiBe Nadeln, Smp. 65". 0,30 g Chinolin(2)-carbonsaure, das sind 50% d. Th., in weiBen Nadeln vom Smp. 156'. 2-Phenylchinolin(4)-carbinol und 2-Phenyl-cinchoninsiure &us 2-Phenylchinolin(4) -aldehydlo) Aus 0,69 g 2-Phenylchinolin(4)-aldehyd wurden in analoger Reaktion erhalten: 0,345 g 2-PhenyIchinolin(4)-carbinol, das sind 100% d. Th. Aus Methanol weiBe Kri-0,233 g 2-Phenylcinchoninsiiure, das sind 63% d. Th., vom Smp. 204". stalle vom Smp. 138". Anschrift: Prof. Dr. B. Zymalkowski, Pharmaz. Institut der Univ. Hamburg, Reinbek Bez. Hamburg. 1805. 0.-E. S c h u l t z und J. S c h n e k e n b u r g e r *) Herrn Prof. Dr. Rosenmund zum 75. Geburtstag gewidmet. l) 4. Mitteilung: 0. E . Schultz und J6rg Schnekenburger, Arch. Pharmaz. Ber. dtsch. pharmaz.

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Clathrat-Einschlußverbindungen

Vögtle

1992

Teubner Studienbücher Chemie

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The condensation of phenols with nitrobenzaldehydes

Abstract: Triphenylmethane derivatives have been isolated (some in high yield) from the products of condensation of phenols with 0-, m-, and 9-nitrobenzaldehydes. Many of them form molecular compounds with hydrocarbon solvents.

Cited by 8 publications

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Synthesis and Characterization of Hyperbranched Aromatic Poly(ether imide)s

Synthesis and Characterization of Hyperbranched Aromatic Poly(ether imide)s

4,4′‐Dihydroxy‐triphenylmethanverbindungen mit basischem Stickstoff als funktioneller Gruppe

Clathrat-Einschlußverbindungen

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