Zur Struktur der Fulvene, IV. Darstellung und Eigenschaften von Benzofulvenen

Kresze, G.; Henkel, H.; Goetz, Horst

doi:10.1002/jlac.19646740104

Cited by 13 publications

(9 citation statements)

References 12 publications

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“…A series of o-arylbenzofulvene were synthesized by a condensation of indene with p-substituted benzaldehyde. 16 To a stirred suspension of idene (0.10 mol) and KOH (0.05 mol) in 100 cm3 of methanol was added psubstituted benzaldehyde (0.10 mol) at 0 "C, and stirred at room temperature overnight. The precipitate was filtered and recrystallized.…”

Section: Synthesis Of A-arylbenzofulvenementioning

confidence: 99%

Micro- and macro-scopic second-order non-linear optical properties of fulvene compounds

Kondo¹,

Goda²,

Takemoto³

et al. 1992

J. Mater. Chem.

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A number of fulvene compounds, which can polarize to give rise to intramolecular charge transfer (ICT), have been synthesized, and the second-order molecular hyperpolarizability (p) and dipole moment (,uJ have been calculated by using the MOPAC program. The macroscopic non-linearity (second-harmonic generation; SHG) evaluated by the Kurtz powder method is discussed in relation to microscopic p and pg. The large p and the small p g are characteristic of these compounds and contribute to the SHG activity. Among these compounds, co-(pmethoxypheny1)benzofulvene (MPBF) was found to exhibit large SHG activity and could be grown into large crystals. X-Ray diffraction analysis of MPBF shows non-centrosymmetrically cylindrical packing along the b-axis. The effective non-linear optical coefficient d,, of MPBF, which was evaluated from the bulk crystal cut to the phase-matching direction, corresponds to the value (7.0 pm V-') of potassium titanylphosphate (KTP), although the hardness is low (24 Vickers hardness).

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Section: Synthesis Of A-arylbenzofulvenementioning

confidence: 99%

Micro- and macro-scopic second-order non-linear optical properties of fulvene compounds

Kondo¹,

Goda²,

Takemoto³

et al. 1992

J. Mater. Chem.

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“…The optimal conformations of several molecules are given as an example. In Tables 1-4, the known experimental values of standard heats of formation ( H f ) [26,[41][42][43][44][45][46], entropies (S) [26], ionization potentials (I) [47][48][49][50][51][52][53][54], and molecular dipole moments () [29][30][31][32][33][34][35][36][37][38][39][40][55][56][57][58][59][60][61] of pyridine and its derivatives are systematized, and also the computed values are presented.…”

Section: Resultsmentioning

confidence: 99%

“…To clarify the questions related to the conformational state of molecular systems, we came up against the necessity of analyzing a series of works ( [28][29][30][31][32][33][34][35][36][37][38][39][40] and others). Once we have decided upon the use of quantum chemical methods to perform the conformational analysis, the bulk of research could be multiplied many times.…”

Section: Resultsmentioning

confidence: 99%

Quantitative structure–property relationships in the pyridine series

Pankratov¹

2002

Heteroatom Chemistry

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“…It has long been known that indene or fluorene can be added to aldehydes, mainly aromatic aldehydes in the presence of a basic catalyst like potassium hydroxide (10,11), sodium hydroxide (12,13), KF-Al 2 O 6 (14), or benzyltrimethylammonium hydroxide (triton B) (11).…”

Section: Chain Reactions Initiated By Electrochemical Reduction Of Armentioning

confidence: 99%

Addition of cyclopentadiene derivatives on aromatic aldehydes or nitrosobenzene initiated by electrochemical reduction

Williot¹,

Bernard²,

Lucas³

et al. 1999

Can. J. Chem.

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The electrochemical reduction of nitrosobenzene (PhNO) in the presence of cyclopentadiene derivatives containing the indenyl group represented as In′H 2 (10a, 10b, and 12b) gives the imine derivatives PhN=In′. The process requires only a catalytic amount of electricity. When the electrolysis of aromatic aldehydes (ArCHO), 2,6dichlorobenzaldehyde (1a), benzaldehyde (1b) and terephthalaldehyde (2), is performed in the presence of the In′H 2 derivatives, compounds ArCH=In′ are obtained in low yields. These compounds have been characterized by mass spectrometry and microanalysis. The overall process involves two consecutive chain reactions with regeneration of the anion In′H -.Résumé : La réduction électrochimique du nitrosobenzène (PhNO) en présence de dérivés du cyclopentadiène contenant le groupe indényle symbolisé par In′H 2 (10a, 10b, and 12b) conduit à des dérivés de type imine, ArN=In′. Le processus ne requiert qu'une quantité catalytique d'électricité. Lorsque l'électrolyse d'aldéhydes aromatiques (ArCHO) comme le 2,6-dichlorobenzaldéhyde (1a), le benzaldéhyde (1b) et le téréphtalaldéhyde (2) est réalisée en présence des dérivés In′H 2 , les composés ArCH=In′ sont obtenus en faible rendement. Ces derniers composés ont été caractérisés par spectrométrie de masse et microanalyse. Le processus global implique deux réactions en chaîne avec régénération de l'anion InH -.

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Zur Struktur der Fulvene, IV. Darstellung und Eigenschaften von Benzofulvenen

Abstract: Darstellung, Depolmomente und UV‐Spektren einer Reihe von Benzofulvenen werden beschrieben. Der Substituenteneinfluß auf Eigenschaften und Struktur der Verbindungen wird diskutiert.

Cited by 13 publications

References 12 publications

Micro- and macro-scopic second-order non-linear optical properties of fulvene compounds

Micro- and macro-scopic second-order non-linear optical properties of fulvene compounds

Quantitative structure–property relationships in the pyridine series

Addition of cyclopentadiene derivatives on aromatic aldehydes or nitrosobenzene initiated by electrochemical reduction

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