Indene Research Articles

Inductive limits of vector-valued sequence spaces

Let L be a normal Banach sequence space such that every element in L is the limit of its sections and let E = ind En be a separated inductive limit of the locally convex spaces. Then ind L(En) is a topological subspace of L(E).

An Unusual Photochemical Reaction of Indene with Furan and Thiophene Derivatives

Addition photochimique d'indene sur le iodo-5 furfural, des iodo- et diodothiophenecarbaldehydes-2 et des acetyl-2 iodo thiophenes

NOCH EINMAL: DIE FIGUR BERTRAND IN DEN SCHLAFWANDLERN

German Life and LettersVolume 40, Issue 3 p. 177-185 NOCH EINMAL: DIE FIGUR BERTRAND IN DEN SCHLAFWANDLERN Sigrid Schmid-Bortenschlager, Sigrid Schmid-BortenschlagerSearch for more papers by this author Sigrid Schmid-Bortenschlager, Sigrid Schmid-BortenschlagerSearch for more papers by this author First published: April 1987 https://doi.org/10.1111/j.1468-0483.1987.tb00900.xCitations: 1Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume40, Issue3April 1987Pages 177-185 RelatedInformation

The Dimerization of a 4-Hydroxyindenone

Treatment of the indenone (4) with acid gives a dimer similar to those obtained from related indenes. The behaviour of the dimer with acid and base is described.

The dimerisation of some 4-hydroxyindenes

The acid-catalysed dimerisation of the indenes (1)–(5), has been studied and a number of products isolated. The structure and stereochemistry of these compounds has been established by the use of crossed dimers, 13C-labelling, and 1H and 13C n.m.r. spectroscopy.

Electroinitiated copolymerizations involving indene, styrene, and substituted styrenes

Copolymerisation par electrolyses a potentiel constant. Effets du potentiel et de la temperature sur les reactions de copolymerisation

Cationic cyclocodimerization. 2. Syntheses of [3.3](1,4)naphthalenophane and [3.3]paracyclo(1,4)naphthalenophane derivatives

1,3-bis(4-vinylnaphthyl)propane and 1-(4-vinylnaphthyl)-3-( p -vinylphenyl)propane, were cyclocodimerized with indene to afford indenyl-substituted [3.3](1,4)naphthalenophanes and [3.3]paracyclo(1,4)naphthalenophanes.

ChemInform Abstract: 9,10‐DICYANOANTHRACENE‐SENSITIZED TWO‐ELECTRON OXIDATION OF PHENYLCYCLOPROPANE AND AROMATIC OLEFINS IN THE PRESENCE OF COPPER(II) ION

AbstractDurch Photooxidation mit dem Sensibilisator‐System aus (III) und (IV) werden aus Phenylcyclopropan (I), Styrol (VI) bzw. Inden (VIII) die Bis‐ether (V), (VII) bzw. (IX) erhalten.

9,10-DICYANOANTHRACENE-SENSITIZED TWO-ELECTRON OXIDATION OF PHENYLCYCLOPROPANE AND AROMATIC OLEFINS IN THE PRESENCE OF COPPER(II) ION

Abstract The photooxidation of phenylcyclopropane, styrene, and indene using 9,10-dicyanoanthracene-Cu(BF4)2 sensitizer system in acetonitrile-alcohol(3:1) solutions affords the corresponding 1,3-dialkoxy and 1,2-dialkoxy compounds.

DER NAME DER JUDEN IN DEN ALTGERMANISCHEN SPRACHEN

German Life and LettersVolume 35, Issue 4 p. 296-314 DER NAME DER JUDEN IN DEN ALTGERMANISCHEN SPRACHEN Von Dietrich Hofmann, Von Dietrich HofmannSearch for more papers by this author Von Dietrich Hofmann, Von Dietrich HofmannSearch for more papers by this author First published: July 1982 https://doi.org/10.1111/j.1468-0483.1982.tb00263.xCitations: 3AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume35, Issue4July 1982Pages 296-314 RelatedInformation

The Spontaneous Copolymerization of Indene with Polar Vinyl Monomers in the Presence of Zinc Chloride

Abstract Indene (ID) was found to copolymerize spontaneously with polar vinyl monomers containing a nitrile or ester group in the presence of ZnCb and to give rise simultaneously to its cationic homopolymer in the latter comonomer. The formation of a 1:1-charge transfer complex between ID with acrylonitrile coordi-nated to ZnCl2 ((AN)c) was confirmed by UV-spectroscopic studies and the equilibrium constant for it was estimated to be 0.121 L/mol in AN at 25°C. The overall activation energy for the copolymerization with (AN)c was obtained to be ∼9.8 kcal/mol. An increasing amount of ZnCl2 in AN resulted in increases in the copolymerization rate, viscosity, and alternating tendency of the copolymer. The addition of 1, 1-diphenyl-2-picrylhydrazyl to the System ID-(AN)c retarded the copolymerization and induced a cationic polymerization of ID. Further, terpolymers containing ∼50 mol % AN were formed spontaneously in the System ID-styrene-(AN)c. Comparing these results with the corresponding ones obtained for 1...

Acidities of indene and phenyl-, diphenyl-, and triphenylindenes

Acidities of indene and phenyl-, diphenyl-, and triphenylindenes

Asymmetric induction radical copolymerization of optically active l‐menthyl vinyl ether with vinylene carbonate and indene

AbstractThe copolymerizations of l‐menthyl vinyl ether (l‐MVE) with the monomers vinylene carbonate (VCA) and indene (IN) were carried out in benzene with azobisisobutyronitrile (AIBN) as an initiator to obtain optically active copolymers. The optically active l‐menthyl residue from the copolymer main chain was removed using dry hydrogen bromide gas. After the ether cleavage reaction, the copolymers prepared (VA–VCA and VA–IN) were still optically active, and hence it was found that asymmetric induction had taken place in the copolymer main chain. The optical rotatory dispersion (ORD) and circular dichroism (CD) data of the original and ether‐cloven copolymers were also determined.

The effect of solvents on asymmetric induction cationic copolymerization of l‐menthyl vinyl ether with indene

AbstractCationic copolymerization of l‐menthyl vinyl ether (l‐MVE) with indene (IN) was carried out in several solvents with BF3OEt2 as catalyst at 0°C. The solvents used in this study were selected toluene (Tol), chloroform (CHCl3), chlorobenzene (BzCl), 1,2‐dichloroethane (EtCl2), and nitrobenzene; (BzNO2)/Tol = 65/35 mixture solvent. l‐Methyl residue, which is an optically active side chain of copolymer produced by cationic copolymerization, was removed with dry hydrogen bromide gas by ether cleavage reaction. The copolymer [vinyl alcohol(VA)–lN], produced by the ether cleavage reaction, also showed optical rotation. From this result, therefore, it was concluded that asymmetric induction takes place in the copolymer main chain. The efficiency of asymmetric induction was determined by the measurement of optical rotation of VA–IN copolymer after the ether cleavage reaction. The efficiency of asymmetric induction in the copolymer main chain developed from the variation on polymerization solvents; the order was Tol > EtCl2 > BzCl > CHCl3 > BzNO2/Tol (65/35) mixture solvent.

Effect of catalysts on asymmetric induction cationic copolymerization of l‐menthyl vinyl ether with indene

AbstractCationic copolymerization of l‐menthyl vinyl ether (l‐MVE) with indene (IN) was carried out with several catalysts in toluene (Tol) at 0°C. The catalysts used were BF3OEt2, CH3COClO4, and SnCl4. l‐Menthyl residue, an optically active side chain of the copolymer obtained, was removed with dry hydrogen bromide gas by the ether cleavage reaction. Ether‐cloven copolymers [vinyl alcohol(VA)–IN] also had optical rotation. The efficiency of asymmetric induction to the polymer main chain was in the order of BF3OEt2 > CH3COClO4 > SnCl4.

Diindene (indene dimer): a triboluminescent compound

Diindene (indene dimer): a triboluminescent compound

Asymmetric induction copolymerization. Cationic copolymerization of l‐menthyl vinyl ether with indene and acenaphthylene

Abstractl‐Menthyl vinyl ether (l‐MVE) was homopolymerized and copolymerized with the monomers indene (IN) and acenaphthylene (ANp) by BF3OEt2 as a catalyst. The chiral menthyl substituent was cloven from the homopolymers and copolymers using dry‐hydrogen bromide gas. After the removal of optically active menthyl group, poly(vinyl alcohol) (PVA) from l‐MVE homopolymer was optically inactive, and copolymers (VA‐IN, VA‐ANp) from l‐MVE‐IN and l‐MVE‐ANp copolymers were still optically active. Hence, in the case of l‐MVE homopolymer, it was concluded that asymmetric induction in the polymer main chain can only produce pseudoasymmetry. In the case of l‐MVE‐IN and l‐MVE‐ANp copolymers, it was found that asymmetric induction proceeded in the copolymer main chain and was caused by the influence of chiral menthyl group.

Kinetic Features and Mechanism of Alternating Copolymerization of lndene with Maleic Anhydride

Abstract The radical copolymerization of indene (IN) with maleic anhydride (MA) was investigated. The charge-transfer complexes (CT complexes) between comonomers were studied by means of spectrophotometric measurements. It was found that the maximum copolymerization rate occurred at a comonomer feed ratio that did not correspond to the composition of the CT complex and the composition of copolymer. It was shown that rate maximum was displaced towards an excess of IN in the solvents with strong donicity. The Acceptor Number of solvent influences neither the initial rate nor the position of the rate maximum. Some kinetic calculations were made to assess values of the cross-propagation rate constants and to elucidate the mechanism of propagation of macromolecular chains.

The role of 1,2-epoxyindene in the metabolism of indene in vivo [proceedings

The role of 1,2-epoxyindene in the metabolism of indene in vivo [proceedings

Enolate route to 5,10-disubstituted indeno[2,1-a]indene

Enolate route to 5,10-disubstituted indeno[2,1-a]indene