Cyclic Allenes Research Articles

Stereochemistry of allenic compounds. 3. Geometrical deformations of the propadiene unit in cyclic allenes

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereochemistry of allenic compounds. 3. Geometrical deformations of the propadiene unit in cyclic allenesJean Louis Luche, Jean Claude Damiano, and Claudine Cohen-AddadCite this: J. Am. Chem. Soc. 1980, 102, 16, 5370–5374Publication Date (Print):July 1, 1980Publication History Published online1 May 2002Published inissue 1 July 1980https://doi.org/10.1021/ja00536a042RIGHTS & PERMISSIONSArticle Views229Altmetric-Citations5LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (448 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts

Regiospecific Functionalization of Cyclic Allenes with Catecholeorane

Abstract Reaction of diborane1 and disiamylborane2 with cyclic allenes, resulted in the formation of a mixture of products resulting from the addition of boron at the central carbon as well as terminal carbon. Fish has reported that addition of 4, 4, 6-trimethyl-1, 3, 2-dioxaborinane to 1, 3-disubstituted allenes takes place at the central carbon atom preferentially when the hydroboration was done at 130° for 35–50 h in a sealed tube.3 The reactivity and stability of catecholborane at high temperatures which is known to provide greater stearic

An unusual new allene cyclization reaction. Synthesis of dihydrofuran-3(2H)-ones

An unusual new allene cyclization reaction. Synthesis of dihydrofuran-3(2H)-ones

ChemInform Abstract: DYNAMICS OF CYCLIC ALLENES. CONFORMATIONAL PROPERTIES OF 1,2‐CYCLONONADIENE, 1,2,6‐CYCLONONATRIENE, AND 1,2,6,7‐CYCLODECATETRAENE. DYNAMIC NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY AND ITERATIVE FORCE‐FIELD CALCULATIONS

Chemischer InformationsdienstVolume 9, Issue 7 Physical Organic Chemistry ChemInform Abstract: DYNAMICS OF CYCLIC ALLENES. CONFORMATIONAL PROPERTIES OF 1,2-CYCLONONADIENE, 1,2,6-CYCLONONATRIENE, AND 1,2,6,7-CYCLODECATETRAENE. DYNAMIC NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY AND ITERATIVE FORCE-FIELD CALCULATIONS F. A. L. ANET, F. A. L. ANETSearch for more papers by this authorI. YAVARI, I. YAVARISearch for more papers by this author F. A. L. ANET, F. A. L. ANETSearch for more papers by this authorI. YAVARI, I. YAVARISearch for more papers by this author First published: February 14, 1978 https://doi.org/10.1002/chin.197807078AboutPDF 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 No abstract is available for this article. Volume9, Issue7February 14, 1978 RelatedInformation

Cationic cyclization of allenes. Preferential cyclization via vinyl cations

Cationic cyclization of allenes. Preferential cyclization via vinyl cations

Bridged forms of carbenes and carbonium ions. Calculations by the CNDO/BW method

The first two structures represent cyclic methylacetylene, and the third cyclic allene. Since the energies of these structures were found to be extremely low (in particular, the energy of the last structure is close to the energy of methylacetylene), it is necessary to examine whether the energies of these bridged structures in the CNDO/BW approximation are too low, and if so by how much. For this verification, we took the simplest (and most extensively studied) systems of this type.

Dynamics of cyclic allenes. Conformational properties of 1,2-cyclononadiene, 1,2,6-cyclononatriene, and 1,2,6,7-cyclodecatetraene. Dynamic nuclear magnetic resonance spectroscopy and iterative force-field calculations

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of cyclic allenes. Conformational properties of 1,2-cyclononadiene, 1,2,6-cyclononatriene, and 1,2,6,7-cyclodecatetraene. Dynamic nuclear magnetic resonance spectroscopy and iterative force-field calculationsFrank A. L. Anet and Issa YavariCite this: J. Am. Chem. Soc. 1977, 99, 23, 7640–7649Publication Date (Print):November 1, 1977Publication History Published online1 May 2002Published inissue 1 November 1977https://doi.org/10.1021/ja00465a036RIGHTS & PERMISSIONSArticle Views118Altmetric-Citations24LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (882 KB) Get e-Alerts Get e-Alerts

ChemInform Abstract: ENE REACTIONS OF ALLENES. PART IV. REACTIONS OF A CYCLIC ALLENE WITH ELECTRON‐DEFICIENT ENOPHILES

Chemischer InformationsdienstVolume 8, Issue 43 Preparative Organic Chemistry ChemInform Abstract: ENE REACTIONS OF ALLENES. PART IV. REACTIONS OF A CYCLIC ALLENE WITH ELECTRON-DEFICIENT ENOPHILES C. B. LEE, C. B. LEESearch for more papers by this authorD. R. TAYLOR, D. R. TAYLORSearch for more papers by this author C. B. LEE, C. B. LEESearch for more papers by this authorD. R. TAYLOR, D. R. TAYLORSearch for more papers by this author First published: October 25, 1977 https://doi.org/10.1002/chin.197743108Read 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 onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume8, Issue43October 25, 1977 RelatedInformation

ChemInform Abstract: CYCLIC ALLENES. 2. THE CONVERSION OF CYCLOPROPYLIDENES TO ALLENES. A SIMPLEX‐INDO STUDY

Chemischer InformationsdienstVolume 8, Issue 27 Physical Organic Chemistry ChemInform Abstract: CYCLIC ALLENES. 2. THE CONVERSION OF CYCLOPROPYLIDENES TO ALLENES. A SIMPLEX-INDO STUDY P. W. DILLON, P. W. DILLONSearch for more papers by this authorG. R. UNDERWOOD, G. R. UNDERWOODSearch for more papers by this author P. W. DILLON, P. W. DILLONSearch for more papers by this authorG. R. UNDERWOOD, G. R. UNDERWOODSearch for more papers by this author First published: July 5, 1977 https://doi.org/10.1002/chin.197727066AboutPDF 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 No abstract is available for this article. Volume8, Issue27July 5, 1977 RelatedInformation

Dihydroboration of cyclic allenes

The study on the dihydroboration of a large ring cyclic allene, 1,2-cyclotridecadiene and the smallest stable allene, 1,2-cyclononadiene is described. For example, a mixture of products containing isomeric cyclotridecene, bicyclo(10.1.0)-tridecane, cyclotridecanone, cyclotridecanol, isomeric cyclic 1,2-cyclotridecandiol and isomeric 1,3-cyclotridecandiol is obtained from dihydroboration-oxidation of 1,2-cyclotridecadiene. However, dihydroboration-hydrolysis-oxidation of 1,2-cyclotridecadiene affords mainly cyclotridecanol, whereas dihydroboration-oxidation with chromium trioxide-pyridine yields mainly a mixture of Z- and E-cyclotridecene. Reasonable mechanistic pathways have been suggested for the formation of products. The proposed unusual elimination reaction of 1,2-diorganoboranes with chromium trioxide has been substantiated using an authentic 1,2-diorganoborane from diphenyl acetylene. The reaction appears to be stereospecific withthreo-diorganoborane furnishing predominantly E-alkene. The results with 1,2-cyclononadiene has also been rationalised on a similar basis.

Regio- and stereospecificity in the addition of hydrogen bromide to some cyclic allenes

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRegio- and stereospecificity in the addition of hydrogen bromide to some cyclic allenesS. N. Moorthy, A. Singh, and D. DevaprabhakaraCite this: J. Org. Chem. 1975, 40, 23, 3452–3453Publication Date (Print):November 1, 1975Publication History Published online1 May 2002Published inissue 1 November 1975https://doi.org/10.1021/jo00911a037RIGHTS & PERMISSIONSArticle Views57Altmetric-Citations8LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (319 KB) Get e-Alerts Get e-Alerts

1,2,4,6-Cyclooctatetraene, a new strained cyclic allene

1,2,4,6-Cyclooctatetraene, a new strained cyclic allene

Cyclic allenes. I. Electronic structure and probable deformation of the allene linkage when included in a ring. INDO-MO [intermediate neglect of differential overlap-molecular orbitial] study

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclic allenes. I. Electronic structure and probable deformation of the allene linkage when included in a ring. INDO-MO [intermediate neglect of differential overlap-molecular orbitial] studyPaul W. Dillon and Graham R. UnderwoodCite this: J. Am. Chem. Soc. 1974, 96, 3, 779–787Publication Date (Print):February 1, 1974Publication History Published online1 May 2002Published inissue 1 February 1974https://doi.org/10.1021/ja00810a023RIGHTS & PERMISSIONSArticle Views165Altmetric-Citations35LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (1 MB) Get e-Alerts Get e-Alerts

Platinum(0) complexes of short-lived cyclic allenes

Platinum(0) complexes of cyclonona-1,2-diene, cyclo-octa-1,2-diene, and cyclohepta-1,2-diene have been prepared; the co-ordinating ability of these allenes increases with decreasing ring size.

π-Complexes of some cyclic allenes with silver(I) and copper(I)

The cyclic allenes, 1,2,6-cyclononatriene, 1,2,6-cyclodecatriene and 1,2,6,-cyclodecatetraene form well-defined crystalline π-complexes with silver(I) nitrate and copper(I) chloride. The IR spectra of these complexes show two new bands between 1650 and 1900 cm −1 in place of the single allenic band around 1950 cm −1 present in the non-coordinated allenes.

Oxymercuration and demercuration of cyclic allenes

Oxymercuration and demercuration of cyclic allenes

On the stereochemistry and the mechanism of sodium-ammonia reduction of cyclic allenes

On the stereochemistry and the mechanism of sodium-ammonia reduction of cyclic allenes

Allene and cyclic allene pentamer complexes of rhodium(I)

Reaction of allene with [RhCl(C2H4)2]2 gave an air-stable yellow complex, RhCl(C3H4)5, in which a cyclic allene pentamer, 1,2,5,6,8-pentamethylenecyclodecane co-ordinates to the metal as a novel quadridentate olefinic ligand. I.r., 1H n.m.r., and mass spectra of the complex as well as reactions with hydrogen or with (Ph2PCH2)2 were examined to infer the structure. Allene monomer complexes, RhX(PPh3)2C3H4(X = Cl, Br, I) are prepared by the reaction of allene with RhX(PPh3)3.

Oxymercuration of cyclic allenes

Oxymercuration of cyclic allenes

Hydroboration of cyclic allenes with disiamylborane

It has been shown that 1,2-cyclononadiene and 1,2-cyclotridecadiene undergo 78 and 100% hydroboration respectively, with disiamylborane. 1,2-Cyclononadiene gave products which represented 83% attack of boron at the central carbon atom and 17% attack at the terminal carbon atom. 1,2-Cyclotridecadiene gave 62% central carbon attack and 38% terminal carbon attack. The reactivity and selectivity may be explained mainly in terms of steric effects on a four-centered transition state.