Abbau des Cyclo‐hexans zum Benzol

Willstätter, Richard; Hatt, Daniel

doi:10.1002/cber.19120450206

Cited by 24 publications

(2 citation statements)

References 7 publications

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“…This property of 1 : 3-cyciohexadiene has already been recorded. Harries (1912) gives the value MD= 26-85, and Willstatter (1912) the value Md = 26-79, as compared with our own value, MD = 26-84, and the calcu lated value, Md = 26-77. Zelinsky and Gorsky (1908) found similar refractivities for both 1 : 3-cyc£ohexadiene (II), and the 1 : 4-compound (VII), and they also recorded normal refractivity for the conjugated methyll-ct/dohexadiene-2 : 4 (VIII).…”

Section: Refractivesupporting

confidence: 52%

Refractive dispersion of organic compounds IX—Optical exaltation in unsaturated hydrocarbons containing conjugated double bonds

1937

Proc. R. Soc. Lond. A

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One of the ultimate aims of the present investigations of refractive dispersion is to elucidate the phenomenon of “optical exaltation” in organic compounds containing conjugated systems of alternate single and double bonds, as observed by Gladstone in 1881 and defined by Brühl in 1907. A first step was taken in Part IV (Allsopp 1934 a ) when dispersion curves were plotted over a wide range of wave-lengths for two compounds of the cyclohexane series, viz. cyclohexene (I), which contains a single olefinic double bond, and cyclohexadiene (II), with two conjugated olefinic double bonds:

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Section: Refractivesupporting

confidence: 52%

Refractive dispersion of organic compounds IX—Optical exaltation in unsaturated hydrocarbons containing conjugated double bonds

1937

Proc. R. Soc. Lond. A

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“…Since Willstätterspioneering synthesis of 1,3,5,7-cyclooctatetraene (C 8 H 8 ,C OT)m ore than 100 years ago, [1] 1,3,5,7cyclooctatetraene along with the cyclooctatetraenyl radical (C 8 H 7 )have received considerable attention from the physical organic, theoretical, and synthetic organometallic chemistry communities from af undamental point of view of electronic structure as ap rototype of exotic ring inversion-bond shifting isomerization [2,3] and as organic ligands. [4][5][6][7][8] COT represents ab enchmark of closed shell annulenes [9] -conjugated monocyclic hydrocarbons with the general molecular formula C n H n and n being an even number.…”

mentioning

confidence: 99%

Gas‐Phase Synthesis of the Elusive Cyclooctatetraenyl Radical (C₈H₇) via Triplet Aromatic Cyclooctatetraene (C₈H₈) and Non‐Aromatic Cyclooctatriene (C₈H₈) Intermediates

et al. 2017

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The 1,2,4,7-cyclooctatetraenyl radical (C H ) has been synthesized for the very first time via the bimolecular gas-phase reaction of ground-state carbon atoms with 1,3,5-cycloheptatriene (C H ) on the triplet surface under single-collision conditions. The barrier-less route to the cyclic 1,2,4,7-cyclooctatetraenyl radical accesses exotic reaction intermediates on the triplet surface, which cannot be synthesized via classical organic chemistry methods: the triplet non-aromatic 2,4,6-cyclooctatriene (C H ) and the triplet aromatic 1,3,5,7-cyclooctatetraene (C H ). Our approach provides a clean gas-phase synthesis of this hitherto elusive cyclic radical species 1,2,4,7-cyclooctatetraenyl via a single-collision event and opens up a versatile, unconventional path to access this previously largely obscure class of cyclooctatetraenyl radicals, which have been impossible to access through classical synthetic methods.

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The Synthesis of Acetylenes

Jacobs

2011

Organic Reactions

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Many advances have been made in recent years in the methods for the synthesis of acetylenes and many compounds are now rather readily available in the pure state. Acetylene was first prepared by Davy, who treated acetylide with water. Propyne, the first substituted acetylene was obtained in 1861. At the present time alkynes are usually synthesized by the alkylation of sodium acetylide or substituted metallic acetylides, often in liquid ammonia and 1‐Alkynes are also obtained by dehydrohalogenation of suitable halides with sodium amide or in certain cases by ethanolic alkali. The present discussion will be limited to methods for the creation of a carbon‐carbon triple bond and to the alkylation of metallic acetylides.

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Abbau des Cyclo‐hexans zum Benzol

Cited by 24 publications

References 7 publications

Refractive dispersion of organic compounds IX—Optical exaltation in unsaturated hydrocarbons containing conjugated double bonds

Refractive dispersion of organic compounds IX—Optical exaltation in unsaturated hydrocarbons containing conjugated double bonds

Gas‐Phase Synthesis of the Elusive Cyclooctatetraenyl Radical (C₈H₇) via Triplet Aromatic Cyclooctatetraene (C₈H₈) and Non‐Aromatic Cyclooctatriene (C₈H₈) Intermediates

The Synthesis of Acetylenes

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Abbau des Cyclo‐hexans zum Benzol

Cited by 24 publications

References 7 publications

Refractive dispersion of organic compounds IX—Optical exaltation in unsaturated hydrocarbons containing conjugated double bonds

Refractive dispersion of organic compounds IX—Optical exaltation in unsaturated hydrocarbons containing conjugated double bonds

Gas‐Phase Synthesis of the Elusive Cyclooctatetraenyl Radical (C8H7) via Triplet Aromatic Cyclooctatetraene (C8H8) and Non‐Aromatic Cyclooctatriene (C8H8) Intermediates

The Synthesis of Acetylenes

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Gas‐Phase Synthesis of the Elusive Cyclooctatetraenyl Radical (C₈H₇) via Triplet Aromatic Cyclooctatetraene (C₈H₈) and Non‐Aromatic Cyclooctatriene (C₈H₈) Intermediates