Die Synthese von Derivaten des Hexadeuterobenzols

Rieker, Anton; Ziemek, Peter

doi:10.1515/znb-1965-0708

Cited by 15 publications

(3 citation statements)

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“…An esr signal for I was observed when 2,4,6-tri-ibutylmagnesium bromide was treated with oxygen or quiñones (232). The synthesis of hindered phenols and the corresponding phenoxy radicals which contain various isotopes has been described in several papers (86,87,231,273,277,279,281).…”

Section: Othersmentioning

confidence: 99%

The Chemistry of Stable Phenoxy Radicals

Altwicker¹

1967

Chem. Rev.

265

189

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are closely related to phenoxy radicals but have a unique structural feature in that they are radical anions, will be mentioned only briefly. The chemistry of semiquinones has been the subject of an earlier review paper (202; for recent references cf. 58, 208, 313). Stable radicals based on polynuclear phenols (such as naphthols etc.) will be discussed.Electron spin resonance spectroscopy has contributed more than any other tool to the structural analysis of phenoxys and to the characterization of many new radicals. The results from esr work will be introduced where pertinent, but a detailed discussion of the many spectra that have been published is considered beyond the scope of this review. Excellent summaries of the esr method (232,325) and its application to phenoxy radicals have appeared (44,205).The literature has been reviewed through September 1966; a number of later references are included. III. Generation of Phenoxy RadicalsA.

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Section: Othersmentioning

confidence: 99%

The Chemistry of Stable Phenoxy Radicals

Altwicker¹

1967

Chem. Rev.

265

189

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“…This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Indusirie. -Part 4: R. W. Saalfmnk, E. Ackermann, H. WinkIer, R anion, and the acceptor substituent (A) is replaced by a stabilized cation, then one obtains a dipolar carbene (2) which can also be regarded as allene (3). We have now found that such donor/acceptor-substituted allenes are likewise ambiphilic, i. e. can react at the central atom C2 both electrophilically as well as nucleophilically.…”

Section: E Niecke H Zorn B Krebs C Henkelmentioning

confidence: 93%

An Amino‐Protecting Group for Use in Peptide Synthesis Which Can Be Introduced Electrochemically

Khalifa

Jung

Rieker

1980

Angew. Chem. Int. Ed. Engl.

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“…Ambiphilic carbenes, e. g. chloro(methoxy)carbene, exhibit electrophilic and nucleophilic selectivity, respectively, towards electronrich and electron-deficient olefins"]. If the donor substituent (Do) in an ambiphilic carbene (2) is replaced by a stabilized [' I Univ.- 3) anion, and the acceptor substituent (A) is replaced by a stabilized cation, then one obtains a dipolar carbene (2) which can also be regarded as allene (3). We have now found that such donor/acceptor-substituted allenes are likewise ambiphilic, i. e. can react at the central atom C2 both electrophilically as well as nucleophilically.…”

Section: By Rolf W Saalfrank Winjiiied Paul and Heide Liebenow"'mentioning

confidence: 99%