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New PDF release: Arene chemistry : reaction mechanisms and methods for

By Jacques Mortier

ISBN-10: 1118752015

ISBN-13: 9781118752012

ISBN-10: 1118754956

ISBN-13: 9781118754955

ISBN-10: 1118754980

ISBN-13: 9781118754986

Prepared to permit scholars and artificial chemists to appreciate and extend on fragrant reactions coated in starting place classes, the publication deals a radical and available mechanistic rationalization of fragrant reactions regarding arene compounds.

•    Surveys tools used for getting ready arene compounds and their transformations
•    Connects reactivity and method with mechanism
•    Helps readers practice fragrant reactions in a pragmatic context by means of designing syntheses
•    Provides crucial information regarding options used to figure out response mechanisms

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Additional info for Arene chemistry : reaction mechanisms and methods for aromatic compounds

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HF─BF3) are employed to favor the meta isomer and shape‐selective zeolites are used to favor the para isomer (the isomer with the smallest cross‐sectional area). 25). 25 Isomerization of p‐xylene to m‐xylene. The chemistry of the σ‐complex is also important in transalkylations and related reactions. For example, monoalkylbenzenes undergo disproportionation reactions by transalkylation, which in the case of cumene provides diisopropylbenzene and benzene (Eq. 12) [75]. In this case, cumene serves as a nucleophile, while the isopropyl cation is the likely electrophile.

In the nitration, both π‐complex (63) and σ‐complex (64) are located at energy minima. The π‐ complex is located 25 kcal/mol below the starting materials, and it is characterized by a significant degree of bending of the nitronium ion and donor–acceptor bonding above the rim of the benzene ring. Despite the obvious transfer of π‐electron density toward NO2+, there is little distortion of the C─H bond angle. Formation of the σ‐complex (64, −27 kcal/mol) is followed by rearomatization and product formation.

Van Lente, M. , Fobare, W. F. (1980) J. Org. , 45, 2570. [17] Chow, Y. L. (1980) Reactive Intermediates, vol. :Abramovitch, R.  151. , Murashima, T. (1994) J. Chem. Soc.

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Arene chemistry : reaction mechanisms and methods for aromatic compounds by Jacques Mortier


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