About Bases and Superbases | Zendy

Florence Mongin | Zendy; Raimondo Maggi | Zendy; Manfred Schlösser | Zendy

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About Bases and Superbases

Author(s) -

Florence Mongin,

Raimondo Maggi,

Manfred Schlösser

Publication year - 1996

Publication title -

chimia international journal for chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.387

H-Index - 55

eISSN - 2673-2424

pISSN - 0009-4293

DOI - 10.2533/chimia.1996.650

Subject(s) - chemistry , potassium , stoichiometry , selectivity , reactivity (psychology) , sodium , proton , superbase , butyllithium , inorganic chemistry , organic chemistry , medicinal chemistry , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics

Butyllithium requires activation in order to become capable of abstracting a proton from weakly acidic hydrocarbons like cyclopropanes, simple olefins, or arenes. The addition of a stoichiometric amount of potassium tert-butoxide is a most effective means of enhancing the rate of a hydrogen/metal exchange process. The superbasic alkyllithium/potassium alcoholate mixtures are endowed not only with an unsurpassed reactivity but also with a surprisingly high selectivity as evidenced by a series of optionally site-selective arene metalations.

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