منابع مشابه
Recent progress in Lewis acid–Lewis base bifunctional asymmetric catalysis*
Two enantioselective cyanation reactions, the Strecker reaction of ketoimines and the Reissert reaction of pyridine derivatives, promoted by Lewis acid–Lewis base bifunctional asymmetric catalysts are described.
متن کامل1 Lewis Acid – Brønsted Base Catalysis
From the synthetic point of view, organic synthesis via catalytic processes offers many benefits. Catalysis frequently obviates the excessive use of the activating reagents and associated tedious purification processes, thereby offering more environmentally benign synthetic processes. Furthermore, the specific activation mode of a catalyst allows for highly chemoselective transformations that a...
متن کاملThe Relevance of Lewis Acid-base Chemistry to Surface Interactions
This overview paper summarizes the current status of the Lewis acid-base or generalized donor-acceptor concepts and their application to solubility theory and related problems in the fields of surface and colloid chemistry. Simple second-order perturbation theory is then used to evaluate the pros and cons of various empirical treatments or Lewis acid-base strengths currently found in the litera...
متن کاملThe Lewis Acid-Base Definitions: A Status Report
This is not so much a proper review, in the sense of being a detailed survey of current experimental work, as it is a retrospective essay on the current status of the Lewis acid-base definitions as a systematizing tool in chemistry. Indeed, as the main concern is with the nature of the Lewis definitions themselves, their range of application, their limitations, the clarification of interpretive...
متن کاملLewis acid–base interactions enhance explosives sensing in silacycle polymers
The high sensitivity of silole- and silafluorene-containing polymers for detecting organic nitro, nitrate, and nitramine explosives cannot be solely attributed to favorable analyte-polymer hydrophobic interactions and amplified fluorescence quenching due to delocalization along the polymer chain. The Lewis acidity of silicon in conjugated poly(silafluorene-vinylene)s is shown to be important. T...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1982
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed059pa179.2