A solid base
نویسندگان
چکیده
منابع مشابه
A solid base for decisions
To gain insight into the use of the VSNU research quality evaluations (since 1993) in the practice of research and of institutional management in Dutch universities, interviews were held in eight cases evaluated in the first year of this procedure. The main conclusions are that use of these research evaluations is universal, both ‘instrumentally’ (in decisions directly based on the judgements) ...
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Silica-bonded N-propyldiethylenetriamine (7) is employed as a recyclable heterogeneous solid base catalyst for the synthesis of 2-amino-3,5-dicarbonitrile-6-thiopyridines through pseudo four-component condensation reaction between aromatic aldehydes, malononitrile, and 2-amino-thiophenol in refluxing ethanol. Silica-bonded N-propyldiethylenetriamine showed much the same efficiency when used in ...
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The cycloalkylation of diethyl malonate and ethyl cyanoacetate with alkyl dihalide was investigated by using comminuted potassium carbonate as a base and toluene as a solvent in the presence of hexadecyltrimethylammonium bromide (HTMAB) as a phase-transfer catalyst, which provided a conventional procedure with the advantage of short reaction period and high product yield. The factors influencin...
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Nitrogen-containing carbon nanotubes (NCNT) are effective re-usable solid base catalysts, their activity for a Knoevenagel condensation being related to the amount of pyridinic nitrogen incorporated in the NCNT structure, which could be tuned by the synthesis parameters of the catalyst.
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ژورنال
عنوان ژورنال: Nature Materials
سال: 2015
ISSN: 1476-1122,1476-4660
DOI: 10.1038/nmat4440