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DOI: 10.1055/s-2004-829072
Phenolic N-Oxide as a Highly Efficient Organocatalyst for Cyanosilylation of Ketones
Publication History
Publication Date:
29 June 2004 (online)
Abstract
The use of an inexpensive, easy to handle and readily available chemical, 5 mol% phenolic N-oxide, alone as a catalyst for cyanosilylation of ketones gave the corresponding products in 78-99% yield with reaction times of 0.5-16 hours.
Key words
catalysis - cyanohydrins - achiral N-oxides - ketones - organocatalysis
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References
General Procedure for Cyanosilylation of Ketones: To a mixture of ketone (0.5 mmol) and phenolic N-oxide (4.2 mg, 0.025 mmol) in Et2O (0.5 mL) was added trimethylsilyl cyanide (83 µL, 1.2 equiv) at r.t. The reaction was monitored by TLC, and after the reaction period described in Table [2] , the reaction mixture was concentrated under reduced pressure and purified by silica gel column chromatography with Et2O-petroleum ether (1:100, v/v) to give the pure product.