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(16) 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 mL, 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.
Synlett 2004, No. 9, 1598–1600 © Thieme Stuttgart · New York