Silyl perbenzoates

Trimethylsilyl)ethanesu]fonamides are usually prepared by reaction of the amine with 2-(trimethy]silyl)ethanesulfonyl chloride in the presence of a suitable base. An improved large scale preparation of this reagent has been published in Organic Syntheses [Scheme 8.142] 319 In the first step sodium bisulfite is added to trimethyivinyJsilane in the presence of the catalytic amount of ten-butyl perbenzoate. The resulting crude sodium sulfonate is then treated with... 

With perbenzoic acid gives a mixture of about equal amounts of the cis- and froRf-epoxide. If the hydroxyl group is first silylated, then oxidation with m-Ohloroperbenzoic acid gives the trans-epoxy ether as the main product. ... 

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