A-Mesyloxylation

The equivalent reagent for a-mesyloxylation has been reported. Again yields are high but little or no regioselectivity was observed. The question of stereoselection was not addressed. Most recently an analogous reagent for generating the a-ketophosphate has been reported. ... 

Kronenthal, D. R. Mueller, R. H. Kuester, P. L. Kissick, T. P. Johnson, E. J., Stereospecific Friedel-Crafts Alkylation of Benzene with 4-Mesyloxyl-L-Prolines. A New Synthesis of 4-Phenylprolines Tetrahedron Lett. 1990, 31, 1241. 

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