T. Nakamura et al., NEW METHOD FOR THE PREPARATION OF ALKOXYCARBENE COMPLEXES OF CHROMIUM, MOLYBDENUM, AND TUNGSTEN USING SULFONIUM SALTS, Chemistry Letters, (8), 1994, pp. 1537-1540
Alkylation of tetramethylammonium acylate complexes of chromium, molyb
denum, and tungsten with alkyldiphenylsulfonium salts readily proceeds
under mild conditions to afford alkoxycarbene complexes containing a
variety of functional groups in good yields.