The tert-BUTYL sulfoxide directed ortho metalation group. New synthetic methodology for substituted aromatics and pyridines and comparisons with others metalation directors
Details of the directedorthometalation of tert-butyl phenyl sulfoxide (1 and 2-and 4-tert-butyl pyridyl sulfoxides (3a,b are described along with comparisons with established metalationdirectors (CONR2, OCONR2, OMOM, SO2t-Bu) via inter-and intramolecular competition experiments.