Citation: E. Jao et al., ADDITION-REARRANGEMENT OF ARYLSULFONYL AND ALKOXYSULFONYL ISOCYANATESWITH 5-METHYL-SUBSTITUTED 3,4-DIHYDRO-2-METHOXY-2H-PYRANS - SELECTIVESYNTHESIS OF FUNCTIONALIZED 2-PIPERIDONES, Journal of organic chemistry, 61(8), 1996, pp. 2865-2870