Abstract
The addition of 3-methylbut-2-enoic acid-3-bromo-2-hydroxypropyl ester 2 and 1-bromo-3-phenylsulfanyl propan-2-ol 3, obtained from epichlorohydrin, to aroxy and alkoxysulfonyl isocyanates 1 in anhydrous ether at ambient temperature affords the corresponding N-sulfonyl bromocarbamates 4. These are treated with triethylamine in refluxing acetone to give exclusively the corresponding polyfunctional oxazolidin-2-ones 5 with good yields.