M. Anbazhagan et al., REACTION OF LACTIM ETHERS AND LACTIM SULFIDES WITH ELECTROPHILES - ATTACK AT NITROGEN FOLLOWED BY RING-OPENING UNDER NEUTRAL CONDITIONS, Journal of the Chemical Society. Perkin transactions. I, (16), 1997, pp. 2421-2424
Electrophilic push-pull molecules react at the nitrogen of lactim ethe
rs and lactim sulfides; subsequent hydrolysis gives ring-opened produc
ts in good yields.