T. Naito et al., Radical cyclizations of vinylogous systems involving oxime ethers connected with carbonyl groups, HETEROCYCLE, 51(3), 1999, pp. 489-492
Stannyl radical addition-cyclization of the isolated oxime ethers or alpha,
beta-unsaturated oxime ethers connected by a tether to alpha,beta-unsaturat
ed aldehydes or ketones provides a new entry to the adjacently functionaliz
ed heterocycles.