The behaviour of benzodioxin esters 1 ac and ketones 2 ac under the action of K2CO3 in acetone and of NaH in DMSO has been studied; the experiments were also carried out in the presence of scavengers of phenolic intermediates or products. Under the action of potassium acetonate the esters did not undergo ring opening and ring-chain tautomerism was absent; however, in the presence of 1-chloro-2-(diethylamino) ethane partial ring ...
[Chapleo, Christopher B.; Davis, John A.; Myers, Peter L.; Readhead, Michael J.; Stillings, Michael R.; et al. Journal of Heterocyclic Chemistry, 1984 , vol. 21, # 1 p. 77 - 80]
