P. Langer et al., Synthesis of medium-sized rings, spiro-annulated oxazacycles and 1-amino-3-siloxy dienes based on regioselective reactions of ambident dianions, SYNLETT, (1), 1999, pp. 135-137
Ambident dianions react as dinucleophiles with various electrophiles to for
m six- to nine-membered heterocycles, spirocyclic compounds and 1-amino-3-s
iloxy dienes.