Novel cyclization of dimeric dianions of anils or aldehydes with triphosgene: A safe and efficient synthesis of substituted imidazolidin-2-ones and 4,5-diaryl-1,3-dioxolan-2-ones
Prasad, Girija; Singh, Geeta; Mehrotra, K. N., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1980, vol. 19, # 8, p. 653 - 654