Synthesis of New Heterocycles with Dicoordinated Phosphorus: 3-Substituted Thiazolo[3,2-d][1,4,2]diazaphosphole and its 5,6-Dihydro and Benzo Derivatives - Bansal, Raj K; Mahnot, Ruchi; Sharma, Dinesh C; Karaghiosoff, Konstantin (Synthesis, 1992)