Abstract 1-Phenyl-2, 2, 6, 6-tetramethylphosphorinan-4-one (1) reacts with sulfur and oxygen to the corresponding P-sulfide and until now unknown P-oxide respectively. Although both the compounds react as a ketone, the simultaneous reaction with sulfur and ammonia will not give the corresponding Δ 3-thiazolines. Δ 3-thiazolines are formed on treating the bis-[1-phenyl-2, 2, 6, 6-tetramethyl-1-oxo-phosphorinan-4-one-3-yl]-disulfide ...
