4,5-dichloro-3,6-dimethyl-1-phenyl-1λ⁵-phosphepine 1-oxide

3,4-dimethyl-1-phenyl-2,5-dihydrophosphole

1-[2-oxopropyl(phenyl)phosphoryl]propan-2-one

3,4-dibromo-3,4-dimethyl-1-phenyl-1λ⁵-phospholane 1-oxide

3,4-dimethyl-1-phenyl-2,3-dihydrophosphole 1-sulfide