(4-nitrophenyl)methylidene-triphenyl-λ⁵-phosphane

methyl 2-diphenylphosphanylbenzoate

(2-hydroxyphenyl)-triphenylphosphanium,bromide

2-diphenylphosphoryl-1-phenylhexan-1-one

2-diphenylphosphoryl-4-methyl-1-phenylpentan-1-one