1-(phenylthio)-1-(triphenyl-5-phosphanylidene)heptan-2-one

N-(trifluoroacetyl)-di(p-methoxyphenyl)tellurimide

(4-nitrophenyl)(phenyl)iodonium triflate

((6-chloro-2-oxobenzo[d]oxazol-3(2H)-yl)methyl)triphenylphosphonium chloride