2-hydroxy-5,5-dimethyl-2-sulfanylidene-1,3,2λ⁵-dioxaphosphinane

but-2-enyl trifluoroacetate

α-Methylallyl Trifluoroacetate

2-[(3-buten-2-yl)oxy]-2-thiono-5,5-dimethyl-1,3,2-dioxaphosphorinane

2-(but-3-en-2-ylthio)-5,5-dimethyl-1,3,2-dioxaphosphinane 2-oxide