3,6-ditert-butyl-2,2,7,7-tetramethylocta-3,4,5-triene

2,2,4,4-tetramethyl-3-(sulfinylmethylidene)pentane

2,2,4,4-tetramethyl-3-sulfinylpentane

异丁烯

1,2-dipivaloylethylene