4c-tert-butyl-3r-methyl-2,2,2-triphenyl-2λ5-[1,2]oxaphosphetane

triethyl(ethylidene)phosphorane

(E)-(4,4-dimethylpent-2-en-2-yl)trimethylsilane

3,4,6,7,8,9-hexahydro-2H-quinolizine-1-carboxylic acid ethyl ester