烯

tetraethyltetrazene; 1,1,4,4-tetraethyltetraz-2-ene

ene synthesis

2,6,6-trimethylbicyclo-[3.1.1]hept-2-ene; α-pinene

ene synthesis

caoutch(ouc)ene

sobrerol; p-menth-6-ene-2,8-diol

pinol;4.7.7-trimethyl-6-oxabicyclo(3，2，1)oct-z ene