2-(2-bromovinyl)furan

(5E)-1-trimethylsilyl-hept-5-ene-1,3-diyne

2-(3-dibromomethyleneocta-1,6-dien-4-ynyl)furan

1,1-dibromopenta-1,3-diene

1-(2-furyl)octa-1,6-dien-4-yn-3-ol