2-bromo-1,1-dimethyl-3-methylidenecyclopropane

magnesium,carbanide,iodide

(E)-4-(1H-imidazol-1-yl)pent-3-en-2-one

2,4,6-trimethylpyrylium chloride

5-Brom-4-ethoxy-2-methyl-2-penten