1. Wittig reaction leads to the formation of new carbon-carbon bonds. What is another reaction that also produces new carbon-carbon bonds? Write general reactions for both methods, clearly indicating the characteristic reagent used in each.

2. For the Wittig reaction experiment why would the product be a coloured compound? Why would we use UV method in this synthesis reaction?

3. Why Z-stilbenes have lower intensity bands in UV compare to the E-isomers?