The first step of the addition of a hydrogen halide to an alkene is the addition of H+ to an sp² carbon to form a carbocation. Predict the carbocation formed in the following reaction and draw the mechanism of its formation. Edit the reaction by drawing all steps in the appropriate boxes and connecting them with reaction arrows. Add charges where needed. Electron-flow arrows should start on an atom or a bond and should end on an atom, bond, or location where a new bond should be created. 4² 0 0 0 1 0 E NN H₂C -CH₂ H EXP. CONT H-Br: H C N O S CI Br I P

In this lab you are performing your first organic synthesis and safety information on all the materials you are using must be obtained. Companies are required to provide material safety data sheets (MSDS) for chemical compounds they sell. Please examine the MSDS for salicylic acid, available here. You will find GHS pictograms within the sheet that summarize the main hazards of this compound. The pictograms are essentially the same as the symbols on WHMIS labels, available here for reference. Based on the pictograms, whatare the main hazards for salicylic acid? Select as many answers as appropriate Select one or more: Acute oral or inhalation toxicity Flammable material Carcinogen Self-reactive substance Gas under pressure Corrosive Oxidizing material

Draw the product for the following reaction between an alkyne and one equivalent of HCI. HCI 3-methyl-1-pentyne

Question 5: Draw the two routes to create the following alkene by a Wittig reaction and identify the preferred route