Several reagents and several organic structures are shown below. Construct a multistep synthetic route for the synthesis of acetylene from ethane by dragging the appropriate pieces into the bins. Note that each bin will hold only one item, and not every given reagent or structure will be used. (Stoichiometry is omitted.) H3C-CH3 H-CEC-H (ethane) (acetylene) Reagent 1 Step 1 Product Reagent 2 Step 2 Product Reagent 3 Step 3 Product Reagent 4 NBS ROOR HBr HBr CH2 || CH2 Br. Br. Br. Br. Br Br2 Br2 Br. ROOR CH2CI2 CH2 CH CH || CH2 CH2 CH hv CH2 Br CH3 CH CH3 Br |(CH3)3CO-K* NANH2

Above each arrow, supply the reagent(s)/reaction conditions that is(are) needed for each of the following (Only one reaction is necessary for each transformation.) transformations. Br SH

3. Provide a synthesis of the product (PDT) from the allyl ketoester starting material (SM). No mechanisms needed, but be specific about reagents and conditions for undertaking this multistep synthesis. سلام multistep sequence conditions/reagents مركم PDT

Propose a sequence of synthetic steps that would efficiently accomplish the conversion shown below. You can use any inorganic reagents you like, but the only organic compound you are allowed to use is cyclopentane. multiple steps

6) Draw the major organic product generated in the reaction below. H*, H,0 dilute aqueous acid

Curved arrows are used to illustrate the flow of electrons. Using the provided starting structure, draw the curved electron-pushing arrows for the following reaction or mechanistic steps. Be sure to account for all bond-breaking and bond-making steps. Then draw the organic product of this reaction. Include all lone pairs in the structures. Ignore inorganic byproducts, counterions, and solvents. Incorrect, 2 attempts remaining H & H H Select to Add Arrows H₂O heat H :O: :Br: H H Select to Add Arrows H₂O heat Select to Draw Product

The synthesis shown above can be accomplished in three steps. Select the reagents for each step from the dropdown lists below.

2. Propose a synthesis for the following alkene. You may use any reagents but ethane must be your only source of carbon.

None

Show the two intermediate structures and final product of the following series of electrophilic aromatic substitution reactions. Show all lone pair electrons.