Construct a three-step synthesis of trans-2-pentene or trans-pent-2-ene from acetylene by dragging the appropriate formulas into the bins. Note that each bin will hold only one item, and not all of the given reagents or structures will be used. Reactant (acetylene) HC=CH HC=C-CH, reagent1 (1) NaNH, (2) CH₂ Br HBr Step 1 product HC=C–CH,CH3 H3C. CH3 ‚H H reagent2 (1) NaNH, (2) CH3CH₂ Br Answer Bank H₂, Pt/C Step 2 product H₂C-C=C-CH₂CH₂ reagent3 Na, NH3 Н. Product CH3 CH3 H

Draw the products of the three step reaction sequence shown below. Ignore inorganic byproducts. If the reaction results in a mixture of ortho and para isomers, draw only the para-product.

Choose reagents to convert 2-cyclohexenone to the following compounds. Syntheses may require several steps. Use letters from the table to list reagents in the order used (first at the left). i 1. Li(CH2=CH)2Cu Reagents a 1. Li(CH3)2Cu 2. H3O+ e 1. Li(C6H5)2Cu 2. H3O+ b 1. NaBH4 f CH2l2/Zn(Cu) / ether j 2. H3O+ C NH3 / KOH g 1. CH3MgBr/dry ether k 2 H3O+ d H2NNH2/KOH h HN(CH3)2 HO CH3 a) b) OH N(CH3)2 2. H3O+ (C6H5)3P+-CH2 H₂ over Pd/C KMnO4/H3O+

Show how to convert 4-methyl-1-pentene to the compound shown here. NH₂