7. Follow this reaction series described in words below through to the end to determine the final product (recommended to draw structures here, might be easier). What is the final product of this entire series of reactions? Choose from options A-D below. a. 1-butene is reacted with Br2 and then that product reacted with xs NaNH2. b. After workup with water, the unsaturated hydrocarbon obtained is reacted with C. NaH and then d. with iodomethane. A. 1-pentyne C. 2-hexyne E. 2-pentyne B. 1-hexyne D. 3-methyl-1-pentyne

5.Synthesis. Make the following products from a suitable cyclic alkene starting material. Look at the functional group PATTERN present in the molecule, including stereochemistry. Br CH 3 Br CH3

The reaction of HBr with 1-butene produces only one product, 2- bromobutane. Why does this product form instead of 1-bromobutane? Select one: O A. Br bonds to the C-2 alkene carbon in the first step, forming the more stable carbon anion with (-) charge on C-1, followed by - bonding of H* electrophile to (-) charged C-1. OB. There is less steric hindrance if Br binds to C-2 and H* bonds to C-1. O C. H bonds to the C-1 alkene carbon in the first step, forming the more stable carbocation, with (+) charge on C-2, followed by bonding of Br nucleophile to positively charged C-2. O D. H and Br know what the "EL-NM" rule is and dutifully comply with it.

Using the reagents below, list in order (by letter, no period) those necessary to prepare compound B from propene (show th addition of the CN before electrophilic addition reactions with the alkene). Note: Not all spaces provided may be needed. Ty "na" in any space where you have no reagent. a. Br2 b. Br2 c. NaCN d. HCN e. NBS, light f. Br2, H₂O g. NaOEt, EtOH

LETTER (D, E F)

Choose the two alkyl bromides and the hydrogenation method that must be used to synthesize these alkenes from acetylene. Enter your answer as two letters in alphabetical order, followed by a number; i.e. ac2, not ca2. Do not use punctuation. Alkyl Halides a. CH3CH,Br. b. CH3(CH2)4Br c. CH3(CH2);Br d. CH3(CH2)6Br e. CH3(CH2);Br f. CH3(CH2);Br g. CH3(CH2)12B Hydrogenation Method 1. H2, Lindlar's catalyst 2. Na, NH3 (1) Alkene #1: H3C CH3 Alkene #2: CH3 H3C

Draw the structural formula of the alkene that reacts with ozone followed by dimethyl sulfide to give   product or set of products.

Hydrogenation of 3-carene (below) can yield two steroisomeric alkane products. Draw their structures. The reaction actually only yields one of the two products. Put a box around the product formed and explain your choice.

b) An unsaturated cyclic hydrocarbon, A, undergoes a reaction with Brz in CCI4 to yield product 1,2-dibromo-1-methylcyclohexane. Compound A reacts with H2O in acidic condition to produce B. Oxidation of A in hot concentrated KMNO4 gives C. Baeyer's test done on A using cold diluted basic KMNO4 produces brown precipitation to give compound D. Draw the reaction scheme with all chemical reactions involved and indicate structures A, B, C and D.

Predict the organic products of the reaction of 2 butene with each reagent. Be sure to indicate stereochemistry and regioselectivity where appropriate. a. Br2 in H2O b. Hg(OAc)2, H2O c. Product from (b) + NaBH4