Which of the following compound would yield trialkylborane shown below when treated with BH3 THF? B a. 2-methylbut-2-ene b. 2-methylbut-1-ene c. 3-methylbut-1-yne d. 3-methylbut-1-ene
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- Draw the structure for an alkene that gives the following reaction product. CH3 HCI CH3CHCH2CHCH3 CI • Ignore alkene stereochemistry. •You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. P. opy aste ChemDoodle"Choose the most appropriate systematic (IUPAC) name from the choices below that accurately describes the following structure (drawn in a Newman projection). H H. CH3 H;C 3-methyl-4-flouro-1-pentene 4-fluoro-3-methyl-1-pentene 3-methyl-1-alkenyl-4-fluoride 2-fluoro-3-methyl-4-pentene O 4-fluoro-2,3-dimethyl-1-buteneWhich of the following provides a synthetic route to convert 3-iodo-2-methyl-1- butene into 2-methyl-2-butene? 1. NaOH; 2. H₂, Pt 1. H₂, Pt; 2. Br2 1. H₂, Pt; 2. NaOEt 1. H₂, Ni₂B; 2. KOtBu 1. H₂, Pt; 2. KOtBu
- Give the structure corresponding to each name.a. trans-2-methylcyclohexanolb. 2,3,3-trimethylbutan-2-olc. 6-sec-butyl-7,7-diethyldecan-4-old. 3-chloropropane-1,2-diole. 1,2-epoxy-1,3,3-trimethylcyclohexanef. 1 -ethoxy-3-ethylheptaneg. (2R,3S)-3-isopropylhexan-2-olh. (S)-2-ethoxy-1,1-dimethylcyclopentanei. 4-ethylheptane-3-thiolj. 1-isopropylthio-2-methylcyclohexanells 02/18/19 41% ehhedrick0507 This is a Molecule Drawing question/Itis worth 1 point/ You have 1 of 3attempts remaining/Thereis n ttempt penalty 13 Question (1 point) e See page 605 Carbenes can add to alkenes to give a cyclopropane derivative. Draw the alkene (unknown X) that reacts with the carbene to give the following product. 3rd attempt VIEW SOLUTION 13/20 7 OF 20 QUESTIONS COMPLETED MacBook AirWhich stereoisomer would be produced from the reaction of trans-2-butene with OsO4 followed by H2O2? A. 2S,3S- diol and 2R, 3R-diol B. 2S,3R-diol and 2R,3S-diol C. 2S,3S-diol only D. 2R, 3R-diol only E. 2S,3R-diol only
- 46 ests for Alkenes ory Questions vers and additional paper if necessary.) 3. Which of the cyclic compounds A-E will give a positive test for unsaturation in alkenes with 2% aqueous KMNO4 solution? CH3 CH3 D E The use of saturated versuş unsaturated cookingWhich of the following reactions of alkenes is one-step reaction? O a. Bromination (treatment with Br2 in CHCI3) b. Hydrogenation (treatment with H2/Pt) O c. Acid-catalyzed hydration (treatment with aqueous H2SO4) d. Treatment with m- chloroperoxybenzoic acid followed reaction with aqueous acidic solutiong. H3C-0 CH3 + F₂ → azeb zid ni enilno nento yns esilitu ton od .etubbel ni bamse gniwollo Organic Reactions: 1. Draw all potential products in the space below, for the alkane halogenation (wit heat/UV light) reaction. 2. Draw the product of the following alkene halogenation reaction: CH2=CH-CH2-CH3 + Cl₂ →
- D. HOw many aistinct terminal alIKynes exist with a molecular formuia of C5H8! c. How many distinct internal alkynes exist with a molecular formula of C6H10? 4. Which of the following has the lowest b.p? a. 3,3-dimethyl-1-butyne; b. 1-hexyne с. 2-heptyne; d. 3-hexyne; e. 1-decyne. 1 5. Will the reactions shown below go the direction as indicated? + CHOMaBr CHFive isonieric lkenes are isolated during the dehydration of 4methyl-2 pentanol What in the most minor produe? OA 4methyET pentene OB. cis 4-methyl-2 pentene OC.vans-4-methyl-2 pentene O D.al products wilf be formed in equal amount OE 4methyl-3 pentene QUESTION 13 If 3.8 g of iodoethäne (MW = 155 97 gimol) was reacted with 35 g of acetaminophen (MW 151. 17 gimol) and 38 g of potassium carbonate (MW - 138 21 gimal) in 1Emk of 2-butanuhe (MW - 12 06 gimol d0n05 gml) to produce phenacetin. what is the limiting reagent? O 1. None of the above O2. lodoethane O3.2-Butanone O 4. Potassium carhonate O 5. Acataminophen QUESTION 14 What is usuaily the purpose of preparing a semicarbazone trom the carbonyi compound? O A. identify and differentiate between two possible reaction products O B. product can be easily removed by forming the complex with semicarbazide OC semicarbazones are easier to purify O D. remove impurities from the product mixture O E. none of the answers.Based on the stability of alkenes, and the stability of any intermediates, which alkene do you think should be the predominate product? (There may be more than one...) OH conc. H₂SO