Question 19 Identify the correct reactant necessary for the reaction shown below. Question 20 Which of the reactions s...
Question 17 Predict the major product(s) for the reaction shown below. (choose all correct answers) Br2 ?? Br Br Br Br Br Br Br பி Question 18 Which of the reaction steps, shown below, would be part of the mechanism for the acid-catalyzed hydration of trans-but-2-ene? (choose all correct answers) OH но н-о-s-он + H нн H-O-S-OH Он + о H H онн нн :Он он H H нн O нн H-O-S-OH он + OH o=S-O
Question 15 A reaction that has the possibility of forming multiple constitutional isomers as products, but which yields some more than others is called: [isomer] Regioselective Regioselective Question 16 Identify the correct major product(s) for the reaction shown below. 1. BH3, H20, THE my 2. H,02, OH, H20 . ??
Identify the product that forms at each step of the reaction sequence shown below. 5. Identify the product that forms at each step of the reaction sequence shown below. H3C ,CH3 CHACH OH. Bry, H,O KHSO4 NaOH 19 Y CHz
Question 23 Predict the final product for the series of reactions shown below. 1. Bra, H2O 2. Nah ?? 3. CH 0 con Cloon Question 24 Predict the final product for the two reaction sequence shown below. 1. HBr ~ 2. OC(CH). n 2. 0-C(CH3)3, 22 Ocichols Question 25 Which of the structures below contain an E-alkene? (choose all correct answers) Br HO 0 Br
Alkyne, Alkene reactions and sythesis problem help Question 1 Which molecule can you put instead of "?" in the reaction scheme below: de hacer esºs que Question 2 Choose a starting material "?" that will allow the following transformation in 1 step: ? ” ?? D What would be the reaction conditions "??" to accompany this transformation? Na, NH3 NH2, CH3CI NH2 - CH3CI Na, NH3 Question 3 Identify the major product of the following transformation: excess HBT Question 4...
Which reaction conditions would you use to perform the reaction shown below? HO CHE O 1. BH3, THE 2. H2O2, OH, H20 O 1. Oso 2. NaHSO3 H2O 1.03 2. Zn/H20 or DMS 1. Hg(OAC)2, H20 2. NaBH4
Question 11 Which of the reaction steps, shown below, would be part of the mechanism for the dehydration of 2-methylbutan-2-ol? (choose all correct answers) Whichor the reaction steps shown below would be patient + H20 one of truota to sobre horofa Question 12 Identify the correct major product for the reaction shown below. Å Hochs HSO4 → ?? OH OCH, OCH, WOH OCH
Predict the products the alkenes shown below would produce on exposure to each of the reagents (i)-(iv) (4 reactions X 5 alkenes = 20 products). Pay attention to both regiochemistry and stereochemistry (syn or anti addition). You may draw just one enantiomer of any chiral product, though both enantiomers will be produced in equal amounts. (i) BH3, then NaOH, H2O2 (ii) Hg(OAc)2 in H2O, then NaBH, (iii) Bra in CH3CH2OH Autumn 2019 EM 223 (iv) Cl2 QUÝ" H H
4) Provide the requested information (reagents or product/reactant) for each of the reactions shown below. If multiple products are formed, provide only the major product. OH A B OH Bry, H,0 a OH I H₂, PY Brz H Jo, DMS E F AND G A-reagents B-reagents C-reagents D-reagents E - product F-product G-product H-product 1 - product
1. Give the major product of the following reactions, write NR. if no reaction happens. Indicate the stereochemistry if necessary CHCI KOC(CH3). (CH),COH 1. conc. HBr, heat 2. KOBU, HOBU 1. NaOM, MOH CI 2. BICN 1. 1 eq. BH3. THE 2. H2O2, NaOH, H2O 3. Hg(OAC), MeOH 4. NaBH4, NaOH, H2O 1. conc. HCI 2. LDA, THF 3. O. CH,OH 4.(CH), 1. Hg(OAC), THE 2. NaBH, NaOH, H2O > OH (Hint: product has a bicyclic ring)