5. When (R)-4-bromohept-2-yne is treated with excess H2 in the presence of Pd/C, the product is...
B3: The following optically active oone optically active, one with no optical ac alkene, upon hydrogeraito explain this observation. n, yields two 4 pts H2 2 different products Pd/C CH3 B4: 1,3-butadiene, when treated with HBr, gives a mix of two product neither of which is 4-bromobut-1-ene. Predict both these products using mechanism that involves a single carbocation intermediate: 4 4-bromobut-1-ene Anot formed! HBr C5: Terminal alkynes are moderately acidic synthetically. When pent-1-yne is treated with a strong base [sodium...
Draw the product formed when 1-bromobutane is treated with cach reagent. 1. Li (2 equiv) 2. Mg in (CHCH2):0 solvent 3. Li (2 equiv), then Cul (0.5 equiv) 4. The answer in (a), then H;O 5. The answer in (b), then D20 6. The answer in (a), then CH,CCH Draw the product formed when (CH3CH2CH2CH2) CuLi is treated with each compound. In so cases, no reaction occurs. CHн, ,then H,O Draw the product formed when the a.ß-unsaturated ketone A is...
2. Predict the product for the following transformations (show proper stereochemistry). Pd/C, H2 Me Me Pd/C, H2 Me Ph 4. Draw an abbreviated mechanism of the reaction shown below (you can symbolize the Pd/C as a surface, like the one drawn below) Hint. draw an intermediate similar to this: R H MeO H H2 (gas) R MeO metal surface metal surface Pd/C) (Pd/C)
2. Draw the major product(s) formed when the optically active compound shown below is treated with H2O/H2SO4. Is the product optically active? Why or why not? (4 pts) optically active
FULL SCREEN PRINTER VERSION 4 BACK NE Integrated Problem 18.76 Benzene was treated with (R)-2-chlorobutane in the presence of aluminum trichloride, and the resulting product mixture was found to be optically inactive. 18.41 18.42 em Get help answering Molecular Drawing questions. Draw the expected organic product(s) of the reaction assuming that conditions are chosen to favor monoalkylation. Using wedges and dashes, indicate the stereochemistry, 18.53 18.54 ? Edit SHOW HINT Choose the correct explanation, why the product mixture is optically...
Reaction of 3,4,5-trimethyl-4-hexen-1-yne with H2 and Pd/C will produce which of the following compounds? 3,4,5-trimethyl-1-hexyne 2,3,4-trimethyl-5-hexyne 2,3,4-trimethylhexane 3,4,5-trimethylhexane 2,3,4-trimethyl-1-hexene
Hc VCH Draw the organic product formed when CH3CH2CH2OH is treated with each reagent. a H2S04 (180°C) d SOC12, pyridine Ig 1) NaH; 2) CH3CH2Br b NaH e PBr3 h 1) TSCI, pyridine; 2) NaSH c HBr f TsCl, pyridine 3. Draw the organic product formed when l-methylcyclohexanol is treaded with each reagent. In some cases, no reaction occurs. a KH c HBr Te NaHCO3 b Nacid HCI f 1) KH; 2) CH3CH2Br Draw two different routes to each of...
Reaction of 3,4,5-trimethyl-4-hexen-1-yne with H2 and Pd/C will produce which of the following compounds? 3,4,5-trimethylhexane 3,4,5-trimethyl-1-hexyne 2,3,4-trimethyl-5-hexyne 2,3,4-trimethylhexane 2,3,4-trimethyl-1-hexene OOO
2. Fill in the missing reagent, product or catalyst. H2, Pd/C A. excess) CH2l2, Zn(Cu) B. ether HIO4 C. H20, THF 2) NaHSO3
Starting Material Reagent Major Product? H2, Pd/C 1) 050 2) aq. KHSO3 1) CH3CO3H 2) NaOH/H20 Braz/H20 1) 0; 2) Zn/HOÁC Provide reagents and/or starting materials to accomplish the following transformations pH ن – EC–CH = ا سے ہی الا) CH3 0CH3 H.C ) م any alkene CH3 H3C- Hy, Pd/C CH3 optically active diterpene mixture of diastereomers 1) 0, 2) Zn/HOÁC нэс CH3 + 0 + 0 + H нас