Hydrocarbons Questions and Answers

Tag each carbon atom in the main chain of the 2 3 dimethylpentane C H 6 molecule drawn b H H C H H H H H CC C C C H H H H H H H C H X

7 Draw the major product of the following reactions Indicate in the boxes whether the reaction proceeded via SN1 SN2 E1 or E2 17 points a b Ph H3C d H H f Cl Br H3C H H CH3 Ph Br CH3 OH Br OTS Br OMS CI NaNH NH3 1 CH3OH reaction is regioselective NaOMe MeOH Draw in the box the Newman projection of the reactive conformer 1 Nal acetone 2 NaN3 DMSO EtOH A t BuOK t BuOH Type of reaction

Predict the position of the equilibrium for the reaction and provide a brief explanation The acidic protons are shown in red H A B C D Reverse direction is favored because carbon is less electronegative making C the weaker base and A the stronger acid Forward direction is favored because nitrogen is more electronegative making B the weaker base and D the stronger a Forward direction is favored because carbon is less electronegative making C the weaker base and A the stronger acid Reverse direction is favored because nitrogen is more electronegative making B the weaker base and D the stronger ac

Draw the product that could be formed when 1 3 butadiene reacts with maleic anhydride Include any relevant stereochemistry 1 O 00 Q

Ba H H O O Ortalama Ba Enerjisi kJ mol 436 498 H g O g H O s oldu una g re O H ba enerjisi ka kJ mol d r AH 286 kJ m

Which Newman projection correctly depicts the conformation that would produce Z 3 methylpent 2 ene under strictly E2 conditions A B C D H C H Br 1 11 2 3 4 H CH3 CH CH3 Newman Projection H CH C H Br H 21 CH CH E2 H H Br CH 31 CH CH3 CH3 H H C H Br H AY CH CH3 CH3

O A OB C 1 Hg OAC 2 HOCH CH3 2 NaBH4 B C D

Draw the starting structure that would lead to this major product under these conditions Select to Draw 1 NaNH2 2 CH3CH2CH2Br I I I

Draw the starting structure that would produce this product under these conditions Select to Draw Br2 1 equiv Br Br I I I

Draw the starting alkyne that would lead to the following two products under these conditions I I I I I I I Select to Draw 1 KMnO4 OH warm 2 H3O HO OH Q

Draw the major product for this reaction Ignore inorganic byproducts 1 Hg OAc 2 H O 2 H2SO4 Select to Draw

OA OB OC Provide the major organic product of the reaction shown below A OH B Olli 1 NaH 2 CH CH CH I C D

Draw the skeletal line bond structure of E 4 7 dimethyloct 4 en 2 yne Select to Draw

Draw the starting alkyne that would lead to this major product under these conditions Select to Draw HBr 1 equiv Br I I I I I I I

Draw the starting alkyl bromide that would produce this alkyne under these conditions Select to Draw 1 NaNH2 A 2 H3O

Pick the IUPAC name for the product O 1 2 epoxy 2 propylcyclohexane O 1 2 epoxy 1 propylcyclohexane O 1 2 epoxy 2 butylcyclohexane O 1 2 epoxy 1 butylcyclohexane MCPBA

Based on the polarization of the bonds which of the electrostatic interaction is more favorable in the transition state A Transition state a B Transition state b a b 8 OCH Sta OCH OCH 1 3 product OCH O

Rank the following dienes with respect to their expected rate of reaction with a dienophile Drag and drop options on the right hand side to reorder and match with items on the left Reordering may cause items on the right hand side to swap positions Most reactive Second most Least reactive Compound b Compound c H Compound a

Which of the following dienes will react faster with a dienophile A B Compound a Compound b a b

Which of the following alkenes are electron poor and could be used as dienophiles Click all that apply A B C Select all that apply Compound a Compound b Compound c D Compound d CF3

Choose the correct structure of the major product for the following reaction A B C Compound a a Compound b Compound c D Compound d CI b HCI 40 C CI

Consider the two products formed Which product is more stable A B C D Compound 1 because it is a disubstituted alkene Compound 1 because it is a monosubstituted alkene Compound 2 because it is a disubstituted alkene Compound 2 because it is a monosubstituted alkene Br 1 2 addition 1 4 addition Br

Label the following reaction as either a cycloaddition sigmatropic rearrangement or an electrocyclic reaction A Cycloaddition B Sigmatropic rearrangement C Electrocyclic reaction

low many asymmetric carbons are present in the compound below N O H I OH

Which molecule should have the larger heat of hydrogenation 1 3 or 1 4 pentadiene A A 1 3 pentadiene B 1 4 pentadiene B

An element is composed of a mixture of two isotopes In every sample there is 75 77 of element with a mass of 34 97 amu and 24 23 of the element with a mass of 36 97 amu The average atomic mass of this element is 1 35 45 amu 2 34 97 amu 3 36 97 amu 4 36 49 amu 5 35 83 amu

Which compound s would be expected to show IR absorption at 3300 cm 1 A B CH3CH2C CHD O A OB OC CH3C CCH3 C

What is the major product of the following reaction sequence 1 H Lindlars catalyst 2 B CC1 enantiomer enantiomer

What is the major product for the following reaction sequence la NaNH NH liq 1b CH CH CH Br 2 H excess Pd C

Name the part marked as number 3 NH 0 3 1 2 OH NH 4 a R group O b amine group O c a carbon O d carboxylic acid group

OL DIBAL H H O 2 name product HO H

What Etu type OF 0 IS reaction this Oft Base Et 0 O

2 Indicate the direction of the polarity for each of the bonds indicated except for all carbon to carbon bonds 8 points Br Mg C H CH3 HS F CH N H H NO

a Write a detailed mechanism using arrows to explain only two of the following 10 points 7 a Write a detailed mechanism using arrows to explain only two of the following 10 points Br uv CC14 Br Bri 1 I

6 Complete the following reaction scheme 60 points 4 points each a Br2 hv

a b c Draw structures for the following Hept 3 yne 3 phenyl 2 2 dimethylhexane 2 bromo 4methylhex 2 ene

Which of the compounds shown below would be the most likely product expected from the reaction scheme shown CH CH C CH OI O III Oll CI excess II HCI CI av III IV CI G V G

Predict the product s of the following reaction Br IV I Br 11 all of these are products 11 HBr ROOR Br Br E IV

OOO Br 1 IV I 11 all of these are products HBr ROOR Br III Br IV

Identify the product formed in the reaction shown below HO III 01 OIV OCH 3 H H CO s II OH H H3CO CH3OH H SO4 OCH 3 HO IV OH

Given the equation for the combustion of a compound 2C H6 7024CO2 6 What is the formula for the missing product OH O H O OHCOOH OCH3OH

What is the empirical formula of a compound that has the molecular formula C6H12Cl2O2 C6H12Cl202 C3H6CIO CH CIO CHCIO

8 Calculate AH for the reaction 6 C s 3 H g CH I given 2 C6H 1 15 O g 12 CO g 6H O l C s O g CO g H g O g H O l AH 6399 kJ AH 394 kJ AH 237 kJ

1 Which alkane would have a CH3CH3 CH3CH CH CH3 CH

Ise the given average bond dissociation energies D to estimate AH for the following reaction CH Cl g 2 H g CH4 g 2 HC1 g Bond D kJ mol C C 330 H C 432 H H 436 C H 410

Match the description to the element pair Magnesium and Sodium Carbon and Hydrogen Carbon and Oxygen Neon and Sodium Calcium and Sulfur Copper and Chlorine Argon and lodine Choose Choose Likely to React Unlikely to React Choose Choose Choose Choose Choose

Which of the following listed is the most likely product in the reaction shown NaOH aq HO Br HO NBS hv OH Br OH

Use the table to calculate AH in kilojoules for the reaction below C 0 HIH H H H CI H F N H N O O H 0 0 F F 436 kJ mol 431 kJ mol H CO g 2H g CH3OH g 567 kJ mol 391 kJ mol 201 kJ mol 463 kJ mol 146 kJ mol 155 kJ mol H C H H Average Bond Energies kJ mol 413 kJ mol 348 kJ mol 293 kJ mol 358 kJ mol 485 kJ mol 328 kJ mol 259 kJ mol 242 kJ mol C H C C C N C O C F C CI C S CI CI C C CC C O 0 0 CO N N N N CON 614 kJ mol 839 kJ mol 799 kJ mol 495 kJ mol 1072 kJ mol 615 kJ mol 418 kJ mol 941 kJ mol 891 kJ mol

S Me Sio S ii i BuLi and Et O BF3 iii H H O O i LiMe Cu ii PhCH Br iii H H O

view ed May 11 at 2 09pm aiz Instructions assignment has 22 multiple choice questions and will automatically submit at the Question 11 Which answer contains all metalloids semi metals OB Al Ga In Ge Ga As Se B Si Ge Sb OF Cl Br I