Organic Chemistry Answers

2. Give three dimensional representation for the orbitals used by the C’s in

a) H 2 C=CH + b) H 2 C=CH - and c) H 2 C=CH .

1.    Give three-dimensional representation for the orbitals used by the C’s in

a)     H₂C=CH⁺              b) H₂C=CH^-                            and c) H₂C=CH^.    

1. Complete the following reactions with appropriate mechanism and identify the

major products

2. Find out if the following carbocations will go through rearrangement and why?

1. Consider the compound 3(S),5,5-trimethylcyclohexene. Upon reduction with H 2

on a 1% Pt/C catalyst, draw the equation for this reaction, find out the absolute

configuration of the product and explain why the absolute configuration is completely

inverted in this reaction.

2. Give three dimensional representation for the orbitals used by the C’s in

a) H 2 C=CH + b) H 2 C=CH - and c) H 2 C=CH .

3.Write the factors those stabilizes free radicals.

4. How does regioselectivity and stereospecificity helps to determine the major

product formation in a chemical reaction?

Give three dimensional representation for the orbitals used by the C’s in a) H2C=CH+ b) H2C=CH- and c) H2C=CH. 

Complete the following reactions with appropriate mechanism and identify the

major products

a)

H2

10% Pd on graphite

b)

Br2

CH212, Zn(Cu)

1) Oz in CH2Cl2

2) Zn, HOẶC

d)

 (3 pts) Give three-dimensional representation for the orbitals used by the C’s in

a) H2C=CH+

 b) H2C=CH- and c) H2C=CH.

(5 pts) Consider the compound 3(R),5,5-trimethylcyclohexene. Upon reduction with H2

on a 1% Pt/C catalyst, draw the equation for this reaction, find out the absolute

configuration of the product and explain why the absolute configuration is completely

inverted in this reaction.