orgo 2 exam 1

look for H in DIFF environments

identical H’s count as 1 signal

look for O-CH3 on sheet

n + 1 rule:

0 - 1 - singlet

1 - 2 - doublet

2 - 3 - triplet

3 - 4 - quartet

Bonds:

C - 4

N - 3

O - 2

H - 1

inside the benzene ring only 2 diff signals

most upfield = lowest ppm

rmr to count BOTH neighboring atoms

so if one is a singlet and the other is a doublet it would be a doublet

start w/ DOU

name

use n + 1 backwards

use splittting to eliminate options

major = endo = UNDER bridge

stereochem stays the same ALWAYS ONLY for alkenes

Always 6 membered ring will be product

Diene = 4 pi bonds C = C - C = C

Dienophile = C = C OR C=- C triple bond

Diene + alkene (1 double bond) = 1 double bond

Diene + alkyne (1 triple bond) = 2 double bonds

conjugated:

C = C - C = C

1 single bond between

isolated:

C = C - C - C = C

2+ single bonds between

Cumulated:

C = C = C

double bonds touch

first step: number all the carbons in the conjugated diene

low temp: 1,2 addition

high temp: 1,4 addition DOUBLE BOND MOVES to middle

is it mark, or anti mark?

mark: HCl HBR HI, H2O, H+, Hg(OA)2 MORE substituted carbon

If MINOR: do the opposite addition

SO3 + H2SO4 = -SO3H

Br2 + FeBr3 = -Br

Cl2 + FeCl3 = -Cl

Only when X is attached to a carbon w/ ONLY SINGLE BONDS

R - Cl + AlCl3 = -R

R - Br + AlBr3 = -R

R - COCl + AlCl3 = -COR

Since this quesiton has a DB it would be D) No Reaction