nmr Flashcards
how many H NMR environments are there GRAMINE
7 + NH
what are the H NMR shifts in descending order FOR GRAMINE
B>E>D>C>A>F>G
Rusul:
C>F>E>D>B>G>H
WHAT ARE THE GRAMINE C NMR SHIFTS IN DESCENDING ORDER
8>3>1>5>4>6>7>2>9>10
HOW MANY ENVIRONMENTS IN GRAMINE CNMR
10
how many c NMR environments are in anisole?
5
what are the anisole of the c NMR environments in descending order?
directly attached to O > ortho to O > para to O > Metha to O > the CH3 on the O.
how many environments in h nmr of anisole
4
state the H NMR environments in descending order?
H ortho to O > H para to O > H Metha to O > H3 on OCH3
WHAT IS THE C NMR FOR ETHANOL IN DESCENDING ORDER
C CLOSEST TO O > THE OTHER C
HOW MANY POSSIBLE H NMR SHIFTS IS IN ETHANOL
3
STATE THE ORDER FOR H NMR OF ETHANOL.
CH2 > CH3
OH IS BETWEEN 3 AND 2
WHAT IS THE STRECH FOR C-N
1000 - 1250 STRONG
WHAT IS THE STRECH FOR C-H
2850 - 3000 STRONG
WHAT IS THE STRECH FOR C-H AROMATIC
> 3000 WEAK AND POINTY
C=C ON AROMATICS IR?
1475 -1600
WHAT ARE MANNIC REACTIONS?
The Mannich reaction is a three-component organic reaction that involves the amino alkylation of an acidic proton next to a carbonyl functional group by formaldehyde and a primary or secondary amine or ammonia.
WHAT REACTION IS A MANNIC REACTION?
The Mannich reaction is an example of nucleophilic addition of an amine to a carbonyl group followed by dehydration to the Schiff base.
WHAT IS THE SCHIFF BASE?
The Schiff base is an electrophile which reacts in the second step in an electrophilic addition with a compound containing an acidic proton (which is, or had become an enol).
