nmr

Question 1

how many H NMR environments are there GRAMINE

Answer 1

7 + NH

Question 2

what are the H NMR shifts in descending order FOR GRAMINE

Answer 2

B>E>D>C>A>F>G

Rusul:

C>F>E>D>B>G>H

Question 3

WHAT ARE THE GRAMINE C NMR SHIFTS IN DESCENDING ORDER

Answer 3

8>3>1>5>4>6>7>2>9>10

Question 4

HOW MANY ENVIRONMENTS IN GRAMINE CNMR

Answer 4

10

Question 5

how many c NMR environments are in anisole?

Answer 5

5

Question 6

what are the anisole of the c NMR environments in descending order?

Answer 6

directly attached to O > ortho to O > para to O > Metha to O > the CH3 on the O.

Question 7

how many environments in h nmr of anisole

Answer 7

4

Question 8

state the H NMR environments in descending order?

Answer 8

H ortho to O > H para to O > H Metha to O > H3 on OCH3

Question 9

WHAT IS THE C NMR FOR ETHANOL IN DESCENDING ORDER

Answer 9

C CLOSEST TO O > THE OTHER C

Question 10

HOW MANY POSSIBLE H NMR SHIFTS IS IN ETHANOL

Answer 10

3

Question 11

STATE THE ORDER FOR H NMR OF ETHANOL.

Answer 11

CH2 > CH3

OH IS BETWEEN 3 AND 2

Question 12

WHAT IS THE STRECH FOR C-N

Answer 12

1000 - 1250 STRONG

Question 13

WHAT IS THE STRECH FOR C-H

Answer 13

2850 - 3000 STRONG

Question 14

WHAT IS THE STRECH FOR C-H AROMATIC

Answer 14

> 3000 WEAK AND POINTY

Question 15

C=C ON AROMATICS IR?

Answer 15

1475 -1600

Question 16

WHAT ARE MANNIC REACTIONS?

Answer 16

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.

Question 17

WHAT REACTION IS A MANNIC REACTION?

Answer 17

The Mannich reaction is an example of nucleophilic addition of an amine to a carbonyl group followed by dehydration to the Schiff base.

Question 18

WHAT IS THE SCHIFF BASE?

Answer 18

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).