3,4-Dihydro-2H-pyran
NMRanalyst Sample Application
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Sample Description:

 Molecular Formula: C5H8O
Molecular Weight: 84.116
InChI= 1/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2
IUPAC Name:  3,4-Dihydro-2H-pyran
CAS Number: 110-87-2
PubChem: 8080
NMRShiftDB: 10016163
Spectrometer: Bruker ARX 400 MHz
Solvent: CDCl3
Provided by:  WebSpectra: Intermediate (2) Problem #2


 

1D Proton Resonances From Web Site:


$> cat proton.ll
7.2605  0.01

6.3661  .17
6.3614  .17
6.3567  .17
6.3505  .17
6.3458  .17
6.3411  .17

4.6732  .14
4.6639  .14
4.6575  .14
4.6560  .14
4.6546  .14
4.6483  .14
4.6369  .14

3.9798  .67
3.9670  .67
3.9539  .67

2.0099  .2
2.0050  .2
2.0003  .2
1.9951  .2
1.9901  .2
1.9855  .2
1.9800  .2
1.9747  .2
1.9739  .2
1.9701  .2

1.8693  .2
1.9654  .2
1.8797  .2
1.8786  .2
1.8644  .2
1.8525  .2
1.8488  .2
1.8382  .2
1.8372  .2
1.8223  .2

1.6248  .01
			
 

1D Carbon Resonances From Web Site:


$> cat carbon.ll
144.040
100.699
65.7361
22.7347
19.5035
			
 

Automated VerifyIt Proton Assignments:

Proton Assignments
 

Automated VerifyIt Carbon Assignments:

Carbon Assignments

Top 10 FindIt Molecular Structures Consistent With Molecular Formula and Proton Resonances:

The correct structure is at position 1.

FindIt Structures

 Best 10 structures in decreasing rating (structure ID shown in parentheses):
    1: 0.981972 (    8080)    2: 0.966958 (  520424)    3: 0.964096 (  220164)
    4: 0.955184 (  281478)    5: 0.948088 (   79346)    6: 0.947005 (  543996)
    7: 0.940914 (   18569)    8: 0.933456 (  520540)    9: 0.924572 ( 6453592)
   10: 0.920587 (  102677)
			

Top 10 FindIt Molecular Structures Consistent With Proton and Carbon Resonances:

The correct structure is at position 1.

FindIt Structures

 Best 10 structures in decreasing rating (structure ID shown in parentheses):
    1: 0.978872 (    8080)    2: 0.855517 ( 5325865)    3: 0.853329 (   95559)
    4: 0.853195 ( 6993771)    5: 0.842495 ( 2786923)    6: 0.841450 (  520424)
    7: 0.838244 ( 3505654)    8: 0.827143 (  537426)    9: 0.826019 ( 2777933)
   10: 0.816170 (   92170)
			

Comments:

The top structure is the correct one.


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