Reaction of 2-methylpropanoic acid [ ( CH 3 ) 2 CHCO 2 H ] with SOCl 2 followed by 2-methylpropan-1-ol forms X . X has a molecular ion at 144 and IR absorptions at 2965, 2940, 1739 cm − 1 . Propose a structure for X .
Reaction of 2-methylpropanoic acid [ ( CH 3 ) 2 CHCO 2 H ] with SOCl 2 followed by 2-methylpropan-1-ol forms X . X has a molecular ion at 144 and IR absorptions at 2965, 2940, 1739 cm − 1 . Propose a structure for X .
Solution Summary: The author explains the possible structure of X. The molecular ion is formed by ejection of electrons from a molecule.
Reaction of 2-methylpropanoic acid
[
(
CH
3
)
2
CHCO
2
H
]
with
SOCl
2
followed by 2-methylpropan-1-ol forms
X
.
X
has a molecular ion at
144
and IR absorptions at
2965, 2940, 1739 cm
−
1
. Propose a structure for
X
.
2H2S(g)+3O2(g)→2SO2(g)+2H2O(g)
A 1.2mol sample of H2S(g) is combined with excess O2(g), and the reaction goes to completion.
Question
Which of the following predicts the theoretical yield of SO2(g) from the reaction?
Responses
1.2 g
Answer A: 1.2 grams
A
41 g
Answer B: 41 grams
B
77 g
Answer C: 77 grams
C
154 g
Answer D: 154 grams
D
Part VII. Below are the 'HNMR, 13 C-NMR, COSY 2D- NMR, and HSQC 2D-NMR (similar with HETCOR but axes are reversed) spectra of an
organic compound with molecular formula C6H1003 - Assign chemical shift values to the H and c atoms of the
compound. Find the structure. Show complete solutions.
Predicted 1H NMR Spectrum
4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1
f1 (ppm)
Predicted 13C NMR Spectrum
100
f1 (ppm)
30
220 210 200 190 180
170
160 150 140 130 120
110
90
80
70
-26
60
50
40
46
30
20
115
10
1.0 0.9 0.8
0
-10
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