Which of the following organic compounds have both 2 carbon environments and 2 hydrogen environments?单项选择题
A
a. CH3CHBr2
B
b. BrCH2CH2Br
C
c. HOCH2CH2OH
D
d. CH3CH2OH
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类似问题
A 1H NMR spectrum shows three signals and the 13C NMR spectrum shows two signals for an unknown compound. A possible structure for this compound is:
Question textIn this experiment, you will use two different alcohols which are isomers of one another, 3-methyl-2-butanol and 2-methyl-2-butanol (shown below). Identify the number of protons and the expected splitting patterns for the assigned chemical environments. The E1 environment contains Answer 1 Question 11[input] protons and would appear with a splitting pattern of a Answer 2 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E2 environment contains Answer 3 Question 11[input] protons and would appear with a splitting pattern of a Answer 4 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E3 environment contains Answer 5 Question 11[input] protons and would appear with a splitting pattern of a Answer 6 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E4 environment contains Answer 7 Question 11[input] protons and would appear with a splitting pattern of a Answer 8 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E’1 environment contains Answer 9 Question 11[input] protons and would appear with a splitting pattern of a Answer 10 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E’2 environment contains Answer 11 Question 11[input] protons and would appear with a splitting pattern of a Answer 12 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E’3 environment contains Answer 13 Question 11[input] protons and would appear with a splitting pattern of a Answer 14 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet].
Question textIn this experiment, you will use two different alcohols which are isomers of one another, 3-methyl-2-butanol and 2-methyl-2-butanol (shown below). Identify the number of protons and the expected splitting patterns for the assigned chemical environments. The E1 environment contains Answer 1 Question 11[input] protons and would appear with a splitting pattern of a Answer 2 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E2 environment contains Answer 3 Question 11[input] protons and would appear with a splitting pattern of a Answer 4 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E3 environment contains Answer 5 Question 11[input] protons and would appear with a splitting pattern of a Answer 6 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E4 environment contains Answer 7 Question 11[input] protons and would appear with a splitting pattern of a Answer 8 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E’1 environment contains Answer 9 Question 11[input] protons and would appear with a splitting pattern of a Answer 10 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E’2 environment contains Answer 11 Question 11[input] protons and would appear with a splitting pattern of a Answer 12 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet]. The E’3 environment contains Answer 13 Question 11[input] protons and would appear with a splitting pattern of a Answer 14 Question 11[select: , doublet, singlet, triplet, quartet, pentet, sextet, septet, octet].
A 1H NMR spectrum shows three signals and the 13C NMR spectrum shows two signals for an unknown compound. A possible structure for this compound is:
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