N. N,N-dimethylformamide

Q: An aromatic compound, C9H12  has the following 1H NMR spectrum and a peak at 750 cm-1 in its IR…

A: Aromatic compound represents the presence of benzene ring. A characteristic IR peak at 750 cm-1…

Q: The structure of an ester could either be A or B: CH3 O O CH3 T || -C-OCH3 CH3-C CH3-C-0-C-CH3 CH3…

A: An instrumentational method that is used to determine the structure of a compound by analyzing its…

Q: N-(4-HYDROXY-PHENYL)-PROPIONAMIDE 1H NMR (draw labelled structure)

A: Chemical shift value of a proton depends on the electronic environment. Greater is the electron…

Q: Consider the para-substituted aromatic ketones, NO,CeH,COCH3 (p-nitroacetophenone) and…

A: The structure of p-nitro acetophenone is; The structure of p-methoxy acetophenone: Carbonyl…

Q: Which of the following compounds would give a positive Tollens test? (Remember that the Tollens test…

A: Tollens test is a laboratory test which is used to identify an aldehyde and a ketone. It is also…

Q: NaOH H3CO- + 90% ethanol p-anisaldehyde acetophenone H3CO trans-p-anisalacetophenone

A: Given reaction is the Aldol condensation reaction in the presence of base. In this reaction, a…

Q: A diuretic is a compound that causes increased urination and thereby reduces fluid volume in the…

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Q: An aromatic compound C8H9Br has the following 1H NMR spectrum and a peak at 820 cm-1 in its IR…

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Q: An acid-base reaction of (R)-sec-butylamine with a racemic mixture of 2- phenylpropanoic acid forms…

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Q: Acetic acid has a boiling point of 118°C, whereas its methyl ester has a boiling point of 57°C.…

A: Given information: The boiling point of acetic acid is 118°C and the boiling point of methyl ester…

Q: Label peaks associated with the C=C double bond and the anhydride functionality in IR spectrum:…

A: Peaks in the IR spectrum of any compound represent a particular vibrational stretching of a bond.…

Q: A compound has a 'H NMR signal around & 2.2 ppm. What structural feature is likely to be present in…

A: Given : We have to tell what structural features are present in the molecule.

Q: Reaction of aldehyde D with amino alcohol E in the presence of NaH forms F (molecular formula…

A: The structure of F formed from the following conversion has to be proposed:

Q: Order of increasing boiling point of the following  A) 3-pentanone B) 2-methylcyclopentene C)…

A: The electrostatic forces that exist between the molecules are termed as intermolecular forces. These…

Q: What are the infrared absorption frequency characteristics that would distinguish the following…

A: The inspecting of an unknown compound by its molecular formula is done by calculating the index of…

Q: Chlorpropamidé håš a lohger NH NHCH,CH,CH,CH, NH NHCH CH,CH,CH, Tobutamide Chlorpropamide Which of…

A: Tolbutamide is a first potassium channel blocker, sulfonylurea oral hypoglycemic medication. When…

Q: (a) Which of the following chemical tests can differentiate dibenzalacetone from benzadehyde?…

A: Dibenzalacetone contains ketone functional group  Benzaldehyde contains aldehyde functional group…

Q: 4-Methylaniline Aniline 4-Nitroaniline 4-Methoxyaniline Rank the following compounds from the most…

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Q: Explain why a base can remove a proton from the a-carbon of N,N-dimethylethanamide but not from the…

A: The given amines are represented as follows:

Q: 2 Draw structures to correspond with the following common and systematic names:(a) phenyl formate…

A: a).The given compound is phenyl formate. The molecular formula of phenyl formate is C7O2H6. The…

Q: 1. a. 4-methoxybenzoic acid is less or more polar than 4-methoxyacetophenone? explain why (WITHOUT…

A: More the number of Electronegative  groups like halogens , oxygen , nitrogen  develops the polarity…

Q: 1. LDA CH2CH3 2. CH3CH2CI 2-Chloro-1-phenylpropanone 1-Phenylbutan-1-one…

A: We have given the organic reaction and we have to find the major product of the reaction.

Q: Which of the following is not true regarding the spectra of acetophenone? A. In the 'H NMR, the CH3…

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Q: Show the structures of the missing substance(s) in each of the following acid-base equilibria. a.…

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Q: Dr Robert Pappas teaches that the most common essential oil ketone is: Choose one answer. a. carvone…

A: Here we have to choose one ketone which is most common essential oil ketone-

Q: A diuretic is a compound that causes increased urination and thereby reduces fluid volume in the…

A: The possible stereoisomers have to be shown if the product is chiral. A molecule having the same…

Q: Which of the following compounds will test positive for iodoform? A.) propanal B.) 3-pentanone C.)…

A: Iodoform test is given by only those carbonyl compounds which possess CH3CO- group.

Q: A compound containing one functional group has IR absorption bands at 3300 cm1 (strong, sharp) and…

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Q: Which structure corresponds to the ester compound being referred to based on the following chemical…

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Q: Among the choices shown, which reagents would lead to 3-pentanone from bromoethane? A 1L Cul 2)…

A: A. EtBr in presence of Li/CuI gives Et2CuLi which on reaction with EtOTs gives n-butane.  B. EtBr on…

Q: Based on the following H NMR and IR spectrums, what is the structure of C9H8O4?

A: In the question we have been given the H NMR and IR spectrum of the unknown compound which known…

Q: Predicting the Relative Position of Carbonyl Absorptions Rank compounds A, B, and C in order of…

A: Higher the bond strength higher will be the IR stretching frequency.

Q: A diuretic is a compound that causes increased urination and thereby reduces fluid volume in the…

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Q: 6. Which one of the these tests (2,4-DNP, Tollens, 'H NMR, or IR) would you use to distinguish…

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Q: Identify the compound from the infrared spectra. a) 2-Pyridinecarboxaldehyde  b) Phenol  c)…

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Q: Which functional group has the maximum reactivity toward nucleophilic attack? a) acid chloride b)…

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Q: A compound shows only one peak at 0.9 ppm on its 1H-NMR.  Its IR shows only a strong peak right…

A: One peak at 0.9 ppm on its 1H-NMR indicates the presence of only aliphatic protons. So the molecule…

Q: A diuretic is a compound that causes increased urination and thereby reduces fluid volume in the…

A: The furfurylamine is treated with benzoic acid derivative to form an intermediate.

Q: Predict which compound in each pair has a higher boiling point. Explain your prediction.(a)…

A: Boiling  point of any substance is the temperature at which vapour pressure of a liquid becomes…

Q: 1. LDA Br 1-Phenylethanone 2.

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Q: The 1H NMR spectrum of N,N-dimethylformamide shows three singlets at 2.9, 3.0, and 8.0 ppm. Explain…

A: To explain this, 1) Draw the resonance structure of N,N-dimethylformamide. 2) Check whether rotation…

Q: Identify each solvent as either protic or aprotic. N-ethylethanamine (diethylamine)…

A: Answers are explained below. Definition of the Protic & Aprotic solvent is as follows :

Q: Explain why an optically active solution of (R)-α-methylbutyrophenone loses its optical activity…

A: Optically active compounds rotate the palne polarised light towards right or left. A compound is…

Q: Reaction of aldehyde D with amino alcohol E in the presence of NaH forms F (molecular formula…

A: The structure of F formed from the following conversion has to be proposed

Q: A student performed a series of reactions and obtained the spectral data provided. The reaction…

A: The structure of compound A, B, C and D are needed t be predicted using the given NMR data and the…

Q: 1. What are the possible interferences or complications in detecting and differentiating aldehydes…

A: Aldehyde and  ketone of low  molecular  weight  volatile  compounds.  It involves  two  types…

Q: Explain why a base can remove a proton from the alpha-carbon of N,N-dimethylethanamide but not from…

A: First of all the acidic protons should be analysed in all the three cases and then the impact of…

Q: What peaks are expected in the IR spectrum and NMR (C-NMR and P-NMR) spectrum of triphenyl triethyl…

A: Here we consider the decoupled NMR , where peaks do not further splitted .

Q: Identify each solvent as either protic or aprotic. N-ethylethanamine (diethylamine)…

A: Answer is explained below.

Analyzing and Predicting Spectroscopic Data

The interaction of electromagnetic radiation with the structure of molecules in the sample and their study is referred spectroscopy. Several spectroscopic methods are used to acquire sample information, and these methods are proved to be accurate, fast, and non-destructive. The information obtained about the content and composition of molecules from these spectroscopic methods is called spectroscopic data.