122.5 ppm 150.5 ppm- mesityl oxide

Q: Which electrophile is most likely to undergo a 1,2-hydride shift during an electrophilic aromatic…

A: In electrophilic aromatic substitution of benzene in presence of AlCl3. First of all the alkyl…

Q: What two carbonyl compounds are needed to synthesize each of the following compounds, using a…

A: (a)

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: Esters have two unique sides.  When looking at an nmr spectrum the hydrogens alpha to the carbonyl…

A: Esters have two NMR active Hydrogens 1) Alpha to Carbonyl Carbon 2) Alpha to Oxygen atom of Ester…

Q: Show the effect of conjugation on the carbonyl absorption in an IR spectrum ?

A: Concept introduction: Conjugation is arises due to the presence of alternative double or triple bond…

Q: 9a) The proton bonded to the carbon adjacent to the carbonyl group in the following compound can be…

A: Chiral Centre: atom which is bonded with  four different atoms /groups is called chiral Centre

Q: Orsellinic acid, a common constituent of lichens, is synthesized from the condensation of acetyl…

A:

Q: CH3 нн エ -エ、 エエ

A: As the given base is LDA i.e. Lithium diisopropylamide. It is a bulky base which favours the…

Q: For the given 13C NMR chemical shifts of the carbonyl carbons in the order of ketones > aldehydes >…

A: Please find the below attachment.

Q: Describe how an electron donating group on an aromatic ring affects the proton chemical shifts of…

A: Since your question has multiple parts, we will answer the first question for you. If you want…

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: If the following sesquiterpene is synthesized in a medium containing acetate with a 14C-labeled…

A: The terpenes undergo biosynthesis reaction, which follows HMG-CoA reductase pathway. IN this…

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: Although the carbonyl absorption of cyclic ketones generally shifts to higher wavenumber with…

A: Since the cyclopropenone can act as a aromatic compound when the double bond C=O acts as +C-O- as…

Q: According to the 13C NMR what is the major product of this reaction? H H3CH2CCH2CH3 H20 H. cat.…

A: The predicted major product for this given transformation is an alcohol and position of substitution…

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

A: The reaction between racemic mixture of 2 -phenylpropanoic acid with (R) -sec-butylamine is an acid…

Q: What would be the major difference between the IR spectrum of your aldol product and an IRspectrum…

A: The aldol condensation of Vanillin and acetone is given below.

Q: Which of the following statements about an -NH2 group is FALSE? a. meta director b. activator…

A:

Q: Draw the structure(s) of the major neutral organic product(s) obtained after workup of the following…

A: N,N-dimethylaniline on treatment with 1 equivalent of bromine in acetic acid produces a product that…

Q: How many 1H NMR signals does each alkene exhibit?

A:

Q: The ketone whose 1H NMR spectrum is shown here was obtained as the product of an acetoacetic ester…

A:

Q: 14. Explain why pyrrole is an electron-rich heterocycle that is activated toward electrophilic…

A: In case of pyrrole, the l.p. present on N atom is heavily delocalized into the ring to maintain…

Q: How many signals would the product of the following reaction show in a. its 1H NMR spectrum?…

A: The expected product for the given reaction is shown below.

Q: 14. Why is the nitro group a meta director? A. Because it is sterically very large. B. Because it…

A: Since you have posted two different questions. According to guidelines I am solving 1st question.If…

Q: Which of the following carbonyl compounds has the most acidic hydrogen? Show why it has the most…

A: The acidic hydrogen means the hydrogen atom which will easily release from the compound and form…

Q: How does anisole as a director and acetic anhydride as an acylating agent affect the…

A: Acylation of anisole selectivity determined by steric effect.

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: 4. What is major product of the reaction sequence shown in the box? – 13C NMR: 6 signals. CH3 IBX…

A: 2-Iodoxybenzoic acid (IBX) is an oxidizing agent used for the oxidation of several functional…

Q: Rank the following compounds in order of increasing basicity: L p-nitroaniline H.…

A: Basicity of a molecule is the tendency to donate the lone pair of electrons. Electron withdrawing…

Q: When acetonitrile is treated with concentrated sulfuric acid and tert-butanol, followed by water, a…

A: The given reaction is,

Q: `NH HNO3 `NH H2SO4 NO2 Acetanilide para-Nitroacetanilide

A: We have to draw two alternative isomers of nitroacetanilide and suggest two reasons why, during this…

Q: Bicyclic ketone A rapidly equilibrates with a stereoisomer upon treatment with strong base, but…

A: The given ketones are represented as follows:

Q: What is the effect of an electron-donating group (here: EtO-C,) attached to C, in the structure…

A: Please find the answer below.

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: What is the major product generated when p-t-butyl aniline undergoes Friedel-Crafts alkylation…

A:

Q: Consider the para-substituted aromatic ketones, NO2C6H4COCH3 (p-nitroacetophenone) and CH3OC6H4COCH3…

A:

Q: Q. Explain the following observation 1. Aldehyde group (-CHO) act as a meta director and…

A:

Q: With reference to amides A and B, the carbonyl of one amide absorbs at a much higher wavenumber in…

A: The carbonyl groups with amide in it generally shows signal in IR spectrum at 1630-1680 cm-1. This…

Q: Why is the nitro group a meta director? Select one: O a. Because it adds electron density to the…

A: 1. Nitro is electron withdrawing group. It will remove electron density from o, p positions.…

Q: Rank the following compounds in order of increasing frequency of the carbonyl absorption.

A: The spectroscopy which deals with the measurement of the interaction of infrared radiation with…

Q: Using ChemDraw Predict 1H NMR spectra of acetophenone and the protonated acetophenone

A: Using chem draw we easily predict 1H NMR and 13C NMR. This helps us to cross-check obtained spectra.

Q: The treatment of isoprene [CH2=C(CH3)CH=CH2] with one equivalent ofmCPBA forms A as the major…

A: mCPBA acts as an epoxide agent when reacts with alkene and converts the alkene into an epoxide ring.…

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: Reaction of p-cresol with two equivalents of 2-methylprop-1-ene affordsBHT, a preservative with…

A: The phenol functional group in a molecule is depicted as Ar-OH, where the Ar group refers to the…

Q: Benzene underwent a Friedel–Crafts acylation followed by a Wolff–Kishner reduction. The product gave…

A:

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: OH OH CH

A:

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: Benzene underwent a Friedel–Crafts acylation followed by a Wolff–Kishner reduction. The product gave…

A: Friedal crafts acylation is the acylation of aromatic rings using acid halides such as acid…

Q: According to 13C NMR spectrum, what is a major product of the reaction shown in the box? Br C2H5ONA…

A: The major product with E2 elimination mechanism is shown in step 2.

NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.