1) Rank the following substituents from most electron withdrawing to most electron donating. -Br -NO2 -CI –CH3 -H –N(CH3)2

Q: EN ? 4-

A: The name of the given compound is:

Q: Draw ALL REASONABLE resonance structures and the resonance hybrids of the compounds below. 1. N…

A:

Q: What is the proper relationship of the substituents for the major product (only) of the following…

A: In the given structure amide group is present in the ring. We know amide group is ortho/ para…

Q: Addition of Br2 to (1)-hex-3-ene produces Wameso dibromide Branisture of enantiomeric dibromides…

A: First the structure of (E)-hex-3-ene is as follows,

Q: Using Cahn-Ingold-Prelog rules, rank these substituents from highest priority to lowest priority. II…

A:

Q: Which reaction is not stereospecific? Br,/CCI, trans-2-butene Br,/H2O cis-2-pentene II HBr…

A:

Q: Bromination (Br2 in CCl4) in the presence of light of N-hexane, Cyclohexene, Benzene, Acetelyne, and…

A:

Q: Draw the major product(s) of the following reactions including stereochemistry when it is…

A:

Q: 4. (2 pts) Circle the most stable carbocation and cross out the least stable carbocation among the…

A:

Q: Arrange the following group  in order of increasing priority. Q) -OCH3 -CH(CH3)2 -B(CH2CH3)2 -H

A: The CIP sequence rules are used to assign the R and S configuration. Rule 1: First, select the…

Q: Draw the product of attached thermal electrocyclic ring closure.

A: Electrocyclic ring closure is an intramolecular reaction that produces a cyclic product containing…

Q: В. Н.С C=C CH3 С. Н Н c=c CH,CH3 A. H;C CH3 H H H. H H

A: Higher is the stability of alkene, lower is the heat of hydrogenation. Heat of hydrogenation ∝…

Q: Arrange the following compounds in their ease of undergoing an S,2 reaction: a) СЗСН2СH2-CІ b)…

A: For substitution reaction, nucleophile has to attack from the back side of the leaving group in the…

Q: CH,CH,CHCH,, CH,CH,CH,CH,Br, (CH,),CCH,CH, and CH,CH,CH,CI Br CI

A:

Q: 2. Arrange these carbocations in order of increasing stability. CH2 CH3 -CH3 C. b. a.

A: Stability of carbocation can be compared using hyperconjugation effect. Carbocations with having…

Q: Identify the FALSE statement pertaining to SN1 and SN2 mechanisms: An SN2 reaction will result in an…

A: We have to predict the false statement.

Q: Arrange the substituents in order of decreasing priority when determining E/Z stereochemistry of an…

A: The substituents given are,

Q: CH3 *CH cH2 || C A. B

A: Ans is C

Q: 1,2 addition of Br2 to an alkene results in a _______________. A. alcohol B. vicinyl dihalide C.…

A: 1,2 addition of Br2 to an alkene results in a ?

Q: The compound cyclohex-3-en-1-one can give 2 carbanions. Point out the most stable and the reason?

A:

Q: Rank the following carbocations in order of decreasing stability. Most stable

A: Carbocations are electron-deficient species that are formed by the removal of a hydrogen atom from…

Q: To accomplish a Markovnikov addition of water to an unsymmetrical alkene, with minimal skeletal…

A:

Q: Draw the starting structure that would lead to this major product (and its enantiomer) under these…

A:

Q: Which of the following represents allylic carbocation? CH2 - CH = CH, CH3 - CH = C - CH3 CH3 - CH-…

A:

Q: Draw the product of each thermal electrocyclic ring closure.

A: To draw the product of each thermal electrocyclic ring closure

Q: Draw the products of each SN2 reaction and indicate the stereochemistry where appropriate.

A: (a) (S)-1-chloro-1-duetiro ethane undergoes SN2 with methoxide ion to form (R)- 1-duetiro-1 methoxy…

Q: 3. (S)-3-methoxy-2-methylpentan-2-ol

A:

Q: If this molecule were exposed to one equivalent oi strong acid, to which carbon would the proton mos…

A: Reaction of strong acid with Allen or alkyne is electrophilic addition reaction. We have one alkene…

Q: If the -CH3 group is an activator and an ortho-, para- director (directs the position of the…

A: -CH3 group is an electron-donating group because of the + I effect .

Q: 4. In the following examples (where R represents the rest of the molecule), tell which is the best…

A: A leaving group is the one ,which departs with a pair of e- in heterolytic cleavage. A good leaving…

Q: Which of the following compounds would you expect to bethe most generally reactive, and why? (Each…

A: Given compounds, cyclopropane, cyclobutane, and cyclopentane respectively.

Q: Which of the following sets of substituents are all activating groups in electrophilic aromatic…

A: Answer :

Q: a) CH3 b) CH3 – CH – CH- CH3 CH3 с) СНЗ — СН2 —- CH - СHЗ

A:

Q: 2.4 Rank each set of substituents in order of decreasing influence on electrophilic aromatic…

A: In electrophilic aromatic substitution the ease of reaction decreases with electron withdrawing…

Q: Complete the following reactions (please be aware of regioselectivity): CH3. c=CH2 + a. HBr -> b.…

A: ->HBr give electrophilic addition reaction to double bond. ->Pd/H2 is reducing agent which…

Q: Identify the substituent that would have the highest priority using Cahn-Prelog-Ingold rules. O…

A: CPI (CAHN-PRELOG-INHOLD) RULENJS ACCORDING TO THE MASS OF THE DIRECTLY BONDED ATOM.

Q: Which of the following is the most effective way to stabilize carbocations? a. Zaitzev's rule O b.…

A: Carbocation stablized by electron donating group or resonance when positive charge is in conjugation…

Q: This Diekmann cyclization proceeds through the expected five-membered ring transition state. Draw…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Considering both stereochemistry and regiochemistry, which of the following methods is the best way…

A: Welcome to bartleby !

Q: In the elimination of a vicinal dihalide to yield an internal alkyne, two equivalents of NaNH, are…

A: The hydrogen atom bonded to triple bonded carbon atom in alkyne is acidic hydrogen and can be…

Q: 2 3 4

A: STRUCTURE having more number of hyoerconjugable H are most stable . ALPHA H are those Hydrogens…

Q: CH3 CH3 a. CH;CH,Č=CH, CH;C=CHCH3 or CH2 CH3 b. or

A:

Q: H3C CH3 IBr KO-t-Bu ID HO-t-Bu а. CH3 NaOEt b. Ph-c-Br CH3 c. Show the curved arrow mechanism for…

A:

Q: Electron-withdrawing substituent in benzene ring activated position at: Select one: а. С-2 b. C-2…

A:

Q: predict the major product of the reaction sequence below

A:

Q: Rank the following substituents in order of increasing activation strength: a. -N(CH3)2 b. -CN С.…

A:

Q: Name the following heterocyclic compounds using replacement nomenclature only: N-N H H ? 1. 2- ? 3-…

A: NOTE:  “Since you have posted a question with multiple sub-parts, we will solve first three subparts…

Q: Rank the following in order of increasing reactivity toward electrophilic substitution (start with…

A: Electrophilic substitution will occur in benzene rings whose electron density is increased by the…

Q: NH ? 6- ? 7- 8- 5.

A: A heterocyclic compound or ring structure is a cyclic compound that has atoms of at least two…

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.