If you lost a double bond but gained a cyclic ring what would you see in IR?

Q: Does it matter if you use cis or trans stilbene as a starting material? Would this give you the same…

A: Cis- and trans-isomerisation of stilbene can take place as photo-chemical isomerisation.

Q: Could you help provide a complete curved arrow mechanism for this transformation?

A:

Q: What do you stereodifferentiating reaction ? What is chiral auxiliary? How they can help to achieve…

A: A double stereo differentiating reaction generally implies the reaction of two homochiral ligands, a…

Q: Select the member of each pair that shows the greater rate of SN2 reaction with KI in acetone.

A:

Q: When styrene is protonated as shown, on which carbon will the carbocation initially form?

A: Protonation occurs in such a way that a stable carbocation intermediate is formed. The stability of…

Q: Please state which is the main product when 2-methylbuta-1,3-diene reacts with one equivalent of HBr…

A:

Q: e) How does ring strain affect the carbonył stretching for cyclic ketonęs of different ring sizes?

A:

Q: III.

A: The reaction shows [1,5]-sigmatropic rearrangement. Though conjugated double bond there is 1,5-…

Q: Nhich of the following statements correctly describes the molecule shown pelow? ... (A It is a meso…

A:

Q: Cogme CO̟Et (Dienephile)

A: The given compound is an methyl ester of acetylene .it can be named as below

Q: Show how to convert cyclopentene into Iodocyclopentane  compound

A: Cyclopentene is a five membered ring containing one double bond. Like all the alkenes,it also has…

Q: For the given below ee values, calculate the percentage of each enantiomer present.         60% ee

A: Constitutional isomers can be defined as the molecules which have the same molecular formula and…

Q: Draw all of the constitutional isomers of octane. For each isomer: 1. State the number of different…

A:

Q: (a) Draw the arrow-pushing mechanism between isoprene and MVK that leads to the major regioisomer…

A: a) The mechanism of the reaction that leads to the formation of major product is as follows:

Q: The central carbon atom of an allene is a member of two double bonds, and ithas an interesting…

A: Given: Two enantiomers of penta-2,3-diene.

Q: Complete the mechanism for the following mixed Claisen condensation by adding any missing atoms,…

A:

Q: Why would a meso form of 1,2-dibromo-1,2-diphenylethane form?

A: A meso compound is that non optically active isomer which has chiral centers. That means, despite of…

Q: Which group in the following pair is assigned the higher priority in R,Snomenclature     −CD3, −CH3

A: Cahn-Prelog-Ingold rule Cahn-Prelog-Ingold rule is used for naming enantiomer and diastereomers It…

Q: Fill in the blanks: The difference in energy between benzene and 1,3,5-Cyclohexatriene is called The…

A: The difference in energy between benzene and 1,3,5-Cyclohexatriene is called :-  delocalization…

Q: Explain how substituents on thearomatic ring promote substitutionat some positions but not at others

A: Two types of groups can be present on aromatic ring  a) electron donating groups like -NH2, -OH, -OR…

Q: CN and ČN

A: Diaxial interaction (1,3-diaxial interaction): An interaction (usually repulsive) between two axial…

Q: In which case is the indicated unshared pair of electrons not a contributor to the n aromatic…

A: In the following compound the unshared pair of electron do not  contribute the π aromatic system.

Q: Question - Highlight isoprene units in each of the molecules below:

A:

Q: For the following pair of carbocations (A and B), select the one that is more stable and explain…

A:

Q: Answer the following question for 1,3,5- hexatriene, the conjugated triene containing six carbons.…

A:

Q: Determine the absolute Configuration (Rors) of the Stereogenic centre in compounds (i) and (ii)

A:

Q: Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the…

A: Concept:  Bromination of Alkene: The reaction mechanism for an alkene bromination follows two steps.…

Q: Draw the structure of 2-bromo-4-methylaniline in the window below.

A: Here we are required to structure of 2-bromo-4-methylaniline.

Q: . Provide a curved arrow mechanism for the transformation below. OCH3 Br2 enantiomer Br CH3OH

A: addition of Br2 to alkene leading to the formation of a cyclic intermediate stage.  attack of…

Q: How useful is the (R) or (S) designation for predicting the sign of an optical rotation? Can you…

A: Here, un this question, we have to discuss wheather the R/S -nomenclature and the sign of optical…

Q: Which group in the following pair is assigned the higher priority in R,Snomenclature −CH2NH2, −NHCH3

A: The carbon atom containing four different groups is called Chiral centre. Each chiral centre can be…

Q: The creation of very large ring systems is often difficult and challenging. The following…

A:

Q: Will ring formation predomiate this reaction?

A: Intramolecular nucleophilic substitution :  If there is chance to form 5 (or) 6 memebered ring…

Q: Select the member of each pair that shows the greater rate of SN2 reaction with KN; in acetone. Set…

A: The nucleophilic substitution reaction of the leaving group (which usually consists of halide groups…

Q: Which of the following is not true about ring inversion? a. The bulkiest substituent groups are in…

A: Cyclic molecules are flexible and it can undergo ring flipping readily. Cyclohexane is the most…

Q: 8. Determine the glement of unsaturation from the compounds or formulas below А. В.

A:

Q: Which group in the following pair is assigned the higher priority in R,Snomenclature −CH2Cl,…

A: R,S nomenclature is important in organic chemistry.

Q: What hydrocarbon (hydrogen and carbon only) formula would you use to start this problem? How many…

A: Using the following formula no.of unsaturation can be calculated  1. For compound with carbon,…

Q: .. For the triene shown, how many double bonds are conjugated?

A:

Q: Select the member of each pair that shows the greater rate of SN2 reaction with KI in acetone.

A: SOLUTION: Step 1: The given compounds are 1) 2-bromo pentane              2) 2-bromo-3-methylbutane.…

Q: 6. Draw a detailed arrow pushing mechanism for the following transformations: srl NaOCH3 SN2 Br +…

A: SN2 reaction proceeds with the backside attack of the nucleophile on the alkyl halide which results…

Q: double

A: In ethane, both the carbon atoms are sp2 hybridized

Q: Consider the following electrocyclic ring closure. Does the product form by a conrotatory or…

A: The starting material has three conjugated double bonds and which proceeds electrocyclic ring…

Q: (d) Complete the following reaction: hv (i) Cp2TiMe2 +2 [RCH=CHR] AlMez (ii) [Cp*Ir"Cl}]2 (iii)…

A: NiCl2(PMe3)2 + RMgCl → ?

Q: What is the unsaturation number (degree of unsaturation) for this compound?

A: Organic compounds are majorly made up of carbon atoms. There are different functional groups present…

Q: How many degrees of unsaturation are present in the following structure? Your answer should be a…

A:

Q: How many rings are present in C8H15N3? This compound consumes 2 mol of H2 on catalytic…

A:

Q: 4. Which do you think is more chemically stable, the reactants or products of each of the reactions…

A: As all the above process result in production of energy it means all reaction are exothermic.

Q: Using one of the templates provided below, draw the conformation that has the maximum energy for…

A:

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.