GOC - Stereochemistry - Reaction Mechanism

Amongst the following, the compound which has the lowest energy barrier for the cis-trans isomerization is?

The order of basicity among the following compounds is?
   

Which of the following is the most stable conformer of the following molecule?

In the given chemical reaction, major product will be?

Following reaction goes through:

The correct relation between the following compounds is:
  

The major product formed in the following reaction is:

Major product will be?

Among the choices, the correct statements for A formed in the following reaction.
 

The gauche interaction values for Me/Me, Me/Br, and Br/Br are 3.3, 0.8 and 3.0 kJ/mol, respectively. Among the following, the most stable conformation of 2, 3-dibromobutane is:

For each of the following pairs of compounds, which is having second compound more stable than first compound:

Choose the correct product of the following reaction:          

Arrange the following in correct stability order:
  

Lindane (hexachlorocyclohexane) is an agricultural insecticide that can also be used in the treatment of head lice.
   

Draw the other chair conformation (B) of Lindane and inspect which of the following statements are correct.

The increasing order of pK_a values of the circled hydrogen in the following compounds is?

  

1, 2, 3, 4, 5, 6-hexamethylcyclohexane has 8 cis/trans stereoisomer. Which stereoisomer would be least likely to undergo conformation flipping?

The major product formed in the following reaction is:

The major product of the following reaction is:

The absolute configuration for compounds X and Y respectively are:
  

The major product X and Y of the following reaction sequence are:

Arrange the following compounds in order of Ca—Cb bond length:

Among the following, the Newman projections of meso-2, 3-butanediol are:

Among A-C, the compounds which can exhibit optical activity are:

The correct order of acidity values of circled protons (in the following compound) will be?

Choose the correct product of the following reaction:

  
In the given chemical reaction, SOCl₂ will react at:

For the given reaction,

What should be the percentage of backside attack assuming complete reaction?           

Which of the following compound(s) has/have zero dipole moment:

Which of the following molecule(s) is/are anti-aromatic in nature:

Which of following is Z isomer?

The amount of optical rotation [a] depends on:           

Which of the following is/are correct in reference to the indicated property?

Which of the following statement(s) is/are true about the reaction given below?

Among the following, reaction(s) which gives tert-butyl benzene as the major product is/are:

Which one of the following carboxylic acids dose not undergo decarboxylation easily?

Racemic mixture formed among these reactions is(are):

The reaction(s) in which α-diazoketone can be sythesized?

The total number of cyclic isomers possible for a hydrocarbon with the molecular formula C₄H₆ is:

An aqueous solution of an optically pure compound of concentration 100 mg in 1 ml of water and measured in a quartz tube of 5 cm length was found to be –3°. The magnitude of specific rotation is:

Consider the following reaction sequence:





The overall yield for the formation of p-hydroxyacetanilide and o-hydroxyacetanilides from phenol is____? [Provide combined value from both the yields]

Among the following, the number of aromatic compound(s) is:



   

Double bond equivalent in cubane is:

How many number of reaction/s form Benzyne intermediate:

Reaction of 11.6 g of the aldehyde A with 462 mg of Wilkinson's catalyst provided 9.2 g of alkene B. The mole % of the catalyst used is ‘X’ and the yield of the reaction is ‘Y’. What is the value X+Y?

In morphine molecule, number of centers having ‘R’ configuration:

X = Number of alkene which give chiral product on reductive ozonolysis:


  

Number of sp² carbon in final product:

Among the following, the number of molecules that possess C₂ axis of symmetry is…………….:

CHCl₃ : 2, 5-dimethylthiophene

Among the following compounds, how many compound(s) are more reactive towards electrophilic substitution reaction than compound ‘A’?

If μ_net of cyclohexane-1, 4-dione is 1.2 D. and the mole fraction of chair conformer is 0.8, then find the dipole moment of twist boat. (in Debye)

The total number of chiral molecules:
​

How many equivalents of PCl₅ will be utilized in the given reaction?

x = Number of compound give 3° alcohol when reacts with HNO₂/HCl?

How many are correctly labbelled w.r.t. absolute configuration?

The number of possible stereoisomers obtained in the following reaction is:

The antidepressant fluoxitene (Prozac^TM) C₁₇H₁₈F₃NO, when treated with H₂/Ni gives a structure with molecular formula C₁₇H₁₈F₃NO. It contains on triple bonds. How many rings are in fluoxitine?

The total number of stereoisomers of C₄H₈O₃ which evolve CO₂ with NaHCO₃(aq):