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Question

The maximum number of stereoisomers possible for the compound given below is ________ 

The maximum number of stereoisomers possible for a compound is determined by the formula 2n, where n is the number of stereocenters. A stereocenter is typically a carbon atom bonded to four different groups. Let's analyze the given compound.

1. **Identify Stereocenters:** 
 a. The compound contains two carbon atoms attached to the central ring system that can serve as stereocenters. Both have four different substituents:
  i. The carbon with the methyl (Me) group adjacent to the carbonyl group 
  ii. The carbon with the nitro (NO2) group on the benzene ring.

2. **Calculate Maximum Stereoisomers:**
 a. With n = 2 stereocenters, the maximum number of stereoisomers = 22 = 4.

3. **Verify Range:** 
 a. The calculated number of stereoisomers is 4, which fits the provided range of 4,4.

Therefore, the maximum number of stereoisomers possible for the given compound is 4.

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Important Questions from Stereochemistry

  1. The specific rotation of enantiomerically pure (S)-2-butanol is $+14^\circ$. The specific rotation of enantiomeric mixture of 2-butanol obtained from an asymmetric reduction of 2-butanone is found to be $+7^\circ$. The percentage of (R)-2-butanol present in the reaction mixture is ________ (in integer).

  2. In the following reaction, 13.4 grams of aldehyde P gave a diastereomeric mixture of alcohols Q and R in a ratio of 2:1. If the yield of the reaction is 80%, then the amount of Q (in grams) obtained is ________ (in integer).

  3. The correct statement(s) about the relationship for the H-atoms in the following compounds is (are):

  4. The number of possible stereoisomers for cyclononene is ______________

  5. Hydration of fumaric acid gives malic acid as shown below. Assume that addition of water takes place specifically from A face or B face. The correct statement pertaining to stereochemistry of malic acid formed is 

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