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Chapter 7: Q36E (page 219)

Question: Loratadine, marketed as an antiallergy medication under the name Claritin, has four rings, eight double bonds, and the formula C22H?CIN2O2 . How many hydrogens does loratadine have? (Calculate your answer; don鈥檛 count hydrogens in the structure.)

Short Answer

Expert verified

Answer

The number of hydrogens in loratidine is 23.

Step by step solution

01

Number of hydrogens in a compound

The count of hydrogens in a particular compound can be identified from the degree of unsaturation. It can be found from the formula:

Degree of unsaturation =2C + 2 + N - H - X2

02

Number of hydrogens in loratadine

Loratidine has four rings and eight double bonds. The number of hydrogens in loratadine can be found from the degree of unsaturation as:

Degree of unsaturation =2C + 2 + N - H - X212=2脳22+2+2-x-1212=47-x2

On further solving:

12=47-x224=47-xx=47-24=23

Hence, the number of hydrogens in loratidine is 23.

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Most popular questions from this chapter

Change the following old names to new, post-names, and draw the structure of each compound: 2,3-Dimethyl-1,3-cyclohexadiene

Which of the following compounds can exist as pairs of cis-trans isomers? Draw each cis-trans pair, and indicate the geometry of each isomer.CH3CH=CH2

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Question: Rank the following sets of substituents according to the Cahn鈥揑ngold鈥� Prelog sequence rules: 鈥�

Rank the substituents in each of the following sets according to the sequence rules:

-CH3,-CH2CH3,-CH=CH2,CH2OH
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