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Basic Principles of Organic Chemistry — Chemistry STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceChemistryBasic Principles of Organic Chemistry3 Marks
Question
Find out all the functional groups present in the following polyfunctional compounds.
a. Dopamine a neurotransmitter that is deficient in Parkinson’s disease.
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b. Thyroxine the principal thyroid hormone.
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c. Penicillin G, a naturally occurring antibiotic
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Answer

i. Functional groups: Phenolic - OH group $( Ar - OH )$ and primary amine $\left(- NH _2\right)$ group are present in dopamine.
ii. Functional groups: Phenolic -OH group (Ar-OH), halide $(-1)$, ether $(Ar-O-Ar)$, primary amine $\left(- NH _2\right)$ carboxylic acid $(- COOH )$ groups are present in thyroxine.
iii. Functional groups: Secondary amide
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carboxylic acid $(- COOH )$, tertiary amide​​​​​​​
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thioether $(R-S-R)$ groups are present in penicillin $G$.

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