How can I draw the following amides: N-ethylbutanamide, N-propylpentanamide, N,3-dimethylhexanamide?
You draw the base structure, then you add the substituents in the appropriate locations.
1. N-Ethylbutanamide
The base name tells you that this molecule has a four-carbon chain with an amide group.
Its skeleton structure is
The carbonyl group is automatically
A substituent on the
In this case, we have an ethyl group on the
atom.
The structure is
atom and another methyl group on
The structure is
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To draw the structures of the given amides, start by drawing the parent alkane chain corresponding to the number of carbon atoms indicated in the name. Then, attach the amide functional group (-CONH2) to the appropriate carbon atom, replacing one hydrogen atom. Finally, add the substituents (ethyl, propyl, or dimethyl) to the nitrogen atom as specified in the name. Ensure that the molecular formula and connectivity of atoms are correct.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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