Draw the following incorrectly named compounds and name them correctly. a. 2 -ethyl-3-methyl-5-isopropylhexane b. 2-ethyl-4-tert-butylpentane c. 3 -methyl-4-isopropylpentane d. 2 -ethyl-3-butyne

First, let's draw the structure of the compound based on the given incorrect name: 1. Draw a 6-carbon chain (hexane). 2. Attach an ethyl group (2 carbons) to the 2nd carbon. 3. Attach a methyl group (1 carbon) to the 3rd carbon. 4. Attach an isopropyl group (3 carbons; central carbon attached to two methyl groups) to the 5th carbon. Now, let's name the compound correctly following the IUPAC rules: 1. Identify the parent chain: Count the carbons in the chain, it has 7 carbons, so the parent chain is heptane. 2. Number the carbons in the chain by starting from the end nearest to any of the substituents. 3. Assign numbers to substituents accordingly. 4. Write the correct name by listing the substituents in alphabetical order with their respective numbers. Hence, the correct name for the given compound is 3-ethyl-4,4-dimethyl-6-ethylheptane.

First, let's draw the structure of the compound based on the given incorrect name: 1. Draw a 5-carbon chain (pentane). 2. Attach an ethyl group (2 carbons) to the 2nd carbon. 3. Attach a tert-butyl group (4 carbons; tertiary carbon attached to three methyl groups) to the 4th carbon. Now, let's name the compound correctly following the IUPAC rules: 1. Identify the parent chain: Count the carbons in the chain, it has 6 carbons, so the parent chain is hexane. 2. Number the carbons in the chain by starting from the end nearest to any of the substituents. 3. Assign numbers to substituents accordingly. 4. Write the correct name by listing the substituents in alphabetical order with their respective numbers. Hence, the correct name for the given compound is 3-ethyl-2-tert-butylhexane.

First, let's draw the structure of the compound based on the given incorrect name: 1. Draw a 5-carbon chain (pentane). 2. Attach a methyl group (1 carbon) to the 3rd carbon. 3. Attach an isopropyl group (3 carbons; central carbon attached to two methyl groups) to the 4th carbon. Now, let's name the compound correctly following the IUPAC rules: 1. Identify the parent chain: Count the carbons in the chain, it has 6 carbons, so the parent chain is hexane. 2. Number the carbons in the chain by starting from the end nearest to any of the substituents. 3. Assign numbers to substituents accordingly. 4. Write the correct name by listing the substituents in alphabetical order with their respective numbers. Hence, the correct name for the given compound is 3,3-dimethyl-5-ethylhexane.

First, let's draw the structure of the compound based on the given incorrect name: 1. Draw a 4-carbon chain with a triple bond between the 3rd and 4th carbon (butyne). 2. Attach an ethyl group (2 carbons) to the 2nd carbon. Now, let's name the compound correctly following the IUPAC rules: 1. Identify the parent chain: Count the carbons in the chain, it has 5 carbons, so the parent chain is pentyne. 2. Number the carbons in the chain by starting from the end nearest to the triple bond. 3. Assign numbers to substituents accordingly. 4. Write the correct name by listing the substituents in alphabetical order with their respective numbers. Hence, the correct name for the given compound is 4-ethyl-2-pentyne.