Draw the structures that correspond to the following IUPAC names.
(c) (S)-3-fluoropent-1-yne

Guida verificata passo dopo passo

Step 1: Break down the IUPAC name into its components. The name '(S)-3-fluoropent-1-yne' indicates the following: (S) refers to the stereochemistry, 3-fluoro indicates a fluorine atom attached to the third carbon, pent indicates a five-carbon chain, and 1-yne indicates a triple bond at the first carbon.

Step 2: Begin by drawing the parent chain, which is pentane (a five-carbon chain). Replace the single bond at the first carbon with a triple bond to represent '1-yne'.

Step 3: Add the fluorine substituent to the third carbon of the chain. Ensure the fluorine atom is clearly attached to the correct position.

Step 4: Assign stereochemistry to the molecule. The '(S)' configuration means the substituents around the chiral center (the third carbon) must be arranged according to the Cahn-Ingold-Prelog priority rules. Determine the priorities of the groups attached to the chiral center and arrange them accordingly.

Step 5: Verify the structure by ensuring all components of the name are represented: the triple bond at the first carbon, the fluorine at the third carbon, and the correct stereochemistry (S).

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IUPAC Nomenclature

IUPAC nomenclature is a systematic method for naming organic chemical compounds. It provides rules for identifying the structure of a compound based on its name, including the longest carbon chain, functional groups, and stereochemistry. Understanding these rules is essential for translating IUPAC names into chemical structures.

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03:43

The different parts of an IUPAC name

Stereochemistry

Stereochemistry refers to the study of the spatial arrangement of atoms in molecules and how this affects their chemical behavior. The designation (S) indicates a specific configuration at a chiral center, which is crucial for understanding the compound's three-dimensional structure and its potential interactions in biological systems.

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Percorso guidato

1:38

Polymer Stereochemistry Concept 1

Alkynes

Alkynes are a class of hydrocarbons characterized by at least one carbon-carbon triple bond. The name 'pent-1-yne' indicates a five-carbon chain with a triple bond starting at the first carbon. Recognizing the structure of alkynes is vital for accurately drawing their chemical representations and understanding their reactivity.

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