2014年8月14日 · There are 3 main ways to arrange bicyclic rings: fused, bridged bicyclic, and spiro. Here we’ll focus on “bridged bicyclic” compounds & how to name them.

Fused and bridged bicyclic compounds get the prefix bicyclo, whereas spirocyclic compounds get the prefix spiro. In between the prefix and the suffix, a pair of brackets with numerals denotes the number of carbon atoms between each of the bridgehead atoms.

The common atoms connecting the rings in a bicyclic compound are called bridgehead carbons: Bicyclic compounds are in turn divided into fused– and bridged bicyclic compounds. It is fused when the bridgehead carbon atoms are adjacent and bridged when they not.

There are three main ways that the two rings can be connected. The first is called a fused bicyclic ring structure where the two rings share a covalent bond and a have two bridgehead carbons (marked in red on the structures below). A bridgehead is defined …

2019年2月13日 · There are three ways to join two rings. If two rings share two or more atoms, then the structure is called a bicyclic compound. If the two rings share a single atom, then the structure is called a spirocyclic compound. Examples of each way to join rings is shown below. Fused rings share two adjacent carbon atoms.

2014年9月2日 · In bridged bicyclic molecules, the two bridgeheads are separated by “bridges” containing at least one carbon. In “spiro” fused molecules, the two rings are both joined at the same carbon.

To name bicyclic compounds, it's crucial to identify the number of atoms in each bridge, the connectivity of the rings, and the overall carbon count. This section will cover the basic rules for naming bicyclic compounds, the identification of bridgehead atoms, …