98.0k views
1 vote
how do you draw this structure (r)-2-bromopentane i numbered them and it went counterclockwise in standard

User HugoShaka
by
8.3k points

1 Answer

0 votes

Answer: To draw ®-2-bromopentane counterclockwise, you would need to follow the R-S sequence rules.

Explanation: First, assign priorities to each of the four groups attached to the chiral center based on their atomic number. In this case, the priority order would be Br > C > C > C.

Next, orient the molecule so that the lowest priority group (in this case, one of the carbons) is pointing away from you. Then, draw an arrow from the highest priority group (in this case, Br) to the second-highest priority group (one of the carbons), and then to the third-highest priority group (the other carbon). If this arrow goes counterclockwise, then the configuration is S. If it goes clockwise, then it is R.

Since you are looking for a counterclockwise configuration, you would need to draw the arrow so that it goes counterclockwise. This would result in an S configuration for ®-2-bromopentane.

Hope this helps, and have a great day!

User Idanz
by
7.6k points