{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

01_handout

01_handout - • If there is a multiple bond then each...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Massachusetts Institute of Technology 5.43: Advanced Organic Chemistry Cahn-Ingold-Prelog convention Tetrahedral/sp 3 stereocenters: R or S Step 1: Assign priorities to substituents, giving higher priority to atoms of higher atomic number (e.g., S > O > N > C > H) If there is a "tie," then compare the substituents attached to the groups in question.
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: • If there is a multiple bond, then each formal bond is counted once. • Lone pairs have atomic number 0. Step 2: Place the lowest priority substituent in back. If the other three substituents decrease in priority in: • a clockwise direction ⇒ R • a counterclockwise direction ⇒ S 1 2 3 4 1 3 2 4 1 3 2 1 2 3 R S...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online