Ch13A_new - Spring2011 CHEM224 Akira Kawamura Chapter 13A:...

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

View Full Document Right Arrow Icon
Spring2011 CHEM224 Akira Kawamura Chapter 13A: Conjugated Unsaturated Systems A. Overview Today’s main goals: (1) Chemistry of allylic position, (2) Definition of conjugated systems Why important? (1) Allylic position has unique chemical reactivity that is frequently used in organic chemistry, (2) Conjugated systems have distinct spectroscopic and chemical properties. Key points: Allylic position: Why special? (13.3-13.5) Allylic halogenations (13.2) Cl 2 heat Cl NBS, CCl 4 ROOR or light Br N -bromosuccinimide (NBS) Br N O O (a) (b) Conjugated multiple bonds (13.6) s-trans s-cis B. Problem session (13.2) Draw the initiation, propagation, and termination steps of the following free radical reaction. Cl 2 Cl (13.2) What are the structures of A and B ?? NBS, CCl 4 h ν A (C 6 H 9 Br) B KOC(CH 3 ) 3 HOC(CH 3 ) 3 (C 6 H 8 ) (13.2-13.3) Propose the synthesis of target molecule (TM) from the designated starting materials (SM) and any necessary reagents. from
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/06/2011 for the course CHEMISTRY 104,224 taught by Professor Stevens,kawamura during the Spring '11 term at CUNY Hunter.

Ask a homework question - tutors are online