CHAPTER 8 NOTES

CHAPTER 8 NOTES - CHAPTER 8 ALKENES & ALKYNES :...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 8 ALKENES & ALKYNES : REACTIONS - - INTRODUCTION - - REGIOCHEMISTRY : MARKOVNIKOV’S RULE - - ADDITION OF : Br 2 , Cl 2 - - OXIDATION - - CARBENES - - SYNTHETIC STRATEGIES
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
INTRODUCTION: ADDITION REACTIONS : A - B > C = C < à > C A – C B < sp 2 ? ? ? ALKENES A - B A - B – C C – à – C A = C B à – C A 2 – C B 2 sp ? ? ? ? ? ALKYNES (ALKYNES : TWO π BONDS: ADD 2 A B ) WHY ? HOW ? - - THE π BOND IS EASILY BROKEN - - SO ? - - IS ADDITION LIKELY TO BE ENDO THERMIC OR EXO THERMIC ? - - ALKENES & ALKYNES CAN ACT AS e RICH SPECIES ( i.e., LEWIS ACID OR BASE ? ) - - SO ? - - LIKELY TO REACT WITH : e RICH SPECIES ? OR e POOR SPECIES ? ELECTROPHILIC ADDITION REACTIONS
Background image of page 2
ADDITION OF H X : - - CONSIDER THE FOLLOWING EXAMPLE : REGIOCHEMISTRY: - - HOW TO PREDICT WHICH PRODUCT IS LIKELY TO BE THE MAJOR PRODUCT ? H H H H I OR H H H H I H H H I H
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
- - APPLY MARKOVNIKOV’S RULE : A + B + > C = C H à > C B – C H A (MAJOR) cf. A , B cf. # H > C A – C H B ( A B ) AT (MINOR) THE TWO sp 2 CARBONS EXAMINE: WHICH CARBON ADDS A WHICH CARBON ADDS B IMPLICATIONS ? - - IN GENERAL, UNSYMMETRICAL REAGENT ( A + B ) + UNSYMMETRICAL ALKENE / ALKYNE A + : PREFERENTIALLY ADDS TO THE CARBON HAVING MOST HYDROGENS B : ?
Background image of page 4
WHY THIS REGIOCHEMISTRY ? -
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/14/2008 for the course CHEM 2370 taught by Professor Dandekar during the Fall '07 term at North Texas.

Page1 / 14

CHAPTER 8 NOTES - CHAPTER 8 ALKENES &amp; ALKYNES :...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online