A-Level/ Advanced Higher Chemistry course notes. Concise notes summarising the topic of organic synthesis (part 1). Notes are easy to follow and contain a summary of the topic with highlighted key-points and supportive examples where appropriate.
Bond fission is the process of breaking bonds There are two types of bond
fission homolytic and hetero
lytic
Homolytic Fission Heterolytic Fission
Bond breaks I e moves to each Bonds break 2 e move to only
species free radicals formed one species ions are formed
Results in the formation
radicals
of two neutral Results in the formation of two
oppositely charged ions
occurs when each atom retains one Occurs when one atom retains both
electron from the 0 covalent bond from the co covalent bondand
electrons
and the bond breaks evenly the bond breaks unevenly
A
A B
w A t B A B At t B
polar covalent B A
Normally occurs when non
bonds are broken and can be
Aj t B
initiated by UV light Normally occurs when polar covalent
bonds are broken
Reactions involving homolytic fission tend
to result in the formation of very Reactions involving heterolylic fissions
complex mixtures of products making tend to result in far fewer products
them unsuitable for organic synthesis than reactions involving homolytic fission
and so are better suited for organic
synthesis
The movement of electrons during bond fission and bond making can be
represented using curly arrow notation
Fish hook Arrow Curly Arrow
single electron source electron pairsource
i
TilEi 2e I
single electron destination electron pair destination
,
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller josephineshipp. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.49. You're not tied to anything after your purchase.
