Study finals can be overwhelming. In this blog, we have collect written down some good information for reviewing organic 1 and organic 2 til aromatic.
Another tips are... there are many practice exam and resource in other university that can help you learn more.
You will feel less pressure from overwhelming information but since theres information are very scatter. I am building up these chemistry department list to make sure I can incorporate them here like pathfinder.
Sunday, May 3, 2009
Sunday, February 22, 2009
Aromatic
Internal alkene does not count as a pi system. See example in www.yourformulasheet.com
Planar or not in annulene , mostly I suggest to memorize them. there is no uniform way to distinguish them in my understanding. But maybe you do and feel welcome to comment on this post and let me know. :)
Think aromatic is a live system where pi electrons must be able to move around. If any P orbital is block, which means is the carbon does not have an empty p orbital, this compound would be non-aromatic. BUT, not for Nitrogen atom. ( you remember no Sp3, but that is in "carbon", not all other atoms)
Planar or not in annulene , mostly I suggest to memorize them. there is no uniform way to distinguish them in my understanding. But maybe you do and feel welcome to comment on this post and let me know. :)
Think aromatic is a live system where pi electrons must be able to move around. If any P orbital is block, which means is the carbon does not have an empty p orbital, this compound would be non-aromatic. BUT, not for Nitrogen atom. ( you remember no Sp3, but that is in "carbon", not all other atoms)
Diene Dienephile
Numbering is a good way to keep track what to do in the reaction.
Always have diene on cis direction when in diene-dienephile reaction. If there is a trans diene, we must not use them. However, there is a trans dienephile, it is ok. The product will just have a anti addition stereochemistry. If dienephile is cis, then the product will have a syn addition in the end.
For more detail, please see www.yourformulasheet.com
Always have diene on cis direction when in diene-dienephile reaction. If there is a trans diene, we must not use them. However, there is a trans dienephile, it is ok. The product will just have a anti addition stereochemistry. If dienephile is cis, then the product will have a syn addition in the end.
For more detail, please see www.yourformulasheet.com
Ether
Ether has no hydrogen bond and that is why it has a lower boiling point compared to the alcohol
Ether has C-O bond and in IR, C-O bond is between 1200-1000cm-1
Ether has C-O bond and in IR, C-O bond is between 1200-1000cm-1
Friday, January 9, 2009
NMR video
NMR Video
N+1 video is now available.
For more exclusive video, please log on to YourFormulaSheet.com
N+1 video is now available.
For more exclusive video, please log on to YourFormulaSheet.com
Wednesday, November 19, 2008
Shortcut to memorize organic
Final... It is impossible to read mechanism for alkene reaction, alkyne reaction and alcohol reaction for a short period of time. Professors can ask about reagents, solvent or intermediate.
This is what I found out with our school...
The major organic exam type questions are reagents, products and intermediate structure. Practice exam can have one of the other but the real exam can have none of it on the practice exam.
This is what I found out with our school...
The major organic exam type questions are reagents, products and intermediate structure. Practice exam can have one of the other but the real exam can have none of it on the practice exam.
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