Week 6: L13, L14, and L15
Week 6: L13, L14, and L15 CHEM 2325 - 001
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CHEM 2325 - 001
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This 8 page Class Notes was uploaded by Hayley Lecker on Saturday February 27, 2016. The Class Notes belongs to CHEM 2325 - 001 at University of Texas at El Paso taught by James Salvador in Fall 2015. Since its upload, it has received 59 views.
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Date Created: 02/27/16
OrganicChemistry 2Week 6 Important Information: Professor’s Email: firstname.lastname@example.org Class Website: organic.utep.edu/courses/2325 Class Code (E-book): utep2325spring2016 Includes examples of the Homework! Posted the week before the homework’s are due to help everyone get 100’s! L13- Electrocyclic Reactions If its 4n (4,8,12,16…) pi electrons with heat it will be conrotatory, with light it will be disrotatory. If it is 4n+2 (2,6,10,14,18..) pi electrons with heat it will be disrotatory, and with light be conrotatory. The opposite of the 4n. When you go to twist the structure, twist so the ends can meet up so the pi system can do a paracyclic movement of electrons. Example 1 is of a structure that does not change when heat is applied, if the structure has two of less double bonds when heat is applied it won’t change. Example 2: This is example of the 4n+2 rule. First step DRAW out the structure so you can see how to turn it. Once you have now look to see if it will be conrotatory or disrotary. You may notice that is a conrotatory structure but the methyls are cis. Why? Because when you go to turn the ends counterclock wise, the methyls may end up on the same side. You have the pay attention to when you turn the structure. Example 3: Shows how now it follows the disrototary rule of being cis. Example 4: Is of a cyclo system being turned, first make the structure! CHECK YOUR CHILRITY. Then you can start moving around electrons. If this was (3R,4R) it would still make the same structure. L14 Benzene Derviatives L14 is all naming, not just IUPAC names but common as well. Also you be asked to draw some and name others. I am including a table of common ones, and then I will also but other not so common ones that occurred in this lesson. Diphenylmethanone: N-phenylhydroxylamine: 2-hydroxy benzoin acid or ortho-hydrooxy benzoic acid or common name for this is salicylic acid: 4-hydrooxy-3-methyloxybenzaldehyde or vanillin: Nitrosobenzene: 1-phenylethanone: N-(4-hydroxyphenyl)-ethanamide or paracetamol: (S)-2-[2-(6-methoxynapthyl)]propanoic acid: L15 Benzenoid Aromatics I have included some examples and I will include a common list as well.
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