15 - 2/24/2012 What is a mechanism for the following...

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

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 2/24/2012 What is a mechanism for the following reaction? What is the mechanism of this reaction? What is the first intermediate? What if the alkyne reacted first? Is the same product formed? A B C What is the mechanism of this reaction? How could this intermediate be converted into (+)anatoxina? ? Why does only one C=C bond react? What is the mechanism for the last step? 1 2/24/2012 How could this intermediate be converted into (+)anatoxina? Where does anatoxina come from? Very Fast Death Factor What is the mechanism for the last step? How does it work? C=O groups, aldehydes and ketones, how do they behave? Very Fast Death Factor Very Fast Death Factor Is anatoxina a cation in a neuron? A. yes B. no What is the major product of the following reaction? always active Very Fast Death Factor ? ion channel active inactive A B C 2 2/24/2012 What is the mechanism of the following reaction? Which C=O group is more stabilized by resonance? Keq G G = RTlnKeq E 236 A R 114 B If the concentration of HCN and CN were equal, what would be the pH of the solution? Would you expect the 2nd equilibrium (Keq) to be (A) larger or (B) smaller than the 1st? Why? Keq A. pH = 7.0 B. pH = 1.0 C. pH = 9.25 G G = RTlnKeq A E 236 aldehyde R B ketone 0.77 Would you expect the 2nd equilibrium (Keq) to be (A) larger or (B) smaller than the 1st? Keq G G = RTlnKeq E 236 benzaldehyde 1703 cm1 R 114 acetophenone 1686 cm1 Would the ketone be predicted to have a (A) higher or (B) lower frequency infrared absorption. 3 2/24/2012 Where does benzaldehyde occur in nature? What is the acetal in the following reaction? hemiacetal acetal benzaldehyde isomaltose amygdalin bitter almonds sweet almonds A B C D How does this reaction occur? acetal What is the acetal in the following reaction? hemiacetal acetal benzaldehyde isomaltose amygdalin A B C D What are these functionalities called? acetal isomaltose isomaltose aldehyde hemiacetal amygdalin 4 ...
View Full Document

Ask a homework question - tutors are online