17794721
Description
Flashcards by John Rivada, updated more than 1 year ago
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Created by John Rivada
about 5 years ago
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Where on this compound is the hard El site and where is the soft El site?
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2 (carbonyl) = hard El 4 (alkene) = soft El |
| Mechanism for stoichiometric anionic Nu- conjugate addition |
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| Mechanism for catalytic anionic Nu- and stoichiometric Nu-H conjugate addition |
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| Mechanism for catalytic H+ and stoichiometric Nu-H conjugate addition |
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| Mechanism for stoichiometric Nu-H with no catayltic acid or base conjugate addition |
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Excess amine
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Excess ester
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Give mechanism
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Give mechanism
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| Between 1,4 and 1,2 addition, which is the kinetic product and which is the thermodynamic product? | 1,2 addition is kinetic 1,4 addition is thermodynamic |
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| Scale from 1,4 to 1,2 addition |
Left is 1,2 and right is 1,4
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| How does the kind of allylic structure (1°, 2°, 3°) affect whether 1,4 or 1,2 addition occurs? | 1° - 1,4 addition 2° - in the middle 3° - 1,2 addition |
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| If you want to force a reaction to do 1,4 addition, what should you use? | Copper(I) !!!! |
| Why is alkyne considered a dummy ligand? | Once you add to a cuprate it doesn't come off!!!! |
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| What' so fancy about H2O2? |
The LG is on the Nu!!!
WOAHHHHHHHHHH
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| What kind of electrophiles can you use for an electrophilic aromatic substitution? | Bromination (Br2 + FeBr3) Nitration (HNO3 + h2SO4) Sulfonation (H2SO4)! |
| What is friedal-crafts alkylation? | So you got R-X and then AlX3 AlX3 pulls X from R -X R+ which then gets attacked by your benzene which and proceeds like electrophilic aromatic substitution |
| What is friedal crasts acylation? | The same as alkylation but theres a carbonyl group present |
| Friedal-Crafts mechanism | ** |
| What two things do you need on your aromatic ring for SnAr to occur? | F substitent and another EWG (carbonyl, sulfone, sulfoxide, nitro) |
| SnAr mechanism | ** |
| ortho/meta/para directing groups | ** |
| Hono mechanism | ** |
| benzyne mehcnaism | ** |
| sn2' |
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