in this mechanism there is formation of six membered ring from 5 embered ring , this is becous steric reason 5-membered ring is less stable than the the six membere ring. hence molecule get to stable by releasing energy hence the process is exothrmic process.
in this 1 on reacting with 1% H2S04 the ketonic carbonyl get protonated which can accept the electron density from the ring and carbocation is generated on same tome nearest 0-C bond break and which can attack on the carbocation hence ring get expanded to 6 membered 2. Finaly the ring get aromatise 3 by accepting proton by HS04- ion .To obtained the product 4.
2. (5 pts) Provide a mechanism for this rearrangement. Include all intermediates. Show all electron pushing....
4. Provide a stepwise mechanism. Include all intermediates, resonance structures, and electron pushing arrows.(ALL OR NOTHING) HEC CH3 AICI D. HCI 5. (Provide the product(s) or reagent(s) for the following reactions. COM ????? ON 77277 HON C ?????
Provide a mechanism for the following reaction. Show arrow pushing and any intermediates. 6. Provide a mechanism for the following reaction. Show arrow pushing a n for the following reaction. Show arrow pushing and any intermediates. OCH3 CH3 methanol OH sulfuric acid (catalyst)
Organic Chemistry Provide mechanism for reaction while using electron pushing arrows showing all possible intermediates and include the most stable resonance. SbCl5 t-BuCI /t-BuOH CF3 CF3 e:o. :O NH3 reflux NH 2 b) Ci: CO CF3 CF3
Please provide the mechanism for this reaction, and include all intermediates and arrows to represent electron movement. H2SO4 (cat.), CH30H
explain the mechanism in words c Draw the full electron-pushing mechanism (using proper electron-pushing arrows, intermediates, and structures) for the synthesis of phenolphthalein from phenol and phthalic anhydride. It's an electrophilic aromatic substitution reaction! c Draw the full electron-pushing mechanism (using proper electron-pushing arrows, intermediates, and structures) for the synthesis of phenolphthalein from phenol and phthalic anhydride. It's an electrophilic aromatic substitution reaction!
1) Provide a detailed electron pushing mechanism for the below transformation. Show ALL relevant resonance structures to help explain why the para product is the major organic product. (Note: your electron pushing mechanism should include formation of the electrophile) (4 points) Cl AICl3
Draw the complete electron-pushing mechanism for each of the reactions. Please draw the reactants, intermediates (with formal charges), products, and electron-pushing arrows. 1. Draw the complete electron-pushing mechanism for each of the reactions. Please draw the reactants, intermediates (with formal charges), products, and electron-pushing arrows. (6 pts) 2 OH H2O HCI
Provide a full mechanism for the following reaction. Include intermediates, formal charges, and curved arrows to show electron flow. Provide a full mechanism for the following reaction. Include intermediates, formal charges, and curved arrows to show electron flow. H20, H о нон, он вме OH HN
Notes: A ‘detailed’ mechanism should illustrate all intermediates, by-products, and electron-pushing arrows. The marking scheme is given for each question as a guide; It is subject to minor changes. In class, we learned how to synthesize epoxides from alkenes using meta-chloroperbenzoic acid (mCPBA). Epoxides, like bromonium ions and mercuronium ions, can be ring-opened with various nucleophiles. The stereochemistry of the product depends on if the ring-opening occurs under acidic or basic conditions. The following two reactions – ring opening of...
10. Use a curved arrow, electron pushing mechanism to account for the changes in bonding for the reaction below. Show each mechanistic intermediate structure; be sure to include stereochemistry and formal charge, where appropriate. BT Br2 > L Br CCl4 What is the main reason why the reaction above produces an equal mixture of enantiomers? (2 pts)