What starting materials are needed to prepare the compound below via aldol reactions? Hint: thi may...
Retrosynthesis. Identify the starting materials needed to make the following compound via an aldol condensation. olan =
Draw the starting materials for the compound given below via directed aldol condensation reaction. Show the resonance structure for the following, α,β-unsaturated ketone. 1. Propose reagents or products as needed (you will need sets of reagents for arrows pointing left and 1 product for the right facing arrow). 2. H3C-SH HO
D8 April 9, 2019 Draw the starting materials for the compound given below via directed aldol condensation reaction. resonance structure for the following, α,β-unsaturated ketone. 1. Show the 2. Propose reagents or products as needed (you will need sets of reagents for arrows pointing left and 1 product for the right facing arrow). H3C-SH CH3 HO
Problem 2. Provide the structures of the starting materials necessary to form the following compounds via an aldol condensation, Claisen condensation, or Wittig reaction. Use each reaction once, and indicate which reaction you are proposing. For some reactions, there may be multiple correct answers (provide only one).
QUESTION 12 Prepare the compound shown below from cyclohexanone (use as many molecules as needed) and organic compounds of three carbons or less as the starting materials. Show the product of each synthetic step and indicate all necessary reagents and reaction conditions. Count carbons carefully! os
Draw the missing major organic product(s), starting material(s), or reagents for each of the following reactions (DO NOT WRITE +EN AS A PRODUCT (ie draw everything out!)! And remember stereo and regiochemistry.) Assume reagents are in excess unless otherwise indicated. **To make things simple, I indicated what is needed for each section! Please don't just put the answers, but explanations as well on why. Thanks! a) draw the starting material for this reaction. b) draw the product for this reaction....
CONCEPT QUESTIONS Mechanism. While the reaction carried out in lab used potasslum hydroxide as the catalyst, many other catalysts have been developed to increase regioselectivity and stereoselectivity in aldol condensations. One small molecule catalyst commonly used is proline, a naturally occurring amino acid. The mechanism invoives the initial formation of an enamine; predict the structure of this enamine intermediate (Intermediate A), and draw the mechanism for the conversion of intermediate A to Intermediate B. Helpful Hint: The formation of the...
Mechanism. While the reaction carried out in lab used potassium hydroxide as the catalyst, many other catalysts have been developed to increase regioselectivity and stereoselectivity in aldol condensations. One small molecule catalyst commonly used is proline, a naturally occurring amino acid. The mechanism involves the initial formation of an enamine; predict the structure of this enamine intermediate intermediate A), and draw the mechanism for the conversion of intermediate A to intermediate B. Helpful Hint: The formation of the new carbon-carbon...
Post- Laboratory Questions: 1. Draw the product of the following Diels-Alder reactions 2. What starting materials would be used to prepare the following compound by the Diels- Alder reaction? 3. Cyclopentadiene dimerizes easily. Before using cyclopentadiene in a reaction, it is necessary to crack the diene. Draw the Diels-Alder reaction for the dimerization of cyclopentadiene. 4. What are the products of the following Diels-Alder reactions? Show the stereochemistry where applicable
CONCEPT QUESTIONS Mechanism. While the reaction carried out in lab used potassium hydroxide as the catalyst, many other catalysts have been developed to increase regioselectivity and stereoselectivity in aldol condensations. One small molecule catalyst commonly used is proline, a naturally occurring amino acid. a The mechanism involves the initial formation of an enamine; predict the structure of this enamine intermediate (intermediate Al and draw the mechanism for the conversion of intermediate A to intermediate B. Helpful Hint: The formation of...