Starting with propyne and using any other required reagents, show how you would synthesize (2R, 3R)- and (2S, 3S)-2,3-dibromobutane (as a racemic form)
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OChem Question:
Starting with propyne and using any other required reagents, show how you would synthesize
(2R, 3R)- and (2S, 3S)-2,3-dibromobutane (as a racemic form)
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- Draw the structure of the expected organic product(s) formed in the following reactions including correct sine echemistry. If the product is racemic write racemic or draw both isomers. Assume all reagents listed are present in excess unless otherwise noted. If no reaction occurs, state "No Reaction".Draw the products of each reaction, and indicate the stereochemistry where appropriate. Illustrate the mechanism of the reaction. Include the intermediate product and by-product formed in the reaction. (see attached photo) *note: answer letter a and f onlyWhen the following molecule is treated with a catalytic amount of acid a cyclic hemi-acetal is formed. How many stereoisomers are possible for this product? Show formation process.
- Synthesis question. Show how the starting material can be converted to the product through any of the reactions you have learnt in OChem-I and OChem-II. Show all the reagents you need and indicate the stereochemistry when appropriate. You do not need to show arrow pushing like in a mechanism question, only the reactions. If a chiral molecule is formed draw one enantiomer and write “racemic” below the structure. All carbon atoms in the product should come from the same starting material. Use as many molecules of the starting material as you might need to get to the product.Question: Draw structures for the thermodynamic products of the following reaction. Pay careful attention to stereochemistry. **Can you assist me in idenifying why the models are incorrect? Any feedback would be greatly appreciated. Thank you.Write a stepwise mechanism for the following reactions. Please answer correct i will give you upvote but answer all correct
- all questions please 4. (S)-2-bromobutane reacts with H2O under the SN1 conditions to form two substitution products: one with the same relative configuration as the reactant (i. e. the product is (S)-2-butanol) and the other with the inverted configuration (i. e. the product is (R)-2-butanol). a) Explain how this happens (the formation of two stereoisomers – one with an inverted configuration and the other with a retained configuration). b) Which stereoisomer (configuration) will typically have a higher yield? Explain.true or false question. ( explanation not needed) a) Gilman copper reagent does 1,2 nucleophilic addition to α,β.unsaturated ketones b)Tertiary alcohol will be formed by the reaction between any ketone and Grignard. c)Cyclopentadiene anion is aromatic d)Tertiary alcohols undergoes dehydration by E1 mechanism e)1,4-addition product is the kinetic product in the addition of conjugated diene f) Benzene is more reactive than toluene in aromatic electrophilic substitution reactionShow how you would synthesize the target compound ne right from the starting compound on the left. Show reagents and conditions, and the structures of important intermediate compounds. Do not show any (arrow pushing) mechanism. Ignore stereochemistry in this question.
- Identify IUPAC names of A,B,C. Kindly answer quicklyPlease help with the following: Draw a detailed step-wise mechanism for the following reaction. Be sure to show all steps, intermediates, formal charges, and show the movement of electrons with curved arrows.c options for first box are bromothyml blue, chlorophenol red or thymolphathelin second box is red,blue,orange,yellow,green third box is red,blue,orange,yellow,green