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pls explain the reaction of the preperation og dibenzalacetone by mixed condensation
1. In the introduction the crossed-adol condensation reaction to produce dibenzalacetone is discussed. This reaction require 1 equivalent of acetone for every 2 equivalents of benzaldehyde to produce the desired product. What side product would you expect if not enough acetone was used? 2. What reagents and in what equivalent would you use to synthesize benzalacetophenone? 3. How would you synthesize 2-ethylhex-2-en-1-ol from butanal? 4. Draw the resonance structure for the following enolate ions: 1. In the introduction the crossed-adol...
Dibenzalacetone Synthesis PURPOSE: purpose of this lab exercise is to synthesize dibenzalacetone by means of an aldol condition. INTRODUCTION: Wow, is it wet in here or what? That's what happens when you condense, right? No, that is not right, you say! You can condense things without getting wet in organic chemistry. Think about aldol condensations, you tell me. Yes. yes..of course you are correct: organic condensations dont get you wet. They get you a new product. Silly me Aldol condensation...
preparation of dibenzalacetone by using an aldol condensation. full mechanism explained full detail
SHOW FULL MECHANISM AND REDRAW (In your own way) OF Dibenzalacetone by the Aldol Condensation reaction BELOW co.ken, + CH,CCH CH.CH NaOH -CH=CHCCH=CH- cu condcn=cr YW 40.01 Benzaldehyde MW 106.13, bp 178°C den. 1.04 Acetone (2-Propanone) MW 58.08. bp 56°C den 0.790 Dibenzalacetone (1,5-Diphenyl-1,4-pentadien-3-one) MW 234,30 н он но е да се оди о-~- CH.CCH. CH,CCH.C Сн,сен,с- ОН ОН -OH он н Hic C- 2 тро нс C-C=CH + H-O + OH Н ОН A B-hydroxyketone Benzalacetone (4-Phenyl-3-butene-2-one) mp 42°C
nzaldehyde via the aldol condensation. 2. What is the role of sodium hydroxide in this reaction? 3. Explain formation of the double bonds in dibenzalacetone. 4. Construct a model of dibenzalacetone to show structure and geometry. Are there other possible geometric isomers? 5. Research the most stable isomer based on melting point and geometric structure. cluas vield next week
The Aldol condensation: Synthesis of dibenzalacetone I need help with question 4 and the second part of 5 please.
For an Aldo-condensation reaction. Explain why the condensation reaction occurred even though no “heat” was provided.
please explain what is happening in the reaction for the preperation of cis-alpha-beta-dibenzolystrene usine benzil reacted with acetophenone. and why is the koh/methanol soltion used
How to solve question 2 to question 5. 2. Why does the mixed aldol condensation, producing benzalacetophenone is the main reaction in this experiment and NOT both other possible reactions; acetophenone condensation and Cannizzaro benzaladehyde reaction? 3. Propose a reason to explain the statement that the trans-benzalacctophenone isomer is the major product in aldol condensation 4, Explain why the main product from the bromine addition to the trans-acetophenone is crythro-dibromide 5. Write a mechanism for the addition of aniline to...