Question

1. a. The yield of the reaction to form your chalcone is not quantitative. What side...

1. a. The yield of the reaction to form your chalcone is not quantitative. What side products might be formed from your aldol condensation? b. Usually it is difficult for ketones to undergo aldol condensations. Why is your reaction successful?

Homework Answers

Answer #1

b)

Aldehyde is more reactive than the ketone towards reaction of enolate and undergoes aldol condensation. But it is difficult for ketones to undergo aldol condensations because all ketones having alpha protons may form enolate

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1.)A reaction in which A, B, and C react to form products is zero order in...
1.)A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. By what factor does the reaction rate change if the concentrations of A is doubled? By what factor does the reaction rate change if the concentrations of B is doubled? By what factor does the reaction rate change if the concentrations of C is doubled? Enter your answers numerically to two significant figures. 2.)...
1A. The product from your reaction has a sharp melting point, indication that it is either...
1A. The product from your reaction has a sharp melting point, indication that it is either meso-hydrobenzoin or a racemic mixture of the (1R, 2R) and (1S, 2S) enantiomers. Why is it not possible that your product is either the (1R, 2R) or the (1S, 2S) pure enantiomer? 1B. What is the enantiomeric excess (ee) of a racemic mixture of enantiomers? 1C. If the racemic mixture of the hydrobenzoins were formed in the reaction of benzil with sodium borohydride, describe...
1. What product (or products) may form if the reaction is not kept on ice during...
1. What product (or products) may form if the reaction is not kept on ice during the addition of the acid mixture to the acetanilide? 2. If compound A is more polar than compound B, which compound will have the highest Rf value on a TLC plate that is eluted with ethyl acetate? Which compound will have the highest Rf value if the plate is eluted with dichloromethane? 3. What compound (or compounds) would form if aniline was used instead...
1) Elemental S reacts with O2 to form SO3 according to the reaction 2S+3O2→2SO3 A) How...
1) Elemental S reacts with O2 to form SO3 according to the reaction 2S+3O2→2SO3 A) How many O2 molecules are needed to react with 3.25 g of S? B) What is the theoretical yield of SO3 produced by the quantities described in Part A? 2) 1.05 g H2 is allowed to react with 9.71 g N2, producing 1.15 g NH3. A) What is the theoretical yield in grams for this reaction under the given conditions? Express your answer to three...
1) Tungsten (W) reacts with Cl2 to form WCl6. What mass of WCl6 is formed from...
1) Tungsten (W) reacts with Cl2 to form WCl6. What mass of WCl6 is formed from the reaction of 12.6 g W with 13.6 g Cl2? 2) NH3 reacts with O2 to produce NO and H2O. How many moles of O2 are needed to react with exactly 10.0 moles of NH3?
Part A What is the average reaction rate between 0. and 1500. s ? Express your...
Part A What is the average reaction rate between 0. and 1500. s ? Express your answer to three significant figures and include the appropriate units Part B What is the average reaction rate between 500. and 1200. s ? Express your answer to three significant figures and include the appropriate units. Part C What is the instantaneous rate of the reaction at t=800. s ? Express your answer to two significant figures and include the appropriate units Average and...
1. The percent yield for the reaction PCl3 + Cl2 → PCl5 is 62.6 percent. What...
1. The percent yield for the reaction PCl3 + Cl2 → PCl5 is 62.6 percent. What mass of PCl5 would be expected from the reaction of 32.1 grams of PCl3 with excess chlorine? 2. Balance the chemical equation for the important industrial process: C2H4 + O2 + HCl → C2H4Cl2 + H2O. Given 675.0 kg of C2H4, calculate how many kg of C2H4Cl2 can be produced. 3. Calculate the number of moles in 2.75 μg of Te.
1. After you have extracted a product, why might you get a melting temperature range? What...
1. After you have extracted a product, why might you get a melting temperature range? What do you do with the temperature range you determine? 2. How might you calculate % yield from a reaction?
Limiting Reactant Procedure In the following chemical reaction, 2 mol of A will react with 1...
Limiting Reactant Procedure In the following chemical reaction, 2 mol of A will react with 1 mol of B to produce 1 mol of A2B without anything left over: 2A+B→A2B But what if you're given 2.8 mol of A and 3.2 mol of B? The amount of product formed is limited by the reactant that runs out first, called the limiting reactant. To identify the limiting reactant, calculate the amount of product formed from each amount of reactant separately: 2.8...
A Grignard reaction was performed with the following: 30.5 g 1-bromopropane, 7.30 g magnesium, 255 mL...
A Grignard reaction was performed with the following: 30.5 g 1-bromopropane, 7.30 g magnesium, 255 mL diethyl ether (“Et2O”), 27.5 mL 4-methyl-2-pentanone (“methyl isobutyl ketone”). What is the theoretical yield, in grams, of the product of this reaction? Show your calculations The product from the Grignard reaction in above undergoes an E1 elimination reaction. Draw all possible elimination products.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT