Does NaBH4 reduce aldehydes, esters, or both?
3. NaBH4 usually reacts slowly or not at all with esters. Therefore, LiAlH4 is often needed to reduce esters. Why do you think LiAlH4 is more reactive than NaBH4 (Hint: Compare the electronegativity of H versus Al or B).
can NaBH4 reduce two ketones ? how many H’s does LiALH4 deliver?
Why do esters, carboxylic acids and amides undergo acyl substitution but aldehydes and ketones cannot?
I compounds are aspirin (acetyl salicylic acid) and methyl salicylate (i.e. alcohols, aldehydes, ketones, acids, esters, amides, etc)? 5. Describe what physiological effects aspirin causes in the body, eg. regarding body temperature, pain, swelling and thrombosis (blood clotting). Does it inhibit an enzyme? If so, what enzyme does it inhibit and what substances are formed by that enzyme? [You should check the text book for information on aspirin's actions]. 6. Aspirin belongs to a specific class of drugs known as...
9) 9) Why do aldehydes undergo nucleophilic addition reactions, whereas esters undergo nucleophilic acyl substitution reactions? A) The carbonyl carbon of an ester is more electrophilic than that of an aldehyde. B) Once the nucleophile adds to an aldehyde, neither H- nor R-can be eliminated because they are strongly basic. C) Aldehydes are more sterically hindered than esters. D) The ester carbonyl carbon is sp3 hybridized while the aldehyde carbonyl carbon is sp2 hybridized. E) Once the nucleophile adds to...
can you reduce imines using NaBH4?
Use the pop-up menus to label the following statements as either True of False. NaBH4 will reduce esters LiAlH4 will reduce esters NaBH4 will reduce ketones LiAlH4 will reduce ketones NaBH4 will reduce amides
Give a balanced equation for the reaction that includes both the oxidizing agent (benzil) and reducing agent (NaBH4). In other words I do not want to see 4 R2C=O. Give a brief definition/explanation of reduction in terms of gain/loss of hydrogens, oxygen, and electrons. Sodium borohydride can be used in ethanol solutions to rapidly reduce aldehydes and ketones at room temperature. Even though lithium aluminum hydride (LiAlH4) is much more reactive than sodium borohydride (NaBH4) it can’t be used to reduce aldehydes...
1. Aldehydes, ketones, acids, esters and amides. Write the name of the tu group under its structure. O OCH CH3 HO O HyC-CH2-CH2-6 CH2 -CH H₂C HUN 2. Acetals and hemiacetals. Write the name of the functional group under its structure. OCH3 OCH CH3 Hąc но осна OH ГОСНЫ 3. Draw the structure when each of these undergoes hydrolysis. но осн. Н,0 H3CO OCH H* H20 H осн,сн ochyCH, *** H2O 4. What is the product of this reaction? Circle...
Both aldehydes and ketones contain carbonyl groups: In
aldehydes, the carbonyl carbon atom is bonded to a hydrogen atom,
whereas in ketones the carbonyl carbon atom is bonded to another
carbon atom. Determine which of the following statements are true.
Select (check) the correct statements.Both aldehydes and ketones
contain carbonyl groups: In aldehydes, the carbonyl carbon atom is
bonded to a hydrogen atom, whereas in ketones the carbonyl carbon
atom is bonded to another carbon atom. Determine which of the...