The twoaldohexoses should be identified when D-arabinose undergoes Kiliani-Fischer synthesis. Concept introduction: Kiliani-Fischer synthesis : sugar reacts with aqueous cyanide (NaCN); the cyanide undergoes nucleophilic addition to the carbonyl group of the sugar which yields cynohydrine. The resulting cyanohydrin is heated with water, which undergoes hydrolysis and forms carboxylic acid . These carboxylic acids react itself and formmore stable lactones. Further, lactone is undergoes reduction reaction with a sodium amalgam which yields two aldohexoses. To find : The twoaldohexoses when D-arabinose undergoes Kiliani-Fischer synthesis

Question

Want to see the full answer?

Answer 1

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 24, Problem 65PP

Interpretation Introduction

Interpretation:

The twoaldohexoses should be identified when D-arabinose undergoes Kiliani-Fischer synthesis.

Concept introduction:

Kiliani-Fischer synthesis: sugar reacts with aqueous cyanide (NaCN); the cyanide undergoes nucleophilic addition to the carbonyl group of the sugar which yields cynohydrine. The resulting cyanohydrin is heated with water, which undergoes hydrolysis and forms carboxylic acid. These carboxylic acids react itself and formmore stable lactones. Further, lactone is undergoes reduction reaction with a sodium amalgam which yields two aldohexoses.

To find: The twoaldohexoses when D-arabinose undergoes Kiliani-Fischer synthesis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions ΔΗ is (pick one) A This reaction is faster above 103. °C than below. AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous only above -9. °C. AS is (pick one) ΔΗ is (pick one) C The reverse of this reaction is always spontaneous. AS is (pick one) 18 Ar

Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations conclusions A The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 41. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 94. °C. AS is (pick one) This reaction is always spontaneous, but ΔΗ is (pick one) C proceeds slower at temperatures below −14. °C. AS is (pick one) Х 00. 18 Ar 무ㅎ B 1 1

Draw the product of the reaction shown below. Ignore inorganic byproducts. + H CH3CH2OH HCI Drawing

Answer 2

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 24, Problem 65PP

Interpretation Introduction

Interpretation:

The twoaldohexoses should be identified when D-arabinose undergoes Kiliani-Fischer synthesis.

Concept introduction:

Kiliani-Fischer synthesis: sugar reacts with aqueous cyanide (NaCN); the cyanide undergoes nucleophilic addition to the carbonyl group of the sugar which yields cynohydrine. The resulting cyanohydrin is heated with water, which undergoes hydrolysis and forms carboxylic acid. These carboxylic acids react itself and formmore stable lactones. Further, lactone is undergoes reduction reaction with a sodium amalgam which yields two aldohexoses.

To find: The twoaldohexoses when D-arabinose undergoes Kiliani-Fischer synthesis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 24, Problem 65PP

Interpretation Introduction

Interpretation:

The twoaldohexoses should be identified when D-arabinose undergoes Kiliani-Fischer synthesis.

Concept introduction:

Kiliani-Fischer synthesis: sugar reacts with aqueous cyanide (NaCN); the cyanide undergoes nucleophilic addition to the carbonyl group of the sugar which yields cynohydrine. The resulting cyanohydrin is heated with water, which undergoes hydrolysis and forms carboxylic acid. These carboxylic acids react itself and formmore stable lactones. Further, lactone is undergoes reduction reaction with a sodium amalgam which yields two aldohexoses.

To find: The twoaldohexoses when D-arabinose undergoes Kiliani-Fischer synthesis

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 24, Problem 65PP

Interpretation Introduction