Chapter 22, Problem 4PP

Interpretation Introduction

Interpretation:

The products that would be formed on salicin reacting with dilute aqueous HCl is to be determined and the mechanism of reaction for the this reaction is to be outlined.

Concept introduction:

舧 Electrophiles are electron-deficient species, which has positive or partially positive charge. Lewis acids are electrophiles, which accept electron pair.

舧 Nucleophiles are electron-rich species, which has negative or partially negative charge. Lewis bases are nucleophiles, which donate electron pair.

舧 Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any other functional group is called substitution reaction.

舧 Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed is called elimination reaction.

舧 Addition reaction: It is the reaction in which unsaturated bonds are converted to saturated molecules by the addition of molecules.

舧 A carbohydrate is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen-oxygen atom ratio of 2:1

舧 Salicin is a naturally occurring glycoside and is originally found in the bark of willow trees. It is an effective analgesic for relieving pain. Its structure is given below:

舧 Glycosides are carbohydrate acetals and can be simple or complex. These molecules are stable in basic solutions, but produce sugar and alcohol in acidic solutions.