Acyl Chlorides and Acid Anhydrides

Give the general formula for acyl chlorides.

RCOCl

Molecules formed from reactions involving carboxylic acids are called…

carboxylic acid derivatives

thionyl chloride formula

SOCl₂

Give the equation for the reaction between ethanoic acid and thionyl chloride

CH3C⁢O⁢O⁢H+S⁢O⁢Cl2→CH3C⁢O⁢C⁢l+SO2+H⁢C⁢l

What is the shape of thionyl chloride (SOCl2)?

What are the bond angles, according to VSEPR?

• trigonal pyramidal

107 degrees

What acyl chloride is produced by the reaction between sulfurous dichloride and butanoic acid?

butanoyl chloride

Name the acyl chloride derived from propanoic acid?

propanoyl chloride

Name all the products of the reaction between pentanoic acid and sulfurous diiodide.

• sulfur dioxide or sulphur dioxide or SO2

• hydrogen iodide or hydrogen iodide or HI

This is called…

propanoic anhydride

Acid anhydrides are molecules with…

Two acyl groups bonded to the same oxygen atom

Give the IUPAC name of the molecule with the formula (HCO)2O.

methanoic anhydride

Draw a molecule of ethanoic anhydride.

what are the products of acid anhydride+alcohol?

ester and carboxylic acid

Draw the products of this reaction:

Can acyl chlorides react with water?

yes

can acid anhydrides react with water?

yes