R-S-R
functional group of sulfides
Sulfides
it is also known as thioethers. The sulfur atom replaced the oxygen in ethers
-sulfide
for common names of sulfides are made according to the two alkyl groups bonded to the functional group (-S-), written alphabetically followed by the word
-thia
acyclic compound becomes complex, that is, when several sulfur atoms are present in a compound or in heterocyclic system, the word
sulfides
are characterized by their strong odors, which are similar to thiol odor. This odor limits the applications of volatile thioethers.
volatile, higher melting point, lesss hydrophilic
resemble ethers but sulfides have lesser characteristic of
polarizability of the divalent sulfur center
why does ether have higher boiling point?
Thiphenes
are used in making drugs and plasticizers, production of dye, synthetic resin, solvents, etc.
Sulfones
are used principally for treatment of leprosy and it is also useful for the treatment of variety of dermatologic disorders such as dermatitis herpetiformis
Nitriles
are compounds that contain a cyano (-CΞN) group.
Nitriles
Considered to be carboxylic acid derivatives.
-nitrile
• Acyclic nitriles are named by adding the suffix
number 1
The carbon atom of the –CΞN group is assigned the
preffix -cyano
When there are other functional group that take naming precedence over the nitrile/cyanide group, the
-carbonitrile
Cyclic nitriles are named by adding the suffix
-onitrile
Nitriles in which the -CN group can be thought of as having replaced the –COOH group of a corresponding carboxylic acid are named by removing the “ic acid” or “oic acid” and replacing it with
Liquid at room temperature
• Low molecular weight nitriles are
electronegative nitrogen
causes nitriles to be very polar molecules
chain length increases
• Ethanenitrile is completely soluble in water, and the solubility then falls as
Nitrile rubber
which is highly resistant to chemicals and is used to make protective gloves, hoses and seals.
Citalopram
an antidepressant from Nitrile
Anastrozole
for treating breast cancer from nitrile