Aldehydes Common, IUPAC names Practice (Part - 3) - Aldehydes, Ketones & Carboxylic Acids, Chemistry Video Lecture - Class 12

hello friends this video on aldehyde
ketosis and carboxylic acid part freeze
brought you by exam fear calm no more
fear from exam let's call this IUPAC
name
the first one is ch3 to see HCHO so let
me first tell you that this is my
compound yeah this is my compound and is
my longest chain numbering will start
from here 1 2 & 3
alright so now I have to write a common
name also and the IUPAC name also
so for common name this is my derived
from ISO butane isobutane catch to
something here so it will be ISO butyl d
hi this is derive from ISO bit like a
sin but IUPAC name we have a better
rules let's focus on IUPAC name so at
second position I have a methyl Group
right if you see my this is my chain
this is my extra sub C chain so at
second position our methyl groups will
be 2 methyl the number of carbons in the
chain is 3 with it throw throw panel but
let's see this this is again common name
and are you busy for this the common
name will be a column for common name
you use alpha beta comma because this is
my ID hi gross this my alpha is my beta
we have told that the so this will be
alpha because this is my carbon and
through this car the to this Co exactly
put like this here this is pretty clear
Co H so in this carbon discovered a tag
is my alpha this coven becomes beta and
this becomes come alpha beta comma
alright so the IUB the common name for
this will be CN is common name gamma and
gamma have methyl group this is my
cyclohexanol di this is my commonly
because they'll derive from cyclohexanol
acid let's write the IUPAC name pretty
better IUPAC name because we have more
but the rules
so for IEP c name this is my again
cyclic compounds my first carbon will be
numbering will be this correct the way
place where my CI should be design is my
position 1 this is position 2
this is position 3 correct please note I
will not start from this the numbering
starts in the ring only see in this case
I have taken 1 as this carbon right mica
Bosley good pollen but in this case
cyclic group my dehumanize this cup it
because I am taking doing the numbering
in the ring itself height 1 2 3 4 5 6 I
am doing the running the ring so the
numbering starts in the ring from the
carbon that is nearest to see you
actually
so in this case the IPC knee means that
third i have a methyl group so it will
be 3 methyl and then I will have
cyclohexane and you have to append this
with benzaldehyde right this been gently
idea cyclohexane gingerly hi so it is 3
methylcyclohexane benderly height so
please note in the IUPAC name when you
talk about the normal carbons the branch
or a straight carbon the co h group is
also part of the chain right so you
start the numbering from
COOH group itself but in this case the
cyclic ones where you have to number
this in the string you don't include
let's see oho
let's take from some more examples to
clear our doubt we'll see this again
here also we have to write in common
name and IUPAC name first let's draw the
structure ch3cho ch3cooh correct this is
my long oisin since the straight one
chain I will include this this is 1 this
is 2 in this third cup all right so
first let me die you piece name for
IUPAC name you see at second position I
am a methoxy go why is OCS 3 let me talk
single so at second position I have a
methoxy group so it will be 2 methoxy
and then I have myth it pro 3 carbon in
the chain so panel this will be the
IUPAC name pretty easy to our methoxy
just say to me Roxy pro panel let's set
the commonly common name we have alpha
beta gamma this is my co h group please
note when you say write the common name
we do not include the co h you start
alpha 2 meter like this so alpha is the
carbon that is attached to the sewer cos
rope my alpha carbon is Beta Kappa
so at alpha I have a methoxy cell use
alpha methoxy this is from propanoic
acid so it is open aldehyde
alpha methoxy broken aldehyde correct
this is to methoxy propanil and the
common name is alpha methoxy propanil
dehyde let's take this M is a straight
chain right two three four carbon this
is the Shinya you can add extra carbons
if you want now in this case right
diapason us down a numbering from here
one two three four five effect numbering
is not required because there is no
branch here right since the five carbon
so the car IUP seen email right first
five is what pent spent another common
name is a common name for this that is
called valor aldehyde because it is
derived from parallel TOEIC acid but
there is no such concrete rule for
common in your remember some of them but
IEP see neem actually you don't have
remembered just if you know the logic
you can find the IUPAC name let's take
this example we tore the structure first
if you draw the structure can easily
make out the compound now in this case
also ideally one two three naming
convention so first allied IUPAC name
again if you see at - I have a II right
so but there is no branch so it is myth
it probe so it's pro at - I am II spoke
to he dull that is the IUPAC name with
it probe three carbon had to have each a
probe to in and you have to add a ll d
hi for sewage right
probe is one who is one mean is one
others dropped another if you want right
the common name of this the common if
this compound is a crow Li why does
acrolein I don't know just like that
scientist is to call it a crow lean in
the past still they call it crude is
acrolein let's see some more examples so
I have this compound you need IUPAC name
for this so you see this a benzene ring
in the benzene ring I have at 1 2 3 4 5
6
I did the numbering in such a way so
that co h group get the least number so
in this case is benzene and 1 2 position
I have a carbon dehyde so the pipe is
name will be benzene one to die because
they are two Cubberley high and carbon
to hide my carbon di because they are
too covered here so it's benzene one to
die company i you want to write a common
name common name again is something
little weird
this is a lot high let's remember
this commonly it's like this compound is
trying to find IUPAC name they told for
ring this is my co h to the carbon
attached to CH which will be in one
position and there are number either in
this way or this way to make surely
proving it the lesser number when I
start from this in this direction
anti-clockwise one two three four
blowing it's a fourth number start in
clockwise direction one two three
propagate the third number so I'll take
the clockwise direction and give booming
number three
so I appreciate will be at three am
bromo group so it is three bromo and
then I have a benzene
and then I'm Carmindy hi
you can also say is-3 bromobenzene bhai
both are same because it is also called
benzene behind so you can also see three
major Lehigh anything you can see let's
try the common thing for commonly if you
see this is at meta position
this is ortho this is meta position this
para position if you consider see this
as a base its ultimate end path so admit
I have a bromine so it will be meta
bromo Ben Jan di this one is the common
because this the whole thing is
benzaldehyde common name but this is
common name is popularly accepted if you
see now facing the most we use
benzaldehyde because this is pretty
accepted name as IP seen him also the
actual IP c name is benzene carbaldehyde
but see this is so much popular if I've
been Zelda it is also accepted as the
common is ibis new thank you visit our
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