Dude. You should really know just how helpful you really are. You're literally saving thousand of students around the world including me. Huge respect man.

@cosiema

3 жыл бұрын

Same. Not only was I able to get a good grade in organic chemistry, I actually understood the material because of your videos

The founding fathers of organic chemistry are really proud of you You're the only one that doesn't overcomplicate the principles of science You explain it the way it's supposed to be explained

Why is it that the school(s) professors are making chemistry difficult and confusing? You are the kind of chemistry prof we want in the colleges/universities, you make concepts so clear to understand for even a first time learner. They let us think like our heads are upside down...Thnx and God bless u

@karefaisesay4504

5 жыл бұрын

You make us understand in minutes and they confused us for hours...LoL

@gerald7188

5 жыл бұрын

Lol,also had d same experience guys

@mytech6779

3 жыл бұрын

A lot comes back to the bad administration of schools. More concerned with protecting the old arbitrary academic systems then they are with the exchange of knowledge.

@infinity_sh4816

7 ай бұрын

a

The 28 dislikes are teachers who lost their jobs after students started watching Professor Dave instead of attending their classes .

@StrawberryS-vk5my

3 жыл бұрын

FRR

@GammaStyleGaming

2 жыл бұрын

Their*

@theexplorer9672

2 жыл бұрын

Totally agree with you

@sangamkatuwal9437

5 ай бұрын

Lmfao 😂😂

I remember spending 3 years in a tutorial class and not understanding anything..... But your lectures actually made science easy.... And life easy.... Thanks a lot

Oh my.....These series of videos are extremely helpful... thank you so much for those videos. Your explanation is just super clear and I now start to love o-chem because of your videos. Thank you Professor. Dave!!!!

YOU ARE SAVING MY LIFE RIGHT NOW. My professor just taught me this and I understood nothing. You explained in minutes and its so clear now. THANK YOU!

Thanks to you prof I am not gonna fail at chemistry final exam tmw u just saved my life =-)

@ProfessorDaveExplains

8 жыл бұрын

+Jumana Gaydi you can do it!

I just want to say thank you for all your videos. With your help, I was able to not only pass organic chemistry but also get an ‘A’ in it.

Best teacher ever , never knew some one could teach this well . Thanks man , god bless you . Keep up the good work .

@catarinafernandes8984

2 жыл бұрын

he is amaziiiiiiiiiiiiiiiiiiiiiiiiiiiiiing

Thank you sir for making these great Videos. I learn a lot even though im not a native english speaker. =)

With these videos, I could understand organic chemistry easily and engage interestingly in my natural products projects. Dave! You made life live. You're the one thst should win the nobel prize for education.

Thank you so much! Love the presentation. Clear, straight to the point and demonstrating "how" to approach the concept.

Saying thank you is not enough for such a great teacher like yourself .thanks a lot.

you are an amazing teacher! I'm taking organic chem in 12th grade rn.. thank you so much

Thank you for making me understand organic chemistry

You dont know but you really helped me a lot. THANK YOU SO MUCH PROF.

You don't know how much you save me for this semester! thanks professor dave! 😭😭❤

4:43 Professor Dave I think that the higher priority would be given to a double bond rather than a triple bond while naming a compound with a double bond and a triple bond at the same position from either side. Please solve my ambiguity! Also your teaching style is awesome and far better than the IIT JEE tutions here in India!

@alitornado2

2 жыл бұрын

Yeah dude! The priority goes to the double bond first! Then comes triple bond and then single bond!

@CabbageSandwich

2 жыл бұрын

@@alitornado2 The correct answer is both. This video is slightly dated on its naming conventions. With some new IUPAC conventions since this video came out 7 years ago, we treat the en and yne suffixs the same way he treats the alcohol suffix in this video, except stacked in the same name, ill show you below. Additionally because of this change, we don't use "#-(carbons)(ene)" anymore. e.g "3-ethene" If we want to specify the position of a double bond in ethene, we input a space into the name, for instance, "2-chloro eth-1-ene". This also allows us to use stereochemistry modifiers E and Z to signify cis and trans double or triple bonds like this, "3-chloro pent-1(Z)-yne", a 5 carbon chain with a chlorine on the third carbon, and that has a bent first carbon on a triple bond at the number 1 carbon. To answer your question though. An actual name of a six carbon chain with a double and triple bond on the ends is "hex-1(E/Z)-en-6(E/Z)-yne". Where the E/Z considers the stereochemistry of the bond *e.g whether the first/last carbon is on the same side or opposite side from carbon #3 / #4 respectively. You can consult some various sources for this on the new Blue Book rules but I used this one. www.masterorganicchemistry.com/2011/02/14/table-of-functional-group-priorities-for-nomenclature/

@nayachi341

Жыл бұрын

@@CabbageSandwich hello, i have a query regarding the same, if a triple bond is closer than the double bond, then from which way the numbering should start?

@CabbageSandwich

Жыл бұрын

IUPAC convention is that naming would start from the end closer to the triple bond. depending on exactly what you mean here.

@gbadebosamson8423

10 күн бұрын

I think double bound should be given higher priority .I just watch a video where it was given

Wow....you make it look so easy! Great stuff!

YOU ARE AWESOME! Thank you so much for making these videos. You have no idea how much it has helped me..

Thank you, Professor Dave, thanks to you I can learn Alkynes of useful stuff.

Thanks dude for making such awesome videos which help many people out there including me in my boards

Video I see, video I like, thank you Dave

Congratulations for 1 million sir

sir, you are great... 👌👌

Thankx aloot Professor for your video . it's really amazing ..

Professor Dave thank you for this explanation its way better than my teacher

Enjoying the videos so far. I was confused what happens if the double or triple bond is not on the longest chain. As far as I understand from a quick search, it's the longest chain containing the double or triple bond which is used for numbering.

You are a legend, glad I found you!

very clear explanations thank you

You're such a great help!!!!!!!!!!! Thank you 😊😊😊😊😊

thank you so much! This is way easier to understand.

May you will be bless always thanks for releasing my stress

Greatly Explained !!!👍👍👍👌 Thanks a lot from INDIA.

You're a truly life saver.

this guy gonna help me fall of 2022, for now imma get as much info in so ill be prepared for next year

Superb.. Its helpful

Thanks!

prof dave single handedly helping my grades in science

Hey Professor Dave, can you make a video on IUPAC of ethers? Your videos are extremely helpful. Thank you so much!!!

thank you prof.

Great video, thanks

just remember guys that the priority order for lowest occurance and in the selection of the principal carbon chain is Functional group (like OH, COOH, etc...) > unsaturated bond (double and triple bond)> Longest carbon chain (number of carbon atoms) > substituent groups (like F, Cl, Br, I, methyl, ethyl, etc...)

I don't enjoy chemistry, but he just makes it so interesting.

Thank you again profs , have to submit answers to 100+ questions on IUPAC naming tommorow =w=

très bonne explication merci beaucoup

it was so helpful

I love you so much, Professor Dave ❤️❤️❤️

Thank you very much Sir 😊

you can tell he loves teaching this stuff

Thank u this is so helpful

keeping em coming lol great video professor dave

You are a amazing teacher for children. You have pretty much explained everything. Your videos have benefited me and my friends greatly and i would love to have more of your videos. Please tell me about plus two chapter 9 coordination compound. Plzz arrgenttly my board exam in 2020 march .

Dave! You've just inspired me to create a Chemistry/Physics KZread Series. This is just a thought though. :)

Professor thank u so much..lots of love from india🤗🤗🤗🤗🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳

Thanks

Thnxx sir.. For ur explanation

thank you very much !!!

Thank you Dave. You are cool!

best professor

I totally hate chemistry and I'm enjoying this ... Also, I have an exam in a few and I'm sure I got this covered thanks to your videos ☺️

cheers

Thank you!

@YamenLahham-xm2cl

Ай бұрын

hi

Prof Dave can u make a clip on backbonding.....

Exam tomorrow thank you

Thank you! Amen.

YOURE SO AMAZING WATAFAAA

If I only knew this video exists, I wouldn't have headache back then :D

Good

Sir is it still necessary that you will put 1 before pentene?

You are best prof please sir I wish to ask if it's hept-3-yne or 3-heptene I love you sir God bless you

Other sources are saying that alkenes and alkynes have the same priority but priority is given to alkenes for alphabetization in the event of a tie. I may have misread them.

professor Dave what if there an alkene and an alkyne together in the compound what do we do ??????

I have a question: If that was an alkyne instead of an alkene at the end, would the suffix be "butyn-1-ol"? instead of "butyne-1-ol"?

I also wanted to ask-- why are we not including Z/E stereoisomerism in this IUPAC name?

Thank uuu!!!

Regarding to that 1 on pente-1-nol in your next video of cyclic compounds you said it is implied that the hydroxyl group is on carbon1 thereby not writing the 1 on the final answer but here you wrote it there may i get to understand why?is it because that one was a cyclic and this one isn't....am confused now about numbering compounds with functional groups 😭

Professaur....DAVE

Awesome ❤❤❤❤

Ur osm in ur ownkind in doin orgo simpler than our professors who made it complex Plz cover the topics like preparation of hydrocarbons I wish u would do it bruhh...◉‿◉

Love your work man! But our professor told us Alkynes have the lowest priority..

Prof explain on eclipse and staggered conformation

@ProfessorDaveExplains

8 жыл бұрын

+bonface chwara check out my clip on conformational analysis of ethane and butane!

Chemistry Dave grohl just saved me

Why did you use the dash and hash (whatever it is) in place of actual methyl line representing the Methyls in the first formula of Alkenes?

@ProfessorDaveExplains

3 жыл бұрын

check out the first tutorial in this organic chemistry playlist, it explains the dash and wedge notation

thanks professor dave :3 my gf never listens to me but she WILL listen to YOU

Is it still okay if the suffix is hept-3-en-1-ol?

Hello sir! Love your teachings always, it is much easier and clearer than my profs at school who makes it more difficult to understand. Anyways i do have one question to clarify. Aren''t alcohols termed as OH? 😶

@ProfessorDaveExplains

3 жыл бұрын

an OH is a hydroxyl group, and a molecule with a hydroxyl group is called an alcohol

@sweetzcv9373

3 жыл бұрын

@@ProfessorDaveExplains okk, thank you sir for the reply😊

I would have a question : in the example at 4:10 what makes us choose the top path? Is there a rule about chosing a path that minimize the number of bonds in the substituants? With the same example taking the lower path would mean that the group would be 3 bonds long while taking the top one makes a 2 bond group. Am I extrapolating this correctly? Or maybe there is a rule that state that family modifiers must be attached to the main chain, forcing to choose the path with the hydroxyl group. In case the bottom path is valid what would be the name of this thing?

@ProfessorDaveExplains

3 жыл бұрын

The parent chain must contain the hydroxyl group, it's the highest priority group.

@nejaahalcyon

3 жыл бұрын

@@ProfessorDaveExplains Thank you for clearing this up for me, and thank you for these incredibly well made videos.

Prof Dave, @6:22, because of the double bond, would we be expected to write this as cis-5-chloro-3-ethyl-4-methyl-hepten-1-ol? or is there a reason we don't need to identify the cis/trans conformation?

@ProfessorDaveExplains

3 жыл бұрын

so this would require E/Z nomenclature, i just haven't covered yet at this point in the series, there's another tutorial on that

I had a problem on a test that I didn't understand when naming. The compound is 4-chloro-1-methyl-2-propylcyclohexane. Why does the count in counting the carbon chain starts with the methyl and not the chlorine? I thought since Chlorine not being a carbon chain would take priority in naming, then I would counts backwards making the propyl third and the methyl fourth. Could you explain why the priority. Thanks. Love watching your videos.

@ProfessorDaveExplains

5 жыл бұрын

so for cyclic compounds its totally different, check out my tutorial on IUPAC for cyclic compounds!

what if a compund contains both double bond and triple bond?

Can I write 4,4-dimehtyl pent-1-ene, or does it have to be 4,4-dimehtyl-1-pentene? I also did 6-iodo hexan-3-ol instead of 6-iodo-3-hexanol. Is that correct? Please only comment if you are an expert in this. Thanks!

@ProfessorDaveExplains

Жыл бұрын

interchangeable

At 6: 23 prof Dave is flicking his luscious hair

Nice intro song 😀

Now this has two longest carbon chains so why isn't this 5-chloro-4-methyl-3-hepten-3-ethanol?(Or 5-chloro-3-ethaanol-4-methyl-3heptene)?

Hi Prof. Dave. I wanted to ask, can we start by numbering the chain from the carbon that's below the alcohol (The one you called 3-ethyl), instead of the one that's right next to it?

@ProfessorDaveExplains

6 жыл бұрын

nope! longest carbon chain must contain the hydroxyl group.

@stan9095

5 жыл бұрын

Glad someone already asked this question. So in that case location of the hydroxyl constinutent indicates the main carbon chain? Sweet

@asdfzxcv4176

Жыл бұрын

hey man thanks for asking it

Why hydroxyl given highest priority? 😊logic behind please!

Quick question. In the Alkene example you labled the substituent double bond 1-1-pentene. How come on this one it is not 3-3-3-heptyne, and it's just 3-heptyne?

@ProfessorDaveExplains

6 жыл бұрын

that's an L for the end of methyl! it's just 1-pentene. we need just one number to indicate the location of the pi bond(s).

@steffaniesainato5322

6 жыл бұрын

Awesome! Ok thank you. I was confused for a second. Can I just say I am loving your Ochem videos. I haven't taken this course yet but am prepping for my MCAT so in addition to my Kaplan test prep materials I am using this as a supplement. It is way easier to understand from you, and honestly it seems like Ochem is going to be fun. Never thought I would ever say that lol.

4:28 why the upper one? Why not the one under it?