i learn more from your tutorials than i learn in 50 minutes of my high lectures. Thank you Professor Dave

I wanted to send a personal "THANK YOU!!" for taking time to make these videos, it has seriously helped a great deal. You are appreciated sir.

I guess the faces of Dave in the song are the expressions when he heard the song for the first time! LOL XD

Thanks for clearing up the Cis and Trans vs. Syn and Anti, that helped a lot.

@charleschristov

Жыл бұрын

And very succinct

Thank you for clarifying in a simplified way

I learnt more from Professor Dave's classes than from lessons in my school and tutions ! Thank you sir Greetings from India :D

@courtneyriley185

2 жыл бұрын

I too said leanrt haha 😂 hoo boy

Thanks your videos are so helpful!! I like that the playlist for organic chemistry is in order of how I'm actually learning it so far so that's mega useful too!!

@ProfessorDaveExplains

7 жыл бұрын

yep, i taught the course for years, so i have a pretty good idea of how the order should go!

Professor keep up with the good work you are doing

What happens to the Pt? Is it not take it into acount because catalyst are not used up stoichiometrically? Or something else happens?

Thanks Dave!

these are great! thanks so much!

So I'm about to binge watch 7years worth of content. Hooooo boy. Here we go! Gonna leanrt me some stuff haha!

Professor Dave you're the real MVP

Sir what do u use to ir face

Is there any video to explain the sites of electrophillic attack?

Great ... understand him better than my own professor.

if the example you gave was a Syn addition reaction, how do we know when it could be anti? I understand you added H2 and the methyl group shifted to become dashes (away from you) but what happens when one is dashed and one is wedged? Does it depends on the substituents being added?

@ProfessorDaveExplains

5 жыл бұрын

it depends on the reaction mechanism. some additions are always syn, some are always anti. keep going through the series and you'll see more examples of both!

thank you

thank you sir

mi è piaciuto: chiaro e corretto

in what cases is the product anti, and how would we know which sides the nucleophile will attack the substrate from?

@ProfessorDaveExplains

7 жыл бұрын

so every addition reaction has its own mechanism, so it's a case by case basis. something like a dihalogenation is an anti addition because the second step is an SN2. but in general there is no telling which side of a planar molecule a nucleophile will attack from, that's why there tends to be multiple stereoisomeric products.

Dave you are fantastic person wonder full

professor dave uplod video of favorski rearrangement

Can you explain how to use steric and electronic arguments to determine how certain molecules will undergo nucleophilic addition?

@ProfessorDaveExplains

6 жыл бұрын

well i pepper in that kind of analysis all through this series, but in general sterics discourage nucleophiles from approaching bulky portions of a substrate, and that's a kinetic effect, whereas electronics are more of a thermodynamic effect, because they tend to dictate what product has the lowest energy. i think i talk more about this in my zaitsev vs. hoffman clip.

The theme reminds me of fairy odd parents okay you're so cool!!!

when there is a tetrahedral geometry , is there is a specific rule that I can follow in order to know in what direction is each projecting group (wedge \dash)?

@ayarabie7571

6 жыл бұрын

another question , is the catalyst in a different phase than the substrate because the catalyst is always solid or what?

@ProfessorDaveExplains

6 жыл бұрын

wedge is coming at you, dash is pointing away. if the catalyst is a solid, that is heterogeneous catalysis, since its a different phase than the reactant which is in solution.

I had already commented in other video... Sorry haha but this is the right one I guess. Teacher please help me: when you have ethene and chlorine reacting occours and electrophilic addition. Why? Is there any video explanning this kind of reaction? I thought that would happen a homolytic addition, but no. Im from Brazil and in KZread I didnt find any video explanning this in my language so im trying to search in other languages. Could you help me please?

@ProfessorDaveExplains

7 жыл бұрын

pi bonds can act as nucleophiles! it's an addition reaction so it follows this kind of mechanism, specifically dihalogenation.

Good

Sir lecture on antarafacial and suprafacial

Hm...it seems as though you should have explained that although catalytic hydrogenation is stereospecific in the sense that the addition always occurs in a syn fashion, the syn addition can still occur on either face of the molecule and thus produce a mixture of enantiomers. Of course, in this case, a meso compound is formed and that discussion is irrelevant, but that's not always true.

@ProfessorDaveExplains

7 жыл бұрын

good point!

@SilverArro

7 жыл бұрын

Professor Dave Explains Your videos are really straightforward, clear, and useful by the way! So please don't take my first comment as a heavy criticism. It was just a thought I had while watching it.

Legendary intro XD

professor what do you mean by "stereospecific"?

@ProfessorDaveExplains

6 жыл бұрын

a reaction that produces only one stereoisomer out of a set of possible stereoisomers

Sir why addition of hydrogen is always syn

@ProfessorDaveExplains

5 жыл бұрын

this clip explains that, watch again!

i love you

Sir.. Actually my question is Nucleophile attack is Quantitative or Qualitative?? If either then how, reason!!😅

@ProfessorDaveExplains

6 жыл бұрын

sorry i don't understand the question!

@dewashishsolanke1621

6 жыл бұрын

Actually I read in a book which stated that, ' Attack of nucleophile is a fast step so every present nucleophile will attack on Carbocation that means nucleophilic attack is quantitative not qualitative' What does this mean??

@ProfessorDaveExplains

6 жыл бұрын

That doesn't really mean anything, I would disregard whatever source you got that from.

@dewashishsolanke1621

6 жыл бұрын

Professor Dave Explains Okh!!Tysm 💙

Professor dave ,can you explain what markownikoffs rule ?

@ProfessorDaveExplains

5 жыл бұрын

check out the next tutorial after this one in the playlist, i talk all about that!

@harimenon7316

5 жыл бұрын

Thank you professor dave,you are awesome

thank you, greetings from Ukraine

Thanks Jesus 🔥

Your face is same as Indian filmy hero Ranbir kapoor

@ahona3658

3 жыл бұрын

😂🤣🤣🤣🤣🤣🤣

I know this is super corny but...chemistry Jesus died for our Syns!

People keep saying he looks like Jesus . Am I the only one who thinks he looks like Fidel Castro ?

thanks bro really helpful but cover ur chest hair please

@ProfessorDaveExplains

7 жыл бұрын

never! i am a proud, hairy, italian man.

Hindi main bol Hindi mein goora ❤❤ bura mutt maan bhi vasa bhi tu bura maankar kar bhi kya loga 😂😂😂😂🎉