Professor Dave you deserve the best, you supply education to those who don’t understand in class and also those who can’t afford tutors all for free. There is no way I can thank you enough for all your help you are the reason I pass my exams thank you for your priceless help

The best lectures on KZread that I could find.. Straight to the point; very clear with the concepts and very very helpful. Thanks a lot sir. Keep going and all the very best..

Straight up had a dream Prof. Dave broke into my house at night to teach me physics

@ProfessorDaveExplains

4 жыл бұрын

That was no dream, buddy!

@ryantoth676

4 жыл бұрын

@@ProfessorDaveExplains Well, thank you for trying to explain Kepler's 3rd law at 4am

@skullmonkey6566

4 жыл бұрын

@@ProfessorDaveExplains 😂😂😂 that's scary

I discovered your channel recently and I feel lucky for that. Thank you very much. Words just can't describe how great your work is nor how much grateful all your followers ( me included) are.

I have no idea what you are talking about but you are the best at talking about stuff I have no clue about. Way to go Professor Dave you rock!

That’s why I love u professor Dave because I was searching about stereoselectivity vs stereospecificity and ur video came and helped me 💚💙💙💚

Good job 👏 professor Dave . You nailed it by explaining one of the crucial concept in a simple way.

Exactly the explanation I needed!! Thank you!

AMAZINGLY EXPLAINED... THIS HELPED A LOT... WILL NEVER FORGET FOR LIFETIME :) THANKS A LOT SIR

You are just brilliant Dave. All around well rounded guy. Thank you for being an awesome human!

Thankyou sir I actually wanted this for my JEE Mains april attempt preparation.... I got very less marks in my January attempt 😭

Lezione super chiara. Grazie mille❤️🙏🏻

Beautiful lecture, thanks prof ❤

wow it is very clear explanation. Thank you :)

As a JEE student, you Sir are my messiah!

Stereoselectivity/stereoselective: Stereoselectivity is the preferential formation in a of one stereoisomer over another. When the stereoisomers are enantiomers, the phenomenon is called enantioselectivity and is quantitatively expressed by the enantiomer excess; when they are diastereoisomers, it is called diastereoselectivity and is quantitatively expressed by the diastereomer excess. Reactions are termed (100%) stereoselective if the discrimination is complete or partially (%) stereoselective if one product predominates. The discrimination may also be referred to semiquantitatively as high or low stereoselectivity.

All hail Professor Dave. Teaches like a true Professor.

@chamomile3620

3 жыл бұрын

Plot twist: he's a REAL professor

I study Pharmaceutical Chemitry from Italy and I Love your video !!!

Great video!! Thank you

Dang, now that is going to be a lot to take in, but that is the upmost benefit if this informative channel. I was wondering, was there any news following the Space For Humanity application?

@ProfessorDaveExplains

4 жыл бұрын

not yet i think they announce finalists in a month or two!

@RC32Smiths01

4 жыл бұрын

@@ProfessorDaveExplains Ahh gotcha! Hope you get to fulfill your dreams man

Thank you sososo much!!

Love your style 😬

thanks alot dear professor .

nicely explained

Great lecture

Thank you so much sir❤️❤️❤️

I think i need more explain on the topic... Have a test in tweet from now..... @Professor Dave Explains

I am a MSc chemistry student your lecture really helped me😍Thank you sir

@rijojohn7218

Жыл бұрын

Sir plz make videos on the topic Prochirality-

Tank you sir.

Stereospecificity/stereospecific: (1) A reaction is termed stereospecific if starting materials differing only in their configuration are converted into stereoisomeric products. According to this definition, a stereospecific process is necessarily stereoselective but not all stereoselective processes are stereospecific. Stereospecificity may be total (100%) or partial. The term is also applied to situations where reaction can be performed with only one stereoisomer. For example the exclusive formation of trans-1,2-dibromocyclohexane upon bromination of cyclohexene is a stereospecific process, although the analogous reaction with (E)-cyclohexene has not been performed. (2) The term has also been applied to describe a reaction of very high stereoselectivity, but this usage is unnecessary and is discouraged.

ありがとうございます！

Nailed it👍

i wish he could have a million subs

Hello. First, I want to say that I like your channel very much (and I can see that this feeling is quite general among people). Secondly, I have to tell you that what you present here is a simplification of the real situation that leads to error. In principle, the term "regiospecific" doesn't exist because it is inconsistent with the definitions of "stereoselective" and "stereospecific". The reaction that you have presented is completely (100%) regioselective, but not regiospecific. I post here the IUPAC definitions:

Regioselectivity/regioselective: A regioselective reaction is one in which one direction of bond making or breaking occurs preferentially over all other possible directions. Reactions are termed completely (100%) regioselective if the discrimination is complete, or partially (%), if the product of reaction at one site predominates over the product of reaction at other sites. The discrimination may also semi-quantitatively be referred to as high or low regioselectivity. In the past, the term "regiospecificity" was proposed for 100% regioselectivity. This terminology is not recommended owing to inconsistency with the terms stereoselectivity and stereospecificity

I think it's important not to create confusion and not to misuse the well-defined terms. It's only my advice. Cheers, Dani

I used to make the volcano throw up good at the science fair! 😄👍⭐️

Your hair isn't long anymore!

@josephgrant1151

4 жыл бұрын

His hair looks great now!

@boobella899

4 жыл бұрын

Joseph Grant lies, it was sexy before

Thanks professor ❤️❤️❤️

BOOKS MENTION "REGIOSELECTIVITY" FOR ALKENES INSTEAD OF "REGIOSPECIFICITY" ?? Any reason for that ?

Great

Nice

Make a video about Quantum physics

@ProfessorDaveExplains

4 жыл бұрын

check my modern physics playlist

Is it possible voor a reaction to be regiospecefic and stereospecic at the same time?

@ProfessorDaveExplains

8 ай бұрын

yep

Allah ap ko kush rkhe

Look good after shaving, dude 😁

imagine this guy taught me a course, I would be a professor already.

Good

Please come to my university search about it (KFU - college of clinical pharmacy) Saudi Arabia

dang ur good!

Sir why can't we make an oxygen bomb

@pranavlimaye

4 жыл бұрын

Oxygen can only burn _other_ stuff, like some sort of fuel. Having only oxygen, we cannot produce a chemical explosion. Or do you wanna go NUCLEAR with oxygen? 😬 Well, the problem is: Oxygen is a LOT more resilient to nuclear reactions than Hydrogen. It will be very difficult to even START a chain reaction among atoms of Oxygen. By comparison, the Hydrogen bomb (which uses the H-2 and H-3 isotopes) is a lot more feasible.

hair!!!!!! also thank you for this!

sagapaw

First!

Beauty and Brain xD