You explain great. I'm from Germany and I'm learning for the abitur. There are no good german videos about this topic, so i decided to watch yours, and i understood everything. Thanks !
holy shit, didnt know stuff like that is needed for the chemistry abitur. have to study this for ochem at university (biology) and i actually think its pretty hard...only had chemistry lessons until 10th grade though
Thank you so much - once again, you've made a complex topic so clear. I love augmenting my class material with your videos. and they've been a lifesaver!
Yeah yeah i know i'm 4 years late but still dude. Your videos are making my study sessions easy. I recomended you and your channel to everyone in my class. We are all grateful. Keep up the awesome work, cheers from Turkey
Thanks for your videos !! I passed my orgo test last semester by watching all your videos for my final .. I have no idea how but I did !! And now I’m watching your videos for my midterm tomorrow :) thank you :) & I love your little jingle !!! It’s so cute !! :)
Midterm on Monday, did not pay attention in lecture. These videos are the most concise, info packed, and easy to follow than a lot of other videos. Thank you so so much for helping me get back on track!
I am literally in my final undergrad year at a top 20 uni somewhere in the top 25% of my Chemistry class, and this stuff completely escaped my mind! Professor Dave is a life saver
I am so thankful you have all of these videos! Trying to study for my organic two final and you are very clear and the reactions are starting to make sense. You're awesome!
but there are two ortho positions and only one para, so it's twice as likely statistically that a collision occurs at that position. the slight steric effect is what skews that ratio just slightly more in favor of para.
THANK YOU PROFESSOR DAVE this video explained this better than the past couple lectures I've had!! You're a life and grade saver, thanks for all your amazing hard work!
depends on the reaction, if either the substituent on the ring or the incoming electrophile is bulky then para is preferred, otherwise ortho might dominate since there are two positions vs. one para, but usually you just end up with a mixture of the two.
+Professor Dave Explains ah Okay I understand! I have an exam coming up in August and thanks to your help, I think I'm gonna nail it. You're really good at explaining things! my teachers always leave the important details out, and you don't bring up anything unimportant, it's like a puzzle and you're explaining all the missing pieces. I let you know if I passed the exam :-)
+Professor Dave Explains by the way, are these carbocayions intermediates like in SN1 reactions or are they different resonance structures of the products?
yep they are distinct intermediates. technically carbocations, though we call them arenium ion intermediates, quite a bit different due to the resonance.
I have a question, if we consider CF3 group in which carbon is attached to three flourine atoms so florine having excess of electrons should be able to donate electrons to the carbon atoms hence CF3 should become an electron donating group which would hence mean that it is an ortho para directing group. However, theres another concept that is bothering me, due to difference in the electronegativities in C and F, they form a polar bond where flourine attracts electrons towards itself because of greater electronegativity, this would mean that a positive charge is attained by the carbon atom and hence CF3 becomes electron withdrawing group or conversely meta director. Which one of these is right or is there a whole another concept?
yes the second thing you said is correct. fluorines will not donate to carbon. lone pairs donate by resonance, that carbon can't accept any more electrons by resonance. fluorines withdraw electron density by induction because they are highly electronegative. the carbon becomes very partially positive so it in turn withdraws from whatever it's on. CF3 is withdrawing.
just wanted to clarify that electron withdrawing group like carbonyl is a meta directing group (3 or 5 carbon atom). you had shown benzaldehyde with -E group substituted in the 2nd carbon (ortho) = i would assume this is unfavourable and would favour the -E group on the 3rd or 5th carbon (not shown) instead as it is the least energetically unfavourable as it does not form the 3rd carbocation adjacent to the directing group.
I am still so confused about the problem like synthesizing the aromatic compud with three substituents started from benzene. What should the sequnece of adding different direction substituent.
I always had confusion about this topic. Nobody had ever. Explained this in so simple manner . Loved the fantastic and concise explanation. Now I am able to solve opm directors very easily. Thanks a lot.
I almost cried out of happiness because I found your chanel
I just had this same thought as well
@Lochlan Noe i want to try, plz reply
Leave it to Gohan to worry about organic chemistry
lmaooo same I finally understood this wild ass topic that is called para ortho fuckery
Jesus can teach me ochem any day
What
how can someone be this clear? I mean it was so easy to understand as if I know it already
people like you make the world go round.... i got a orgo test in 10 hours and still learning muahahahaha
@Kim Clack asking after almost 2.5 years.hahahahahahahaha
@@alphagonist4748 He must remember, if it was a college degree he would remember if he got it or no xd
Hey how'd your exam go?
@@alphagonist4748 Haha, I just asked him five years after he wrote that comment!
@@PunmasterSTP nice
4:54 Ortho para directing
6:37 meta directing
You explain great. I'm from Germany and I'm learning for the abitur. There are no good german videos about this topic, so i decided to watch yours, and i understood everything. Thanks !
holy shit, didnt know stuff like that is needed for the chemistry abitur. have to study this for ochem at university (biology) and i actually think its pretty hard...only had chemistry lessons until 10th grade though
Same bro, I feel you.
@@Lumax96 How'd your university classes go?
@@PunmasterSTP ok after all. physical chem really effed me over, twice actually, but I finished my bachelors in 2020 :)
@@Lumax96 I'm glad to hear you got your degree! I took PChem too, and it was a beast.
Thank you so much - once again, you've made a complex topic so clear. I love augmenting my class material with your videos. and they've been a lifesaver!
I'm just curious; how have your classes been going?
Yeah yeah i know i'm 4 years late but still dude. Your videos are making my study sessions easy. I recomended you and your channel to everyone in my class. We are all grateful. Keep up the awesome work, cheers from Turkey
I'm two years later but I feel the exact same way!
I'm 9 yrs later and I too feel the same , from india
I wish you were my chem prof. in college. Awesome job!
Thank you sir for these organic chemistry classes . It is very helpfull during this lockdown periods..
From India
9 years later, this video saved my life
u r fantastic sir..deserve more subscribers
wait but how do you have 200+ subscribers? you have no videos haha
Thankful for people like you who take the time to make these kinds of videos 🙏🏻
my pleasure! pretty please subscribe! :)
Dude. you have a gift to make this seemingly daunting chemistry to be so damn easy.
So helpful! such clear explanations :D amazing work sir! thank you.
So clear and concise. Again, thank you so much for making these videos. I can't explain how helpful they have been!
Thank you, Chemistry Jesus.
By far the best explanation on this subject. Keep up the good work. Cheers!
Hello, why weak activating groups like alkyl groups still wins strong deactivating groups like R-NO2?
hello sir , your video's are great.all students don't get good teachers... but thank God I have got one...😄😂😂😇🙆👌👍👏👑
Dave you are a legend thank you so much.
This video is so informative and has been so helpful! Please keep up the good work! You are making a huge difference!
Absolutely brilliant! Thank you so much!!!!!
Much easier to understand than the ones in my own language. Thanks Jesus!
thanks sir you make organic chemistry so logical and easy to understand
This is so explanatory... I wish I found this explanation earlier. Keep up the awesome job!!!
he knows a lot about science stuff professor Dave explains
Professor Dave, I love you♥️
This stuff kept on confusing me since 3 years and today boom! I'm all clear with concepts 💪
we r just blessed to have you..... keep it up.....
Tooooooo helpful for my exam in 3 days on my birthday !!!!!
Thanks for your videos !! I passed my orgo test last semester by watching all your videos for my final .. I have no idea how but I did !! And now I’m watching your videos for my midterm tomorrow :) thank you :) & I love your little jingle !!! It’s so cute !! :)
Lol "It is the least energetically unfavourable" when I say this out loud it sounds so confusing
G-d bless you, Professor Dave
I am so glad I finally understood this! 🤘
you are a great teacher,thanks for ur classes
Midterm on Monday, did not pay attention in lecture. These videos are the most concise, info packed, and easy to follow than a lot of other videos. Thank you so so much for helping me get back on track!
I am literally in my final undergrad year at a top 20 uni somewhere in the top 25% of my Chemistry class, and this stuff completely escaped my mind! Professor Dave is a life saver
probably the best video i've seen till now...learnt the whole concept,,very thnkfull😊
Sir i am from India
Your lecture helps me a lot during lockdown to clear my basic concepts of chemistry
Love from India ❤️
Great work! thanks fa clearing my doubts ..
Thank you very much,Sir :)
thank you SIR, love from India
You deserve 10 Million Subs Least.
Love you Chemistry Jesus😁❤!!!!
I am so thankful you have all of these videos! Trying to study for my organic two final and you are very clear and the reactions are starting to make sense. You're awesome!
How'd your final go?
You're awesome! Thank you so much
shouldn't para nitro methyl have the highest production percentage? they have better symmetry right?
but there are two ortho positions and only one para, so it's twice as likely statistically that a collision occurs at that position. the slight steric effect is what skews that ratio just slightly more in favor of para.
THANK YOU SO MUCH! :)
I hope you create videos about Biochemistry next time. That'd be great!
+Jv Gamo biochemistry is coming next! probably over the summer.
Thank you so much prof. it was really good lucture.. I have organic chemistry exam tomorrow and that was really useful 😊. .
THANK YOU PROFESSOR DAVE this video explained this better than the past couple lectures I've had!! You're a life and grade saver, thanks for all your amazing hard work!
I Love this man
Simple, concise yet in-depth explanation of a difficult-to-grasp topic. Thanks for the much needed help (again). :)
This video makes organic chemistry so much sense!!! Wow!!
Iam bad in english but with your methode to explain , i inderstand , thank you professeur dave.
You are amazing sir... completely rocked the explanation..thanks for making such videos
you r doing greaaaat work sir....awesome explanation...a lot of respect for u sir
thanks professor it helps me a lot :)
well explained, thank you
great video, but how do you know if it's gonna be orto or para? or does it give both products?
depends on the reaction, if either the substituent on the ring or the incoming electrophile is bulky then para is preferred, otherwise ortho might dominate since there are two positions vs. one para, but usually you just end up with a mixture of the two.
+Professor Dave Explains ah Okay I understand! I have an exam coming up in August and thanks to your help, I think I'm gonna nail it. You're really good at explaining things! my teachers always leave the important details out, and you don't bring up anything unimportant, it's like a puzzle and you're explaining all the missing pieces. I let you know if I passed the exam :-)
+Professor Dave Explains by the way, are these carbocayions intermediates like in SN1 reactions or are they different resonance structures of the products?
+Freshev carbocations*
yep they are distinct intermediates. technically carbocations, though we call them arenium ion intermediates, quite a bit different due to the resonance.
wow this blew my mind, i understand now,
I have a question, if we consider CF3 group in which carbon is attached to three flourine atoms so florine having excess of electrons should be able to donate electrons to the carbon atoms hence CF3 should become an electron donating group which would hence mean that it is an ortho para directing group. However, theres another concept that is bothering me, due to difference in the electronegativities in C and F, they form a polar bond where flourine attracts electrons towards itself because of greater electronegativity, this would mean that a positive charge is attained by the carbon atom and hence CF3 becomes electron withdrawing group or conversely meta director.
Which one of these is right or is there a whole another concept?
yes the second thing you said is correct. fluorines will not donate to carbon. lone pairs donate by resonance, that carbon can't accept any more electrons by resonance. fluorines withdraw electron density by induction because they are highly electronegative. the carbon becomes very partially positive so it in turn withdraws from whatever it's on. CF3 is withdrawing.
@@ProfessorDaveExplains Thankyou so much!
why is it that you're better than my professor? THANK YOU
It's a great video! It even helped me in a chemistry competition ! Thank you very much for sharing the knowledge with us!
Thanks Sir for helping, i understood more about this Chap
Your explanations are extremely lucid. Couldn't be more thankful to you!🙏
You Aree superb❤
I understand literally every single point🥺💞❤
Idk if you check this comment but thank you so much professor dave😊
thank you sir! i m subscribing right now :) keep up with the great work
No sabes cuanto te amo barbudo. Por qué no tengo un profesor como tu? :( cierto, porque no soy gringa.
thank you so much! this was very helpful, really!
I wish you were my organic professor...
I had to miss class and I was able to catch up with this! thanks so much #lifesaver
Great work! thanks fa clearing my doubts ..
just wanted to clarify that electron withdrawing group like carbonyl is a meta directing group (3 or 5 carbon atom). you had shown benzaldehyde with -E group substituted in the 2nd carbon (ortho) = i would assume this is unfavourable and would favour the -E group on the 3rd or 5th carbon (not shown) instead as it is the least energetically unfavourable as it does not form the 3rd carbocation adjacent to the directing group.
I have a exam tomorrow and I was pretty unsure of this topic until I watched your video. Thank you so much!!1
This video is the most lucid I've seen on the topic, thank you very much.
I am still so confused about the problem like synthesizing the aromatic compud with three substituents started from benzene.
What should the sequnece of adding different direction substituent.
So helpful I was completely misunderstanding this concept
Watched it three times but finally got it!! Thank you so much Dave
please nucleophilic aromatic substitution, Thanks great videos
Do you know where I can find sources for the information in this video as I won’t be able to reference it in my assignments😭
Thanks a lot! Really helping us all out.
You are saving my butt
The best explanation so far on this topic!! Thanks a lot!
This was a BEAUTIFUL explanation.
Great work! thanks fa clearing my doubts ..
I always had confusion about this topic. Nobody had ever. Explained this in so simple manner . Loved the fantastic and concise explanation. Now I am able to solve opm directors very easily. Thanks a lot.
Great teaching...
Love from India ❤️❤️
God the halogen part is just so weird to me. The idea of a double bond to a chlorine just pisses me off.
It’s not that my professor is a and professor, it’s just that you’re a better explainer lok
great video, sir. it FINALLY clicked for me
is the whole directing group aspect only for electrophilic aromatic sub? or nucleophilic too
Thank you sir for this easily understandable explanation
thank god sir god bless you for saving my organic chemistry
For the Carbonyl im a bit confused I understand it must be meta but the group seems to be bonded in an ortho position
Great helpful video, thank you Pro Dave
I love you mahn.Your the only reason I'll graduate 😂
in the first slide, why is ortho product a major product as opposed to the para one?
I never meta Professor Dave video that I didn't like!
😎
thanks prof. dave you really make it easy to understand ...
Thank u sir well done 💞💕👍👌👍👌
Really nice video, I want you to be my professor
Sir pls why do halogen lack meta directors