SN2, SN1, E2, and E1 reactions (4)

Organic chemistry: SN2, SN1, E2, and E1 reactions and mechanisms.

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(1) SN2
(2) Continued
(3) Continued. SN1
(4) Continued. Methyl, primary, secondary, tertiary, and quaternary carbons
(5) SN1 stereochemistry
(6) The effect of substitution on SN1
(7) The effect of nucleophile quality on SN2 and SN1
(8) E2
(9) Continued
(10) Oxygen nucleophiles
(11) E1
(12) Continued
(13) Continued
(14) Summary

Category:

Education

Tags:

• organic
• chemistry
• mechanisms
• SN2
• SN1
• E2
• E1
• reactions
• bimolecular
• unimolecular
• nucleophilic
• substitution
• elimination

[sasmadrid]

thanks a lot, I would love to have u as my prof, ur awesome...I finally get O chem, if it wasnt for u, I would've been lost!

THAAAAAAAAANKS!

[rowdyminer]

THAAAAANKS... omg its 1 am here in TX... i cant stop watching these vids, because now i like SN2, SN1, E1, E2 because i finally get it. my light bulb turned back on. thank you :)

[BigDually58]

good set of videos for finals

[ohgoodjoy]

@jjsearson I don't think you're supposed to do that because autoionization to H3O+ and OH- happens only to a small extent, so it wouldn't be a feasible reaction.

[jjsearson]

Could you have skipped the ----H20+ intermediate, and just used OH- as the nucleophile? (considering that water auto-ionises)

[rdrydr99]

you seriously saved my butt in my college Ochem class! Can't thank you enough for taking the time to not only make these videos but also making them available to everyone! Thank You Thank You Thank You!!

[tarheels31390]

@rahishg If we look at tert-butyl iodide (what we started with) it is sp3 hybridized but has 4 methyl groups attached which would rule out the possibility for a stereocenter. Hope that helped...

[tarheels31390]

@rahishg I am an organic chem student and by no means an expert! However I think this is one area I am comfortable in. In order to know where any stereo center is located you must check to see if the carbon in question is sp3 hybridized and has 4 different groups attached to it. In this case, if we know the reaction is going to be an Sn1 then we know there is going to be a retention in stereochemistry ( configurations will stay the same), that is if there is any stereocenters involved.

[rahishg]

im confused about how to know where is stereo center or not. plz reply on this comment, anyone!

[balandon1]

And your videos are actually making me feel like I can pass my exam tomorrow. Thank you!!!

[Ms12213]

I love chemistry but i was reconsidering doing it because the lectureres at my uni make no sense! but you ignited my love for chemistry again :D THANK YOU SO MUCH and may god bless you.