So my Ochem final is in three hours, and I don't know jack shit. Though, I've already taken my differential geometry and analysis finals, and I aced, and I'm good at physics, so this should be very easy, in comparison. It's chem, for christ's sake
Anyone got any pointers/tips? I need to learn Stereochemistry, Nomenclature of alkanes, alkenes, alkynes, Sn1, Sn2, E1, E2, Addition in alkenes, addition in alkynes, and their respective regiochemistry or whatever it's called. Also, conjugated pi bond mechs, and redox mechs. Finally, NMR, GC/MS, and IR.
I should just barely make it, I think
General Ochem thread
>>7719820
>I don't know jack shit
>this should be very easy
>Anyone got any pointers/tips?
>I should just barely make it
please tell us more
>>7719833
Well, it's chemistry
>>7719835
yet you don't know jack shit
>>7719820
I TRY TO MASTERBATE BUT I DONT HAVE ENOUG TO ONE AND WHEN I CUM IT ISNT WHOLE AND MY MASTERBATE IS FIRE
>so this should be very easy, in comparison. It's chem, for christ's sake
My first advice would be to stop thinking like this and take it more seriously in the future.
>>7719838
Yeah. I hate it when I masterbate only to have my masterbate become fire.
Once my cum was my masterbate and it was fire.
And how long do you have to do all this? If it's anything less than a solid 4-5 days MINIMUM you're fucked to be honest family, unless you pick up o-chem very quickly.
>>7719845
2 and a half hours
Reading the chapter summaries
So far so good with stereochem
>>7719837
well, it should be fucking easy compared to math and physics
Looking through nomenclature, and it's pretty simple
>>7719850
Honestly if you pull off anything higher than a 60 I'd be thoroughly shocked, unless the test was very basic or you had plenty of time.
Good luck!
>>7719850
>2 and a half hours
You are in for the ass reaming of your life.
Watch, the exam will be mostly little details you missed in class. That aren't in the textbook. Fuck my chem department
>>7719820
In the same boat. Got a chem final on thursday than im royally screwed for.
It's over IR/MS, 13C spectroscopy and NMR
Aaaaaaand im fucked.
I would also like a fast and easy way to learn how to interpret this counter-intuitive mess that people call a body of knowledge.
Just remember that Sn2 reactions don't invert stereochemistry and Sn1 reactions give selective products, should be fine.
>>7719932
Thanks, mate
>>7719920
you have plenty of time, dude
I learned IR and MS in 3 hours
NMR is a bitch, though.
>>7719852
but you said you did not know jack shit
how can you draw that conclusion? I don't think you're really using your brain here, child
>>7719932
Kek
>>7719820
>I should just barely make it, I think
Let us know how it goes anon.
God speed.
It's in a few hours and you haven't even looked at the addition reactions yet? Good fucking luck buddy.
>he's taking/ has finished his test by now
>he's realizing what a horrible mistake he made
>he made an organic thread saying "oh well naming the molecules is easy enough, I should be able to bang out the rest of the semesters material in 2.5 hours
L - O - fucking - L
>>7719820
How's that final going, buddy?
:^)
>>7720178
He literally died of shame in his seat. Don't expect him to return.
>>7720141
Fucking kek man, no rxn mechanisms and synthesis either how could he get anything but a 20
>>7719820
Just remember one thing and you'll be fine:
Positive and negative charges always repel each other.
>>7720466
But they attract each other.
>>7720468
You're thinking of magnets, in chem they definitely repel.
Not op but I just found out my final grade for O Chem dropped to an 88.2 because I did shitty on the final. Also being sick during finals sucks. Hold me /sci/
>>7720518
>88.2
So?
>>7719820
The naming alone could take you a week to memorize, honestly you might be fucked.
As a chem E, orgo is a pretty garbage class. Just memorizing rules of thumb and 50 other rules with no justification.
quikc guise my organometallics final is in 17 hours and I can't stop masturbating
what do i do?
>>7719820
because of your fucking disrespect i wish you to fail at this shit.
ye, mad cheme here
>>7720536
So that means my GPA takes a dive since a 89.4 is the same as a 79.5, they're both Bs and both add a 3 to your GPA.
>>7720660
Oh right, we don't use that system where I am from.
>acetone
>acetic acid
>acetylene
>acetate
Why
>>7719820
>chemistry
when will this meme die
>Positive and negative charges always repel each other.
>>7720466
>>7720491
>>7720468
Absolutely.
what the fucking hell happened, OP? You better fucking update us
>>7719820
Any pointers? learn your mechanisms. For NMR, use the DOU formula to guide you out.
Who here not studying pleb intro to o-chem and studying organic synthesis? I bought this book and it is quite interesting how the oxidation/reduction reagents you take for granted can be really specific towards a particular functional group. The organometallics chapter adds quite alot of versatility in terms of your ability to make a compound. Frankly I would have loved to have learned retrosynthesis the way they explain it here than they did when I took general Ochem
>>7719820
>he doesn't know nomenclature
>>7719820
Why are you taking differential geometry, analysis, physics, and organic chemistry?
OP is definitely fucking with us.
>>7720997
Looks interesting but expensive. Got any decent active torrents for it?
>>7721021
Sadly no, but its worth it, trust me. Here is one of the reactions they cover. I won't get into the details, but if you react the compound (2) with carbon monoxide, you end up replacing the boron species with a carbonyl species. You can basically couple alkenes with thexylborane
>>7721044
don't forget about migratory aptitudes
>>7721044
If you're just trying to couple alkenes, why not just use some flavor of palladium cross-coupling?
>>7721074
For alkyl boranes the migratory aptitude decreases in the order 1° > 2° > 3°. See: DOI:10.1021/jo026733e
>>7721082
Thats good to know. Thanks anon. :)
>>7719932
mfw
Well its official
I fucking failed
I absolutely despise this piece of shit class that consists of nothing but memorization. I managed to name comps and get stereochem, but I didn't even bother with the rest aside from sn1 and 2
>>7719932
FUCJ YOU YOU PIECE OF SHIT THOSE WERE LITERALLY THE ONLY MECHS I ANSWERED AND YOU MADE ME GET THE PRODUCTS WRONG
I GOT THREE WRONG, THANKS TO YOU, YOU MONGOLOID
>>7721262
For Christ's sake man its just organic chemistry. It takes like 3 hours before the test max. How could you fuck up?
>>7720935
Let me guess? You're a Computer Scientist?
>>7721262
top fucking kek
>>7721262
lol
i've been there OP
>>7721328
really come on man, if you can memorize this amount how can any class take you more than 10 hours a semester?
Seriously physics and maths is mostly application of the formula you are taught until 3rd year, they aren't by nature any harder than a multistep org chem problem...
>>7721498
Read OP's post again and maybe the joke will hit you
>>7719953
Because chmistry exams requires knowing, not thinking. Take an OChem class pls.
>>7721664
>Because chmistry exams requires knowing, not thinking
Take a phys chem class pls.
>>7719932
>>7721262
Fucking lol'd hard.
>>7721602
im too dumb, oh well
>>7721262
It's because your retarded.
>but muh topologies
can't even basic orgo.
>>7721262
but you said it should be easy, very easy
>>7721262
You're a fucking idiot m8
>>7721044
This reaction isn't bad, but the real problem is that your coupling reagent (thexyl borane) is inherently stoichiometric. CO isn't really fun either, but that's less important. There are better methods to make the desired ketone, IMO.
>>7721066
>>7721074
sp3 cross-coupling reactions are typically inaccessible to palladium because of competing beta hydride elimination. Nickel catalysts are helping to use sp3 coupling partners, but you'd need to read cutting edge papers (within the past 3-4 years) to find suitable conditions.
>>7720997
cheers mate.
Looks excellent.
I actually have my Orgo 1 final tomorrow.
I'm a bit loose on which product is favored after a redox reaction with say, NBS or CL2 and hv.
>>7721262
It takes ten seconds to google sn1 and sn2, I thought you said this was going to be easy
sn2 is for two steps at once and sn1 is for one at a time
>tfw Orgo final is at 10am tomorrow
>tfw its almost 11pm and I only know like 80 % of the material.
Am I gonna make it?
>>7723550
get off 4chan and yes
>>7723562
I can't stop fapping though
Also how would you determine if something is a good base for deprotination? Also, does aromatic stability lower Pka?
>>7719833
I laughed
>>7722165
Alkenyl halides and alkenes are not sp3 hybridized mate :)
Also how would you go about working with CO? I would assume you would run it through a gas container or generate it in a separate flask and transfer it to the reaction flask? And yeah you are right, there are better ways to form that ketone.
>>7723845
Look at the reaction proposed: they want to "couple" alkenes to form a ketone. In reality, though, it's a *reductive* coupling because direct coupling would give the doubly a,b-unsaturated ketone. If you wanted to just use palladium cross coupling to get to the same product, you would by default need to use sp3 centers beta hydride elimination becomes a problem) or commit to a two-step route.
>Got a 78 final average for Orgo I
Should I just off myself now /sci/?
>>7721716
I'm a chemist, I'm not offended. Ochem was easy for me. I don't think he's implying that chemistry in general is easy, just ochem.
>>7726078
1. Don't kill yourself.
2. 78 isn't complete shit. It's just slightly above average, so don't worry, person of recent African descent
