Need help solving an organic chemistry question

[mrSHEiK124]

I've got a test on alkenes and alkynes coming up, third test of Organic I. I feel so disconnected from the text book and its examples, but I've absorbed most of the concepts and just need a really good resource for practice. Any help would be appreciated...

 

[mrSHEiK124]

yoohoooooooooooo

 

[mrSHEiK124]

Alrighty then, can I at least get some help with a specific problem?

Chapter8.png

The first one is easy, addition of a cyclopropane ring. I'd add methylene iodide, Zn, and CuCl and do that whole simmons-smith shit.

The third one I think I get too; H2SO4 in heat to remove the hydroxide and create a double bond, and then an alpha elimination with chloroform and a base to ionize it.

I can't get the second one. I know it's some combination of the above concepts, but I can't figure it out. Is it just CH2Br2 in a base, or would that not work?

 

[sao123]

sorry mate...
I dropped that class as soon as my prof said the words...
"you must memorize this list of all the reagents"


Problem solving I am willing to do... information regurgitation is not.

 

[DisgruntledVirus]

Ask Alkemyst...

 

[mrSHEiK124]

Originally posted by: sao123
sorry mate...
I dropped that class as soon as my prof said the words...
"you must memorize this list of all the reagents"


Problem solving I am willing to do... information regurgitation is not.

I'm starting to hate all of these courses, Organic, Bio II, etc. Funny how every other pre-med/pre-dental student I know has ridiculously hard time with Physics exams that are given with formula sheets; it just comes to me on those tests, I don't study and squeak away with an 80-90 that is T-scored to an A+.

 

[mrSHEiK124]

I got a 90 on a test with a 56 average :Q

Up until this point, my test average was a 54; I studied 2-4 hours for those exams, I studied three times as much for this one, somewhere between 12-16 hours.

And I was right in my assumption on how to solve the second problem; using CH2Br2 works fine, one Br- leaves and :CH2Br2 reacts with an alkene and a base to form a bromocyclopropane. Yay!

 

[SirStev0]

PreMed sucks and then you die (go to medical school)