orgo question.... kaplan?!!?!?

DATBooster | The Ultimate DAT Resource
This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.
J

JustwantDDS

DrAMG
10+ Year Member
Joined
Jan 2, 2010
Messages
664
Reaction score
0
x5e6mq.jpg


ummmm so it says u cant have a grignard with an alkyne but u can!!! it makes an acetylide!!!! right?????? at least thats what i got out of destroyer


kaplan's oc btw- super off in terms of DAT format style questions...
i think im going to stop doing their OC stuff :eek:
Members don't see this ad.
 
Sort by date Sort by votes
JustwantDDS said:
x5e6mq.jpg


ummmm so it says u cant have a grignard with an alkyne but u can!!! it makes an acetylide!!!! right?????? at least thats what i got out of destroyer


kaplan's oc btw- super off in terms of DAT format style questions...
i think im going to stop doing their OC stuff :eek:
Click to expand...

Well the way I solve this is first recognize that Grignard reagents would never react with an ether so the first thing I would do is look for an ether. Since it cannot react with an ether it will react with Chloride...its intended reaction to make R-Mg-X the other substituents are reactive with Grignard
 
Upvote 0 Downvote
JustwantDDS said:
x5e6mq.jpg


ummmm so it says u cant have a grignard with an alkyne but u can!!! it makes an acetylide!!!! right?????? at least thats what i got out of destroyer


kaplan's oc btw- super off in terms of DAT format style questions...
i think im going to stop doing their OC stuff :eek:
Click to expand...

Just know the problem in the destroyer and you will be fine. Source: I took the DAT :)
 
Upvote 0 Downvote
JustwantDDS said:
x5e6mq.jpg


ummmm so it says u cant have a grignard with an alkyne but u can!!! it makes an acetylide!!!! right?????? at least thats what i got out of destroyer


kaplan's oc btw- super off in terms of DAT format style questions...
i think im going to stop doing their OC stuff :eek:
Click to expand...

it has to do with acidity, the answer is not alkyne because the H off the alkyne is acidic and would prevent the grignard formation, meanwhile the O-CH3 is the ONLY choice that has no acidic protons, hence it will not hinder Gringard.
 
Upvote 0 Downvote
Members don't see this ad :)
JustwantDDS said:
x5e6mq.jpg


ummmm so it says u cant have a grignard with an alkyne but u can!!! it makes an acetylide!!!! right?????? at least thats what i got out of destroyer


kaplan's oc btw- super off in terms of DAT format style questions...
i think im going to stop doing their OC stuff :eek:
Click to expand...

You can react an alkyne with a grignard, yes. It's just an acid/base reaction. However, you can not form a grignard in the presence of an acidic proton or a reactive functional group (e.g. carbonyls).

As for this question, all of the other answers choices have acidic protons.
 
Upvote 0 Downvote
You must log in or register to reply here.
Next unread thread

Similar threads

M
  • Question
Do I need to take Orgo 2 before taking DAT?
Replies
5
Views
1K
DAT Destroyer
DAT Destroyer
D
  • Question
Bio/Orgo Topics on DAT?
Replies
4
Views
1K
Tyson_Brown
T
P
  • Question
Orgo 2 and DAT
Replies
3
Views
920
S_Diamond_DDS
S_Diamond_DDS
Naruto's Molar
  • Question
Kaplan Practice Test Scores vs Actual DAT Scores
Replies
5
Views
4K
CollinJ12
CollinJ12
R
  • Question
Kaplan Dat Self Paced Course
Replies
8
Views
1K
Rambunctious
R
Top