Need help on simple O Chem questions

[AcesHigh]

Need some help on some very basic questions:

Name the carbon containing product:

What's the systematic name:

Name it:

Thanks

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[EddieIndy]

Nooooooooooooooooooooooooooooooooooooo!!! I don't want to take the MCAT again!!!

 

[LifetimeDoc]

The MCAT is over for me (permanently, hopefully with a good score from the April 2006 test). Will we really see these in medical school?

 

[AcesHigh]

It sucks, but.. any real answers? Anyone?

 

[Jimmy B]

Need some help on some very basic questions:

Name the carbon containing product:

Br is added to the carbon next to the double bond and then another double bond is formed by elimination to create a cyclic diene

What's the systematic name:

2-methyl-1,3 pentadiene

 

[Tanner82]

yeah its 2-methyl-1,3 pentadiene definitly for #2

and for the 1st one....

First NBS (N-Bromosuccinimide) always always always is an allylic bromination (in the presence of light & peroxides, or CCl4), so we add Br at an allylic site (Displaces an Alpha hyderogen).

Then KOC(CH)3, being a large, stong, sterically hindered base... undergoes an E2 reaction, kicking off the Br we just added and forming the oh so stable conjugated double bond. Giving 1,3 cyclohexadiene....

gotta love organic...

-Danny T