stereochem question,,,,,,!!

[davedefunk]

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okay guys this question is taken out of topscore -test 2- number 90.

when (S)-2-iodobutane is reacted under SN2 coniditons with methanol, what will be the major product?


CH3
|
H3CO- C-H
|
C2H5

In general im not sure when we switch from R conig to S config....

please help me out!

 

[davedefunk]

the structre doesnt come out right...when i post it...

methyl and C2H5 should be joined with the middle carbon.....

 

[jojovavavoom]

I still do not understand what the chemical compound looks like. hehe

 

[mmapcpro]

        CH3
         |
H3CO- C-H
         |
        C2H5

is this sort of what you were trying to diagram?

 

[jojovavavoom]

then its "R" ,always an inversion of configuration in SN2 rxns

 

[davedefunk]

ok i think i got it....i knoew about the inversion of config...during an SN2 rxn...but i was aware of the stereochem rules...on how you have to switch the lowest prorirty group facing away from you....thanks guys