fischer projection question

[predentgal]

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Acheiver says the answer is E but isn't A correct also??

http://img69.imageshack.us/img69/9272/73610830.jpg

 

[nainaaz]

choice A will be correct when it reads (R)-2-methyl-1-butanol instead of (s)

 

[herkulease]

choice A will be correct when it reads (R)-2-methyl-1-butanol instead of (s)

yup. Notice that the hydrogen is coming out so you'll have to flip it around.

It looks S but is really R.

 

[predentgal]

ok got it now..thanks

 

[UndergradGuy7]

No the compund looks like R but its really S. Look at this link.. I drew out what I'm talking about.

http://img442.imageshack.us/img442/6856/44829728.png

umm... I don't know if you just drew it sloppy, but the put the carbon in the middle as 3? The CH3 group on the right is supposed to be 3. So if you drew the circle around it would go from CH2OH to CH2CH3 to CH3 this would make it S. But since the H is going towards you and not away, it is the opposite. So R.

http://img690.imageshack.us/img690/9272/73610830.jpg
Numbers are in blue.