how do we convert Fisher to New man?

[myair]

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I do not undrestand how do we convert Fisher to New man?
will some one explain please?

 

[doc3232]

This is really hard to explain here...
I will try.
So Lets say you have

A
B -+- C
D -+- E
F
Thats looks nice
So the +s where the two chiral carbons are the future newmanprojection centers.
Going clockwise: for the top one you will have B->C->A
Going clockwise: for the bottom one you will have D->E->F
Now you have an idea of what the Newman projection will look like.

I think it is something like that. Someone please correct me if I am wrong.

 

[myair]

thanks but I don't get it yet

 

[myair]

Going clockwise: for the top one you will have B->C->A
Going clockwise: for the bottom one you will have D->E->F

I thought one is counter clockwise and one is clock wise, no?

 

[doc3232]

Going clockwise: for the top one you will have B->C->A
Going clockwise: for the bottom one you will have D->E->F

I thought one is counter clockwise and one is clock wise, no?

nah, because you look at the molecule down the central carbons.
again hard to explain, but basically that you look at the molecule from one side. Look at it it from the bottom and straight up vertically.

 

[myair]

thanks alot bit it is Hardddddddddd why it does not make any sence to me??????????? 🙁

 

[myair]

Any bodyyyyyyyyy help plzzzzzzzzzzzzzzzzz

 

[alanan84]

I don't know if this is right but it's the way I see it. I would look at the fisher projection and try to see it as a sawhorse and then covert it to the newman.

So going to doc3232's example, B and C along with D and E will be the legs of the sawhorse projection, A and F would be like the head and tail respectively and the two chiral carbons would be the back. So then converting it to the newman is a little easier.

 

[PooyaH]

http://forums.studentdoctor.net/showthread.php?t=414000

 

[bigasianpianist]

word.