How can I compare the structural formula and Sawhorse projection of 2‐bromo‐3‐chlorobutane?

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Answer 1 · 2015-05-17T20:57:37

The structural formula of 2‐bromo‐3‐chlorobutane is

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It gives no stereochemical information.

You can find the general procedure for drawing sawhorse projections at this location.

The sawhorse structure is

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The methyl groups are at the ends of the vertical bonds, the Br atom is on C-2, and the Cl atom is at C-3.

Note that C-2 and C-3 are chiral carbons, so this is only one of the four possible stereoisomers of 2-bromo-3-chlorobutane.