(a) Using models when necessary, draw a Newman projection and a sawhorse projection corresponding to the following lineand-

wedge structure. Project the C2–C3 bond, with carbon-2 nearer the observer, and simplify your structures by abbreviating large groups.

(b) In your Newman projection, rotate carbon-2 clockwise by 120° about the C2–C3 bond, and draw both sawhorse and lineand-wedge structures for the resulting conformation.

(c) In your Newman projection of part (a), rotate carbon-2 180° about the C2–C3 bond, and draw both sawhorse and line-andwedge structures for the resulting conformation.

Transcribed Image Text:

HO Η Η Η H3C IN s a mi B st HPONTOS HÒ H H H CH3