Draw the structure of a dibromide that could be used to prepare the following alkyne via elimination. More than one dibromide may be possible. ох

Ketones and aldehydes react with sodium acetylide (the sodium salt of acetylene) to give alcohols, as shown in the following example: R1 ОН 1. НС—с: Na* R2 R1 R2 2. Нзо" HC Draw the structure of the major reaction product when the following compound reacts with sodium acetylide, assuming that the reaction takes preferentially from the Si face of the carbonyl group. • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • You do not have to explicitly draw H atoms. • If a group is achiral, do not use wedged or hashed bonds on it. CH3 CH

What are the following reagents that can be used to create this product? The starting material is a benzene ring.

Provide reagents/conditions to accomplish the following syntheses. Several steps are required in some cases. H2N NH2 Но TH. NH2 HO