Question- The lindlar catalyst is used to stop the hydrogenation of an alkyne at the alkene product. What would be the product of this reaction when the alkyne is 3-heptyne? Write the equation and show the stereochemistry of the product.
As an alternative to the stereochemistry of the alkene that results from the use of the lindlar catalyst in the question above, the opposite stereochemistry is obtained when the alkene is treated with methallic Li is liquid ammonia. What product, with the correct stereochemistry, is obtained when 3-heptyne is the alkyne used?
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