Question

Specify a synthetic scheme that would produce the compound shown above in the fewest steps possible. Use one of the starting materials shown together with any of the available reagents. Give the number of the starting material followed by the letters of the reagents in the order of their use, for example: 3be. Starting Materials 0 0 Available Reagents a CH NaOC,H H,o', heat NaOH, H,o, then H,o",heat OH Specify a synthetic scheme that would produce the compound shown above in the fewest steps possible. Use one of the starting materials shown togethe with any of the available reagents. Give the number of the starting material followed by the letters of the reagents in the order of their use, for example 3be. Starting Materials Available Reagents a CH, H,o", heat

Answer 1

1) 2iaibj

Initially i deprotonate acetylene proton, which then attack on a.

Further Deprotonation by I which then attack on b and further hydrolysis give desired product.

2) 1igj

Deprotonation by i of 1 which then attack on g and hydrolysis give product.

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