Question

Draw the structure of cis−jasmone, a natural product isolated from jasmine flowers, formed by treatment of alkyne a with h2 in the presence of the lindlar catalyst. click the "draw structure" button to launch the drawing utility. 1252a

Answer 1

Answer:

See below.  

Step-by-step explanation:

Hydrogenation of an alkyne in the presence of a Lindlar catalyst produces a cis-alkene.

Thus,treatment of the acetylenic cyclopentenone with hydrogen and Lindlar catalyst gives 3-methyl-2-[(Z)-pent-2-enyl]cyclopent-2-en-1-one

(cis-jasmone).