Reaction scheme for total synthesis of the natural product Dried Bean Beetle, Male Sex Pheromone

Total synthesis of Dried Bean Beetle, Male Sex Pheromone:

Reference:	Descoins, C.; Henrick, C. A.; Siddall, J. B.. Tetrahedron Lett. 1972, 3777. DOI
Keywords:	O-H -> O-C(O)R • Acetal -> Enal • Aldehyde -> CarboxAcid • Mg-Alkynyl+Aldehyde • Cu-Alkyl+Propargyl-OAc • Allene synthesis •
Reagents:	Alkynyl-MgX • Acetic anhydride, Py • MnO₂ • Cyanide, sodium •