Short Enantioselective Syntheses of Both 2,7-Dimethyl-1,6-dioxaspiro[4.6]undecane and 2,7-Diethyl-1,6-dioxaspiro[4.6]undecane Using Functionalized Nitroalkane Synthons

Abstract
ω-Nitro ketoaliphatic compounds 3a and 3b, prepared by a new and efficient route, have been elaborated to short syntheses of both 2,7-dimethyl-1,6-dioxaspiro[4.6]undecane, [(2S,5R,7S)-1a] and 2,7-diethyl-1,6-dioxaspiro[4.6]undecane [(2S,5R,7S)-1b], the pheromones produced by Andrena haemorrhoa and Andrena wilkella, respectively.

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