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Communication | Special issue | Vol 10, No. 1, 1978, pp.111-116
Published online, 1st January, 1970
DOI: 10.3987/S-1978-01-0111
Synthesis of Optically Active 2-Ethyl-1,6-dioxaspiro[4.4]nonane(Chalcogran), the Principal Aggrega-tion Pheromone of Pityogenes Chalcographus (L.)

Kenji Mori,* Mitsuru Sasaki, Shigeharu Tamada, Toshio Suguro, and Satoru Masuda

*Department of Agricultural Chemistry, Faculty of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan


(2R,5RS)- and (2S, 5RS)-ethyl-1,6-dioxaspiro[4.4]nonanes (chalcograns) were synthesized in a simple manner by applying the recent technique of dianion chemistry.