Journal of the Chemical Society. Chemical communications p. 906 - 907 (1987)
Update date:2022-07-29
Topics:
Whitby Richard
Kocienski, Philip
Sequential dialkylation of methoxypropadiene via the corresponding lithium derivatives gives 1,3-dialkylated methoxyallenes which undergo acid-catalysed ring closure to 1,7-dioxaspiro<5.5>undec-4-enes; by this route (6S*,9S*)-9-ethyl-1,7-dioxaspiro<5.5>undec-4-ene (15b) has been prepared which has previously been converted into talaromycins A and B.
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Doi:10.1021/jm00402a031
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