Bai Jun
1990
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Journal
Chinese Journal of Organic Chemistry
Abstract
2-Hexyl-5-methyl-1, 2-oxaborolane (4) prepared readily by treatment of a mixtureof methyl vinylketone and 1-hexene with borane-dimethylsulfide, reacted smoothyl with (di-chioromethyl) lithium to give intermediate (5) which upon oxidation with pyridinium chloro-chromate led to 2, 5-undecanedione. The latter afforded dihydrojasmone (7) via an intramole-cular condensation according to known procedure.