CYCLIZATION OF POLYENES XXI. SYNTHESIS OF <scp>Dl</scp>-INCENSOLE

Abstract

Abstract By treatment of dl-mukulol (III) with tetrabromocyclohexadienone (V, TBCO), bromo ether (VI) was obtained. The ether (VI) was converted to dl-incensole (IV) by the sequential reactions of isomerization with BF3-etherate, replacement of bromine atom of VII with OAc group followed by reduction with LiAlH4.