Ir. Trehan et al., SYNTHESIS VIA ULTRASOUND - A CONVENIENT SYNTHESIS OF 6-(4-TOLYL)HEPT-1-ENE AND 6-(2-OXO-4-METHYLCYCLOHEX-3-EN-1-YL)HEPT-1-ENE, Collection of Czechoslovak Chemical Communications, 59(8), 1994, pp. 1889-1891
6-(4-Tolyl)hept-1-ene (I) and 6-(2-oxo-4-methylcyclohex-3-en-1-yl)hept
-1-ene (II), monocyclic norsequiterpenes from aerial parts of South Af
rican Senecio digitalifolius, have been synthesized using ultrasonic w
aves and tandem phenylation reduction.