Novel C19 trienes from abietic acid in fluorosulfonic acid

Jul 13, 1976 - spectrum (70 eV)m/e (rel intensity) 116 (5), 115 (51, M+), 114 (3), 86. (58), 85 (66), 43 (100). Acknowledgments. This research was sup...
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Farnum and Mader

214 J . Org. Chem., Vol. 42, No. 2, 1977 reduced under these conditions. The mixture was heated a t 45 "C for 16 h. The remaining Zn-Cu was removed by centrifugation and the supernatant liquid was added to water (100 ml) containing hydrochloric acid (0.5 ml). The water was extracted with pentane (4 X 2 ml), and the pentane was washed with 5% sodium bicarbonate solution and saturated sodium chloride solution. After drying with magnesium sulfate the product (0.285 g, 42%) was isolated by preparative GC (10 f t X 0.25 in. 5%OV-101 a t 45 "C): [ a ] D