References
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- All new compounds gave satisfactory C and H combustion analysis and/or appropriate parent ion identification by high resolution mass spectrometry. Selected spectral data are given. 6 mp 92.0–93.0°C; IR (KBr) 3450, 1690, 1610 cm−1; 1H NMR (CDCl3) δ 1.75 (s, 3H), 2.47 (s, 1H), 4.07 (s, 2H), 4.60 (d, 2H), 5.72 (t, 1H), 6.25 (d, 1H), 6.75 (t, 1H), 6.83 (dd, 1H), 7.35 (dd, 1H), 7.62 (d, 1H). 7 mp 170.9–173.3°C (dec.); IR (KBr) 1720, 1690, 1610 cm−1; 1H NMR (CDCl3) δ 1.87 (s, 3H), 14.92 (d, 2H), 6.26 (d, 1H), 6.64 .(t, 1H), 6.75 (t, 1H), 6.83 (dd, 1H), 7.35 (dd, 1H), 7.62 (d, 1H), 9.43 (s, 1H). 8 IR (film) 3400, 1720, 1620 cm−1; 1H NMR (CDCl3) δ 1.52 (s, 6H), 1.86 (s, 3H), 3.24 (s, 1H), 3.42 (s, 1H), 4.60 (d, 2H), 4.82 (s, 1H), 5.88 (t, 1H), 6.25 (d, 1H), 6.64 (t, 1H), 6.75 (t, 1H), 6.83 (dd, 1H), 7.35 (dd, 1H), 7.62 (d, IH). 9 mp 132.6–133.8°C; IR (KBr) 3400, 1720, 1620J cm−1; 1H NMR (CDCl3) δ1.60 (s, 6H), 1.90 (s, 3H), 2.74 (s, 1H), 4.84 (d, 2H), 6.25 (d, 1H), 6.75 (t, 1H), 6.83 (dd, 1H), 7.18 (t, 1H), 7.35 (dd, 1H), 7.62 (d, 1H).
- Venturello , C. and D'Aloisio , R. 1977 . Synthesis , : 754 Andersen, S.H., Das, N.B., J⊘rgensen, R.D., Kjeldsen, G., Knudsen, J.S., Sharma, S.C., and Torssell, K.B.G., Acta Chem. Scand., 1982, 1.
- Goldschmidt , S. and Zoebelein , A. 1961 . Chem. Ber. , 94 : 169
- Arcadi , A. , Cacchi , S. , Marinelli , F. and Misiti , D. 1988 . Tetrahedron Lett. , 29 : 1457
- The purity was 90%, 3-hexen-2,5-dione being the byproduct.