AVDEENKO et al.
1772
8. Avdeenko, A.P., Konovalova, S.A., Burmistrov, K.S.,
Toropin, N.V., and Vakulenko, A.V., Russ. J. Org.
Chem., 2004, vol. 40, p. 962; Avdeenko, A.P., Marchen-
ko, I.L., and Konovalova, S.A., Russ. J. Org. Chem.,
2001, vol. 37, p. 72.
9. Avdeenko, A.P., Zhukova, S.A., Menafova, Yu.V., and
Yusina, A.L., Russ. J. Org. Chem., 2000, vol. 36, p. 808;
Avdeenko, A.P. and Menafova, Yu.V., Russ. J. Org.
Chem., 2006, vol. 42, p. 403.
2.7 Hz), 7.18–7.21 d.d (1H, 6-H); Z isomer (58%):
1.45 s (9H, t-Bu), 2.04 s (3H, CH3), 5.14 q (1H, NH),
6.65 d (1H, 5-H, J = 9.9 Hz), 6.96–7.00 d.d (1H, 6-H,
4J = 2.7 Hz), 7.06 br.s (1H, 2-H). Found, %: N 12.68,
12.80. C12H16N2O2. Calculated, %: N 12.72.
1-tert-Butyl-3-(2,6-dimethyl-4-oxocyclohexa-2,5-
dien-1-ylidene)urea (IVab). Yield 15%, mp 153–
1
155°C. H NMR spectrum, δ, ppm: 1.44 s (9H, t-Bu),
10. Avdeenko, A.P., Yusina, A.L., Menafova, Yu.V., and
Pirozhenko, V.V., Russ. J. Org. Chem., 1995, vol. 31,
p. 1386; Avdeenko, A.P. and Marchenko, I.L., Russ. J.
Org. Chem., 2001, vol. 37, p. 1587.
2.20 s (6H, CH3), 4.96 q (1H, NH), 6.37 s (2H, 3-H,
5-H). Found, %: N 11.85, 11.99. C13H18N2O2. Calculat-
ed, %: N 11.96.
11. Petersen, S., Gauss, W., and Urdschaft, E., Angew.
Chem., 1955, vol. 67, p. 217.
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RUSSIAN JOURNAL OF ORGANIC CHEMISTRY Vol. 44 No. 12 2008