8
54
MIRJALILI et al.
identified by their physical constants and spectral data
5. Sandberg, M. and Sydnes, L.K., Org. Lett., 2000, vol. 2,
1
p. 687.
(
IR, H NMR).
6
7
8
9
. Yadav, J.S., Reddy, B.V.S., and Srihari, P., Synlett,
001, no. 5, p. 673.
. Karimi, B., Ebrahimian, G.R., and Seradj, H., Synth.
Commun., 2002, vol. 32, p. 669.
. Smitha, G. and Sanjeeva, R., Tetrahedron, 2003,
vol. 59, p. 9571.
. Mirjalili, B.F., Zolfigol, M.A., and Bamoniri, A.H.,
Phosphorus, Sulfur Silicon, 2004, vol. 179, p. 19.
3
-Nitrobenzylidene diacetate. A mixture of
2
0
.453 g (3 mmol) of 3-nitrobenzaldehyde, 0.3 ml
(
(
3 mmol) of acetic anhydride, and 0.043 g
0.138 mmol) of Al(HSO ) was ground in a mortar
4
3
over a period of 5 min at room temperature. The prog-
ress of the reaction was monitored by TLC using
methylene chloride–petroleum ether (3:2) as eluent.
After 5 min, the conversion was more than 99%. When
the reaction was complete, the mixture was treated
with diethyl ether, the precipitate was filtered off, the
filtrate was washed with a saturated aqueous solution
1
1
1
1
1
0. Karimi, B., Seradj, H., and Ebrahimian, G.R., Synlett,
000, no. 5, p. 623.
2
1. Aggen, D.H., Arnold, J.N., Hayes, P.D., Smoter, N.J.,
and Mohan, R.S., Tetrahedron, 2004, vol. 60, p. 3675.
2. Ghosh, R., Maiti, S., Chakraborty, A., and Halder, R.,
J. Mol. Catal. A: Chem., 2004, vol. 215, p. 49.
3. Carrigan, M.D., Eash, K.J., Oswald, M.C., and Mo-
han, R.S., Tetrahedron Lett., 2001, vol. 42, p. 8133.
4. Curini, M., Epifano, F., Marcotullio, M.C., Rosati, O.,
and Nocchetti, M., Tetrahedron Lett., 2002, vol. 43,
p. 2709.
5. Jin, T.-S., Sun, G., Li, Y-W., and Li, T.-S., Green
Chem., 2002, vol. 4, p. 255.
6. Yadav, J.S., Reddy, B.V.S., Venugopal, C., and Rama-
lingam, T., Synlett, 2002, no. 4, p. 604.
7. Nagy, N.M., Jakab, M.A., Konya, J., and Antus, S.,
Appl. Clay Sci., 2002, vol. 21, p. 213.
18. Romanelli, G.P., Thomas, H.J., Baronetti, G.T., and
Autino, J.C., Tetrahedron Lett., 2003, vol. 44, p. 1301.
19. Firouzabadi, H., Iranpoor, N., Nowrouzi, F., and
Amani, K., Tetrahedron Lett., 2003, vol. 44, p. 3951.
20. Salehi, P., Khodaei, M.M., Zolfigol, M.A., and Sirous-
zadeh, S., Bull. Chem. Soc. Jpn., 2003, vol. 76, p. 1863.
21. Zolfigol, M.A., Ghorbani Choghamarani, A., Taqian-
Nasab, A., Keypour, H., and Salehzadeh, S., Bull.
Korean Chem. Soc., 2003, vol. 24, p. 638.
of NaHCO (2×25 ml) and water (30 ml), and the
3
organic phase was dried over anhydrous Na SO ,
2
4
filtered, and evaporated. Yield 0.58 g (86%), colorless
crystalline substance, mp 65–66°C; published data
[
12]: mp 64–66°C. The other acylals were synthesized
in a similar way.
The authors thank the Research Affairs at the Yazd
University, Bu-Ali Sina University, and Kashan Uni-
versity for the financial support to this work.
1
1
1
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RUSSIAN JOURNAL OF ORGANIC CHEMISTRY Vol. 43 No. 6 2007