544
BRUSILOVSKII, KUZNETSOV
8. Bogastskii, A.V., Samitov, Yu.Yu., Gren’, A.I., and
Soboleva, S.G., Khim. Geterotsikl. Soedin., 1971, no. 7,
p. 893.
preparing model compounds, boric ester Xa and 1,3-
dioxane Xb, were obtained according to the procedures
[8, 17, 18].
9. Kuznetsov, V.V., Khim. Geterotsikl. Soedin., 2002, no. 8,
In the case of preparative isolation of 1,3-
dioxacycloalkanes a mixture of 0.1 mol of cyclic boric
ester Ia–VIIIa, 0.5 mol of paraformaldehyde, and 0.7 g
of anhydrous zinc chloride was heated to 130–150°C
and the target low-boiling product was distilled off. In
the analytic procedures a mixture of 0.01 mol of boric
ester IXa–XIIa, 0.05 mol of paraformaldehyde, and
0.5 g of the anhydrous ZnCl2 was heated at 130°C for
8 h with the intermittent sampling for GLC analysis.
p. 1149.
10. Kuznetsov, V.V., Khim. Geterotsikl. Soedin., 2002,
no. 10, p. 1453.
11. Vyakhirev, D.A. and Shushunova, A.F., Rukovodstvo po
gazovoi khromatografii (Handbook of Gas Chromato-
graphy), Moscow: Vysshaya Shkola, 1975, p. 129.
12. Kuznetsov, V.V. and Spirikhin, L.V., Zh. Strukt. Khim.,
2000, vol. 41, no. 4, p. 844.
13. Kuznetsov, V.V., Tereshchenko, A.V., and Gren’, A.I.,
Zh. Obshch. Khim., 1996, vol. 66, no. 2, p. 270.
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RUSSIAN JOURNAL OF GENERAL CHEMISTRY Vol. 81 No. 3 2011