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Timestamp: 2019-04-23 02:14:14+00:00

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Physical Data: Ba(OH)2.H2O, d 3.743 g cm-3. Ba(OH)2.8H2O, mp 78 °C; d 2.180 g cm-3.
Solubility: monohydrate is slightly sol water. Octahydrate is freely sol water and methanol, slightly sol ethanol; practically insol acetone.
Form Supplied in: monohydrate, white solid; octahydrate, transparent crystals or white masses.
Handling, Storage, and Precautions: poison; corrosive. May be fatal if swallowed, inhaled, or absorbed through skin. Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and skin.1 Incompatible with acids. Absorbs moisture and CO2 from air. Use only in a chemical fume hood. Avoid contact with eyes, skin, and clothing. Wash thoroughly after handling. Keep container tightly closed.
Partial Hydrolysis of Dimethyl Dicarboxylates.
Ketocarboxylic Acids from Ketodicarboxylic Esters.
Monocarboxylic Acids from Dicarboxylic Acid Anhydrides.
Reaction with a-Chlorolactams: a Stereoselective Favorskii-Type Ring Contraction.
Addition of Diethyl Malonate to Coumarin.
Synthesis of D2-Isoxazolines and D2-Pyrazolines.
Oxidation of Benzyl Halides to Benzaldehydes.
A Skeletal Rearrangement in a 6b,19-Oxido Steroid.
Removal of the N-Protecting Benzyloxycarbonyl Group.
1. For complete safety data on Ba(OH)2.8H2O, see The Sigma-Aldrich Library of Chemical Safety Data, 2nd ed.; Lenga, R. E., Ed.; Sigma-Aldrich: Milwaukee, 1988; Vol. 1, p 335C.
2. Barrios, J.; Marinas, J. M.; Sinisterra, J. V. BSB 1986, 95, 107.
3. Durham, L. J.; McLeod, D. J.; Cason, J. OSC 1963, 4, 635.
4. Miller, R. B.; Nash, R. D. T 1974, 30, 2961.
5. Danishefsky, S.; Hirama, M.; Gombatz, K.; Harayama, T.; Berman, E.; Schuda, P. F. JACS 1979, 101, 7020.
6. Henning, R.; Urbach, H. TL 1983, 24, 5339.
7. Conant, J. B.; Tuttle, N. OSC 1944, 1, 199.
8. Sinisterra, J. V.; Garcia-Raso, A.; Cabello, J. A.; Marinas, J. M. S 1984, 502.
9. Alcantara, A. R.; Marinas, J. M.; Sinisterra, J. V. TL 1987, 28, 1515.
10. (a) Garcia-Raso, A.; Garcia-Raso, J.; Campaner, B.; Mestres, R.; Sinisterra, J. V. S 1982, 1037. For a discussion on the mechanism of the Michael addition of active methylene compounds to chalcone, see (b) Iglesias, M.; Marinas, J. M.; Sinisterra, J. V. T 1987, 43, 2335.
11. Sinisterra, J. V.; Marinas, J. M. M 1986, 117, 111.
12. Sinisterra, J. V. React. Kinet. Catal. Lett. 1986, 30, 93.
13. Climent, M. S.; Marinas, J. M.; Sinisterra, J. V. React. Kinet. Catal. Lett. 1987, 34, 201.
14. Kohn, H.; Jung, S.-H. JACS 1983, 105, 4106.
15. Chorvat, R. J.; Bible, Jr., R. H.; Swenton, L. T 1975, 31, 1353.
16. Sinisterra, J. V.; Mouloungui, Z.; Delmas, M.; Gaset, A. S 1985, 1097.
17. Alvarez-Ibarra, C.; Arias, S.; Banon, G.; Fernandez, M. J.; Rodriguez, M.; Sinisterra, V. CC 1987, 1509.
18. Stotter, P. L.; Hill, K. A. TL 1972, 4067.
19. Johnson, W. S.; Li, T.-t.; Faulkner, D. J.; Campbell, S. F. JACS 1968, 90, 6225.
20. Overman, L. E.; Sharp, M. J. TL 1988, 29, 901.

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