Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1998-06-02
2000-11-07
Padmanabhan, Sreeni
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568315, 568346, 568347, 568388, 568391, C07C 4545
Patent
active
061439355
ABSTRACT:
The condensation reaction of a ketone with either an ester or a carbonate to form, respectively, a 1,3-diketone or a .beta.-ketoester often affords poor results under the standard condensation reaction conditions. High yields and high purities of the desired product can be obtained by performing the reaction using an alkoxide base in DMSO as the sole solvent.
REFERENCES:
patent: 3845133 (1974-10-01), Cohen
patent: 4175012 (1979-11-01), MacKay et al.
patent: 5344992 (1994-09-01), Drewes
patent: 5618982 (1997-04-01), Gilbert
Spitzmiller, Erwin R., "2-Thio-6-cyclopropyl-uracil", J. Am. Chem. Soc., vol. 69, p. 2073 (1947).
Bloomfield, J.J., "Acylation of Ketones in Dimethyl Sulfoxide", J. Org. Chem., 27:2742-2746 (1962).
Anselme, J.P., "A Convenient and Practical Preparation of Dibenzoylmethane", J. Org. Chem., 32:3716-3718 (1967).
Hauser et al., "The Acylation of Ketones to Form .beta.-Diketones or .beta.-Keto Aldehydes", Organic Reactions, vol. 8, Chapter 3, pp. 59-196, John Wiley & Sons (1954).
Coombes et al., "On the Synthesis of 2-methylchromene-4-thione and 2-methyl-1-thiochromone", Phosphorous and Sulfur, vol. 14, No. 2, pp. 139-142 (1983).
Reid et al., "Addition of nitroalkanes to ortho-halo-nitrobenzenes. A new synthesis of 4-chloro-7-(trifluoromethyl)quinoline", Tetrahedron Letters, vol. 31, No. 8, pp. 1093-1096 (1990).
March, Jerry, "Advanced Organic Chemistry", John Wiley & Sons, Eds. New York, pp. 886-887 (1992).
Barlett, et al., "A Mild, Oxidative Nitro-to Carbonyl Conversion and a New Prostaglandin Synthon", Tetrahedron Letter, No. 4, pp. 331-334 (1977).
Boaz Neil W.
Coleman M. Todd
Blake Mike
Eastman Chemical Company
Gwinnell Harry J.
Padmanabhan Sreeni
LandOfFree
Process for the preparation of 1,3-dicarbonyl compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of 1,3-dicarbonyl compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 1,3-dicarbonyl compounds will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1643005