Preparation of lactic acid derivatives and their use

Details Preparation of lactic acid derivatives and their use Preparation of lactic acid derivatives and their use

2007-05-01

2007-05-01

Witherspoon, Sikarl A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C549S274000, C512S012000, C426S536000

Reexamination Certificate

active

10523059

ABSTRACT:
The present invention relates to preparing lactic acid derivatives that are useful as odorants and monomers for polymer synthesis.

REFERENCES:
patent: 3280065 (1966-10-01), Langner
patent: 3351485 (1967-11-01), Langner
Andrus et al. Glycolate aldol reactions with boron enolates of bis-4-methoxyphenyl dioxanone. Tetrahedron Letters (2002), 43 (10), 1789-1792.
Andrus et al., “Anti-Selective Glycolate Aldol Additions with an Oxapyrone Boron Enolate,”Org. Lett., 2000, 2(19):3035-3037.
Bechtold et al., “Perfectly Alternating Copolymer of Lactic Acid and Ethylene Oxide as a Plasticizing Agent for Polylactide,”Macromolecules, 2001, 34:8641-8648.
Bischoff, “Ringester aus Äthylenglykol und aus Glycerin,”Chemische Berichten, 1907, 40:2803-2813.
Burke et al., “Polysubstituted Dihydropyrans via the Enolate Claisen Rearrangement. A Stereocontrolled Route toC-Pyranosides,”J. Org. Chem., 1984, 49(22):4320-4322.
Deng and Gross, “Ring-opening bulk polymerization of ε-caprolactone and trimethylene carbonate catalyzed by lipase Novozym 435,”Int. J. Biol. Macromol., 1999, 25:153-159.
Ebata et al., “Lipase-Catalyzed Transformation of Poly(ε-caprolactone) into Cyclic Dicaprolactone,”Biomacromolecules, 2000, 1(4):511-514.
Gross et al., “Polyester and polycarbonate synthesis by in vitro enzyme catalysis,”Appl. Microbiol. Biotechnol., 2001, 55(6):655-660.
Hall, Jr. and Schneider, “Polymerization of Cyclic Esters, Urethans, Ureas and Imides,”J. Am. Chem. Soc., 1958, 80(23):6409-6412.
Hollo, “Untersuchungen über den Einfluβ des Ring-Sauerstoffatoms auf die Reaktionsgeschwindigkeit gewisser Lactone,”Chemische Berichten, 1928, 61:895-906.
Kobayashi et al., “Lipase-Catalyzed Degradation of Polyesters in Organic Solvents. A New Methodology of Polymer Recycling Using Enzyme as Catalyst,”Biomacromolecules, 2000, 1(1):3-5.
Kumar and Gross, “Candida antarticaLipase B Catalyzed Polycaprolactone Synthesis: Effects of Organic Media and Temperature,”Biomacromolecules, 2000, 1(1):133-138.
Namekawa et al., “Enzymatic Synthesis of Polyesters from Lactones, Dicarboxylic Acid Divinyl Esters, and Glycols through Combination of Ring-Opening Polymerization and Polycondensation,”Biomacromolecules, 2000,1(3):335-338.
Namekawa et al., “Lipase-catalyzed ring-opening polymerization of lactones to polyesters and its mechanistic aspects,”Int. J. Biol. Macromol., 1999, 25(1-3):145-151.

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