Y-Caprolactone

Olfaction, research in, 18 383-384 Olfactory membrane, 11 567 Olfactory perceptions, 11 510-511 Olfactory receptors, 18 383-384 Olfactory response, 11 566-567 01igo(2-propenyloxy)methyloxyirane, sulfonation of, 23 720 Oligocyclic lattice host inclusion compounds, 14 177-179 Oligocyclic lattice hosts, 14 177 01igo(y-caprolactone)dimethylacrylate, in shape- memory polymer networks, 22 364... 

Polycatenanes, 17 60 Poly(y-caprolactone)dimethylacry, in shape-memory polymers, 22 357 Poly(y-caprolactone)/OMLS nanocomposite, 20 311 Poly(y-caprolactone) switching segment, in shape-memory polymers, 22 362-363 Polychlorinated biphenyls (PCBs),... 

Research Focus Enhancing the fracture toughness of poly(L-lactide-co-glycolide) by introducing phase separation using y-caprolactone. 

Two terpolymers of poly(L-lactide-co-glycolide) were prepared in this application that had enhanced fracture toughness by incorporating -y-caprolactone by ring-opening polymerization using either stannous octoate or stannous trifluoromethane sulfonate as the catalyst. The products synthesized by this method were ... 

A reaction kettle equipped with mechanical stirrer was placed in a glove box filled with nitrogen and heated to 120°C for 1 hour to remove moisture. The reactor was then charged with glycolide (200 g), y-caprolactone (200 g), 0.27 ml dodecanol, 700 ml of xylene, and 1.12 ml of stannous octoate and where glycolide component was added over four portions in 2-hour intervals. The mixture was then stirred at 120°C for 90 hours and the product isolated after dissolving in chloroform and precipitated in methanol. 2... 

Preparation of poly[(glycolide-co-y-caprolactone)-ft-(i.-lactide-co-glycolide)... 

Fleterocyclics Sotolon [3-hydroxy-4, 5-dimethyl-2-(5H)-furanone] y-Nonalactone [dihydro-5-pentyl-2-(5H)-furanone] y-Caprolactone [dihydro-5-ethyl-2-(3A7)-furanon]... 

The multi-purpose chiral synthon (R)-l-benzyloxy-3-buten-l-ol (211) can be prepared in high yield from 209. Treatment of 209 with activated zinc in refluxing ethanol results in the facile elimination of iodide to provide 211 in nearly quantitative yield. The utility of 211 is illustrated by the synthesis of (R)-ethyl-5-benzyloxy-5-formylpentanoate (212), a useful synthon for the preparation of arachidonic acid metabolites, and (R)-y-caprolactone (213), a pheromone of the Trogoderma species. The corresponding (S)-214 is conveniently prepared from D-tartaric acid based on similar transformations [77] (Scheme 49). 

Caprolactone. See c-Caprolactone monomer 5-Caprolactone. See 5-Hexalactone e-Caprolactone. See c-Caprolactone monomer y-Caprolactone. See y-Hexalactone Caprolactone/dimethylsiloxane/caprolactone block copolymer CAS 120359-07-1 Classification Carbinol-terminated polydimethylsiloxane... 

Synonyms y-Caprolactone Ethyl butyrolactone y-Ethylbutyrolactone 2(3H)-Furanone, 5-ethyldihydro- y-Hexanolactone Hexanolide-1,4 Hexan-4-olide 4-Hydroxyhexanoic acid lactone 4-Hydroxyhexanoic acid y-lactone Tonkalide Classification Nonaromatic lactone Empirical C6H10O2... 

Lactide and y-caprolactone are copolymerized in the presence of a multifunctional polyol. For example, a diol such as ethylene glycol, may be included to produce a bifunctional hydroxyl terminated polymer, or a triol, such as trimethylolpropane, may be used to produce a trifunctional pol mier hydroxyl terminated polymer. 

In 2002, Viani s group reported the synthesis of both enantiomers of tri-fluoro-y-valerolactone and pentafluoro-y-caprolactone, which involved chiral y-fluoroalkyl-jS-sulfinylcarboxylic acids as intermediates." These latter were... 

Albertsson, 1999). In general, polyanhydrides of different structures form uniform blends with a single melting temperature. Low molecular weight PLA, PHB, and pol-y(caprolactone) (PCL) are miscible with polyanhydrides, while high molecular weight polyesters M > 10,000) are not compatible with poly anhydrides. 

HL 8-Membered lactone 8-OL 8-Octanolide HDL 16-Hexadecanolide MVL a-Methyl-5-valerolactone UDL 11-Undecanolide aMCL a-Methyl-e-caprolactone 8-DL 5-Decalactone y-BL y-Butyrolactone y-CL y-Caprolactone y-VL y-Valerolactone 5-VL 6-Valerolactone ... 

Five-membered, unsubstituted, lactone y -butyrolactone (y-BL) was polymerised by PPL or PCL [74, 81] into small oligomers with a DP of 8-11. More recently, y-BL have yielded homopolymers of up to 50,000 [82]. Poly(y-butyrolactone) is a very useful biomaterial, since its degradation gives y-hydroxybutyric acid, a metabolite naturally occurring in the body. In the PSL-catalysed polymerisation of y-valerolactone (y-VL) and y-caprolactone (y-CL), less than 10% conversion was observed at 60 °C for 480 h [76]. 

The following compounds are discussed as contributors to the aroma myrcene, limonene, p-cy-mene, terpinolene, a-terpineol, geranial, geran-iol, linalool, acids (acetic and 2-methylbutyric acids) alcohols, e. g., trans-2-hexenol and a number of y- and 8-lactones, e. g., y-caprolactone. 

---