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| Quinoxaline Basic information |
| Quinoxaline Chemical Properties |
Melting point | 29-32 °C (lit.) | Boiling point | 220-223 °C (lit.) | density | 1.124 g/mL at 25 °C (lit.) | refractive index | nD48 1.6231 | Fp | 209 °F | storage temp. | 2-8°C | solubility | alcohol: freely soluble(lit.) | pka | 0.56(at 20℃) | form | Crystalline Low Melting Solid | color | Light yellow to brown | Water Solubility | SOLUBLE | Merck | 14,8078 | BRN | 109351 | Stability: | Light Sensitive | LogP | 1.320 | CAS DataBase Reference | 91-19-0(CAS DataBase Reference) | NIST Chemistry Reference | Quinoxaline(91-19-0) | EPA Substance Registry System | Quinoxaline (91-19-0) |
Hazard Codes | Xi | Risk Statements | 36/37/38-36/38 | Safety Statements | 26-36-37/39 | WGK Germany | 3 | RTECS | VD1225000 | Hazard Note | Irritant | TSCA | Yes | HS Code | 29339990 |
| Quinoxaline Usage And Synthesis |
Chemical Properties | light yellow to brown crystalline | Uses | Organic synthesis.
| Uses | Quinoxaline is a reagent used in the synthesis of quinoxaline diimides as small molecule non-fullerene acceptors for organic solar cells. | Definition | ChEBI: A naphthyridine in which the nitrogens are at positions 1 and 4. | Synthesis Reference(s) | Journal of the American Chemical Society, 69, p. 795, 1947 DOI: 10.1021/ja01196a015 The Journal of Organic Chemistry, 55, p. 1744, 1990 DOI: 10.1021/jo00293a014 Organic Syntheses, Coll. Vol. 4, p. 824, 1963 | General Description | Transition metal-free acylation of quinoxaline derivatives, by cross dehydrogenative coupling (CDC) reaction, were studied. | Purification Methods | Crystallise quinoxaline from pet ether. It crystallises as the monohydrate on addition of water to a pet ether solution. It has UV: at 242 and 331nm (Ho –2); 234 and 316nm (pH 7.1). The picrate has m 161-162o.[Albert & Phillips J Chem Soc 1294 1956, Beilstein 23 H 176, 23 II 177, 23 III/IV 1226, 23/7 V 135.] |
| Quinoxaline Preparation Products And Raw materials |
Raw materials | Sodium bisulfite-->o-Phenylenediamine-->Glyoxal-->QUINOXALINE, 6-BROMO-1,2,3,4-TETRAHYDRO--->5,8-DibroMoquinoxaline-->5-Bromoquinoxaline | Preparation Products | Olaquindox-->2,3-Pyrazinedicarboxylic acid-->2,3-Pyrazinecarboxylic anhydride-->1,2,3,4-TETRAHYDRO-QUINOXALINE-->6-Bromoquinoxaline |
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