Dimethylmethoxymethylenmalonat
|
|
Dimethylmethoxymethylenmalonat Eigenschaften
- Schmelzpunkt:
- 40-44 °C
- Siedepunkt:
- 98 °C (0.5 mmHg)
- Dichte
- 1.2311 (rough estimate)
- Brechungsindex
- 1.4390 (estimate)
- Flammpunkt:
- 158 °C
- storage temp.
- Sealed in dry,Room Temperature
- Aggregatzustand
- Crystalline Solid
- Farbe
- White
- InChI
- InChI=1S/C7H10O5/c1-10-4-5(6(8)11-2)7(9)12-3/h4H,1-3H3
- InChIKey
- RHFZTBSULNJWEI-UHFFFAOYSA-N
- SMILES
- C(OC)(=O)/C(=C\OC)/C(OC)=O
- CAS Datenbank
- 22398-14-7(CAS DataBase Reference)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher | Xn | ||
---|---|---|---|
R-S?tze: | 43-36/38-22 | ||
S-S?tze: | 37/39-26-24 | ||
HS Code | 29171990 |
Bildanzeige (GHS) |
![]() ![]() |
|||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alarmwort | Warnung | |||||||||||||||||||||||||||||||||||||||||||||||||
Gefahrenhinweise |
|
|||||||||||||||||||||||||||||||||||||||||||||||||
Sicherheit |
|
Dimethylmethoxymethylenmalonat Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R43:Sensibilisierung durch Hautkontakt m?glich.R36/38:Reizt die Augen und die Haut.
R22:Gesundheitssch?dlich beim Verschlucken.
S-S?tze Betriebsanweisung:
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S24:Berührung mit der Haut vermeiden.
Chemische Eigenschaften
white crystalline solidVerwenden
Dimethyl 2-(Methoxymethylene)malonate is a useful synthetic intermediate. It is used in preparation of (phenoxyethoxy)quinolones with antimalarial activities. It is also a reagent used in the synthesis of bicyclic pyridones prepn. as oral selective CB2 agonists with anti-pruritic activity.Synthese
264.2 g (2.0 mol) of dimethyl malonate, 637 g (6 mol) of trimethyl orthoformate and 20.4 g (0.2 mol) of acetic anhydride containing 2 g of H2 SO4 -activated bentonite were initially introduced into a reaction flask provided with a stirrer, thermometer, dropping funnel, column and reflux condensor, and the mixture was heated to boiling. 40.8 g (0.4 mol) of acetic anhydride was continuously metered for6 hours. The low boiling component formed was distilled off at a head temperature of 62° to 67° C. The bottom temperature increased slowly from 109° to 133° C. After 8 hours; the excess orthoester was distilled off at reduced pressure. 40.8 g (0.4 mol) of acetic anhydride was added to the remaining reaction mixture, and the mixture was heated at 140° C. for 2 hours. The catalyst was filtered off, and the crude product was distilled in vacuo. 330.4 g of dimethyl methoxymethylenemalonate (98% pure), having a melting point of 44° to 46° C., were obtained at 0.5 mbar and a head temperature of 110° C.Dimethylmethoxymethylenmalonat Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Dimethylmethoxymethylenmalonat Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 140)Lieferanten
Firmenname | Telefon | Land | Produktkatalog | Edge Rate | |
---|---|---|---|---|---|
DSHare Pharmaceutical Science Technology Co.Ltd. | +8613962878782 |
wei.zhu@dshare.com.cn | China | 42 | 58 |
Shenzhen Nexconn Pharmatechs Ltd | +86-755-89396905 +86-15013857715 |
admin@nexconn.com | China | 10406 | 58 |
Shanghai Worldyang Chemical Co.,Ltd. | +86-021-56795779 +8613651600618 |
sales@worldyachem.com | China | 1382 | 58 |
CONIER CHEM AND PHARMA LIMITED | +8618523575427 |
sales@conier.com | China | 49733 | 58 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
factory@coreychem.com | China | 29804 | 58 |
SHANGHAI T&W PHARMACEUTICAL CO., LTD. | +86-021-61551413 +8618813727289 |
contact@trustwe.com | China | 5745 | 58 |
Neostar United (Changzhou) Industrial Co., Ltd. | +86-0519-85551759 +8613506123987 |
marketing1@neostarunited.com | China | 8829 | 58 |
Kindchem(Nanjing)Co.,Ltd | +86-025-025-85281586 +8618651653755 |
sales@kindchem.cn | China | 1226 | 58 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 |
sales@tnjchem.com | China | 34563 | 58 |
Win-Win chemical CO., Limited | +86-0086-577-64498589 +86-15355981851 |
sales@win-winchemical.com | China | 14459 | 58 |
22398-14-7(Dimethylmethoxymethylenmalonat)Verwandte Suche:
Methyl-(triphenylphosphoranyliden)acetat
(2-Methoxy-2-oxoethyl)triphenylphosphoniumbromid
Methoxyammoniumchlorid
Dimethylmethoxymalonat
Dibutylmaleat
Dimethylmethylmalonat
Dimethylmalonat
Dimethylmethoxymethylenmalonat
Diethylethoxymethylenmalonat
- METHOXYMETHYLENEMALONIC ACID DIMETHYL ESTER
- DIMETHYL METHOXYMETHYLENEMALONATE
- MMMM
- Dimethyl methoxymethylenemalonate, 98+%
- Dimethylmethoxymethylenmalonat
- Propanedioic acid, 2-(methoxymethylene)-, 1,3-dimethyl ester
- 1,3-dimethyl 2-(methoxymethylidene)propanedioate
- Dimethyl 2-(methoxymethylene)
- Propanedioic acid, (methoxymethylene)-, dimethyl ester
- 2-methoxy-5,5-dimethyl-1,3-dioxane-4,6-dione
- DimethylMethoxymethylenemalonate>
- Dimethyl 2-(methoxymethylidene)propanedioate
- imethyl2-(methoxymethylidene)propanedioate
- DiMethyl 2-(MethoxyMethylene)Malonate
- thyl 2-(methoxymethylidene)propanedioate
- 1,3-Dimethyl 2-(methoxymethylene)propanedioate
- 2-Methoxymethylene-malonic acid dimethyl ester
- 22398-14-7
- fine chemicals