(Ethoxycarbonylmethyl)triphenylphosphoniumbromid

Bezeichnung:(Ethoxycarbonylmethyl)triphenylphosphoniumbromid

Englisch Name:(Carbethoxymethyl)triphenylphosphonium bromide

CBNumberCB8684648

SummenformelC22H22BrO2P

Molgewicht429.29

Synonyma

(Ethoxycarbonylmethyl)triphenylphosphoniumbromid

(Ethoxycarbonylmethyl)triphenylphosphoniumbromid physikalisch-chemischer Eigenschaften

Schmelzpunkt	145-150 °C (dec.) (lit.)
storage temp.	Inert atmosphere,Room Temperature
Löslichkeit	Chloroform (Slightly), Methanol (Slightly)
Aggregatzustand	Crystalline Powder
Farbe	White
Wasserlöslichkeit	It is soluble in water.
Sensitive	Hygroscopic
BRN	3581273
InChI	1S/C22H22O2P.BrH/c1-2-24-22(23)18-25(19-12-6-3-7-13-19,20-14-8-4-9-15-20)21-16-10-5-11-17-21;/h3-17H,2,18H2,1H3;1H/q+1;/p-1
InChIKey	VJVZPTPOYCJFNI-UHFFFAOYSA-M
SMILES	[Br-].CCOC(=O)C[P+](c1ccccc1)(c2ccccc2)c3ccccc3
CAS Datenbank	1530-45-6(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36-24/25
WGK Germany	3
RTECS-Nr.	TA2299500
F	9
HS Code	29310095
Speicherklasse	11 - Combustible Solids

Gefahreninformationscode (GHS)

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
WHITE CRYSTALLINE POWDER
Verwenden
suzuki reaction
Verwenden
(Ethoxycarbonylmethyl)triphenylphosphonium bromide, is used as a pharmaceutical intermediate.
reaction suitability
reaction type: C-C Bond Formation
Synthese

Ethoxycarbonylmethyltriphenylphosphonium bromide was prepared as follows: ethyl acetate (5.0 L) was added to triphenylphosphonium, and ethyl bromoacetate (665 g, 4.01 mol) was added dropwise to the mixture with stirring, and after the dropwise addition the reaction mixture was stirred at room temperature for 24 hours. The mixture was then diafiltered and the filter cake was washed three times with ethyl acetate, using 500 mL each time. Vacuum drying of the filter cake gave ethoxymethyltriphenylphosphonium bromide [Ph 3 PCH 2 CO 2 Et]+Br- (1500 g) as a white solid in 92% yield.
läuterung methode
Wash it with pet ether (b 40-50o) and recrystallise it from CHCl3/Et2O and dry it in a high vacuum at 65o. [Isler et al. Helv Chim Acta 40 1242 1957, Wittig & Haag Chem Ber 88 1654, 1664 1955.]

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