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2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE

2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE Struktur
29166-72-1
CAS-Nr.
29166-72-1
Englisch Name:
2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE
Synonyma:
BTMG;EOS-61801;2-terchotyl-11,3,3-tetramethylamine;2-TERT-BUTYL-1,1,3,3-TETRAMETHYL-GUANIDI;2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE;N''-tert-butyl-N,N,N',N'-tetramethylguanidine;N''-tert-butyl-N,N,N',N'-tetramethylguanidine;3H-Pyrazol-3-one,1,2-dihydro-1-(5-methylethyl)-;2-tert-Butyl-1,1,3,3-tetraMethylguanidine >=97.0% (GC);Guanidine, N''-(1,1-diMethylethyl)-N,N,N',N'-tetraMethyl-
CBNumber:
CB5464951
Summenformel:
C9H21N3
Molgewicht:
171.28
MOL-Datei:
29166-72-1.mol

2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE Eigenschaften

Siedepunkt:
88-89 °C/43 mmHg (lit.)
Dichte
0.85
Brechungsindex
n20/D 1.457
Flammpunkt:
65 °C
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
Aggregatzustand
clear liquid
pka
13.81±0.70(Predicted)
Farbe
Colorless to Light yellow
BRN 
2352408
InChIKey
YQHJFPFNGVDEDT-UHFFFAOYSA-N
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher C
R-S?tze: 22-34
S-S?tze: 26-36/37/39-45
RIDADR  UN 3267 8/PG 2
WGK Germany  3
10-34
HS Code  2925.29.7000
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictograms
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P270, P301+P312, P330, P501
H314 Verursacht schwere Ver?tzungen der Haut und schwere Augensch?den. ?tzwirkung auf die Haut Kategorie 1B Achtung GHS hazard pictogramssrc="/GHS05.jpg" width="20" height="20" /> P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Sicherheit
P260 Dampf/Aerosol/Nebel nicht einatmen.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P303+P361+P353 BEI BERüHRUNG MIT DER HAUT (oder dem Haar): Alle kontaminierten Kleidungsstücke sofort ausziehen. Haut mit Wasser abwaschen oder duschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.

2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R22:Gesundheitssch?dlich beim Verschlucken.
R34:Verursacht Ver?tzungen.

S-S?tze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).

synthetische

To an ovendried, 500-mL, three-necked, round-bottomed flask, equipped with a nitrogen inlet with gas bubbler, magnetic stirring bar, thermometer, condenser, and a 250-mL dropping funnel, were added triphosgene (14.8 g, 0.05 mol) and anhydrous toluene (120 mL). The mixture was kept under argon and cooled to ca. 10 C° with the aid of an external ice bath. A solution of N,N,N,N-tetramethylurea (18.0 mL, 0.15 mol) in dry toluene (50 mL) was then slowly added over a period of 30 min. After completion of the addition, the mixture was allowed to warm to ambient temperature, and stirring was continued for a further 1 h. During this time, a white precipitate formed, consisting of the Vilsmeier salt. Then, tert-butylamine (47.3 mL, 0.45 mol) was slowly added to the mixture over a period of 30 min. After completion of the addition, the mixture was heated under reflux for 5 h and then cooled to room temperature. Anhydrous diethyl ether (200 mL) was added and the white precipitate was quickly removed by filtration. This precipitate had to be collected as quickly as possible to avoid hydrolysis to the starting urea. The precipitate turns pale-yellow if hydrolysis is occurring. In some instances, additional diethyl ether (300 mL) was needed to ensure complete transfer of the solids to the filtration apparatus. The precipitate was washed with a further quantity of anhydrous diethyl ether (300 mL) (the filtrate must be colorless, indicating that all impurities have been removed) and immediately dissolved in aqueous 25% sodium hydroxide solution (100 mL). The mixture was then extracted with diethyl ether (3 × 300 mL). The combined organic layers were dried (potassium carbonate), filtered, and the solvent was removed under reduced pressure. The resulting colorless liquid was purified by distillation (bp 88–89 C°/36 mmHg) to afford 18.7 g (73%) of 2-tertbutyl- 1,1,3,3-tetramethylguanidine 1779.

Allgemeine Beschreibung

2-tert-Butyl-1,1,3,3-tetramethylguanidine (Barton′s base) is an excellent alternative to traditional inorganic bases for promoting the coupling reaction.

2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

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  • 2-TERT-BUTYL-1,1,3,3-TETRAMETHYL-GUANIDI
  • 2-TERT-BUTYL-1,1,3,3-TETRAMETHYLGUANIDINE
  • Guanidine, N''-(1,1-diMethylethyl)-N,N,N',N'-tetraMethyl-
  • 2-tert-Butyl-1,1,3,3-tetraMethylguanidine >=97.0% (GC)
  • BTMG
  • EOS-61801
  • N''-tert-butyl-N,N,N',N'-tetramethylguanidine
  • 3H-Pyrazol-3-one,1,2-dihydro-1-(5-methylethyl)-
  • 2-terchotyl-11,3,3-tetramethylamine
  • 2-tert-Butyl-1,1,3,3-tetramethylguanidine/High quality/Best price
  • N''-tert-butyl-N,N,N',N'-tetramethylguanidine
  • 29166-72-1
  • Building Blocks
  • Nitrogen Compounds
  • Organic Building Blocks
  • Guanidines
  • Guanidines
  • Nitrogen Compounds
  • Organic Building Blocks
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