1-BROMO-2-BUTYNE

Bezeichnung:1-BROMO-2-BUTYNE

CAS-Nr3355-28-0

Englisch Name:1-BROMO-2-BUTYNE

CBNumberCB0363349

SummenformelC4H5Br

Molgewicht132.99

MOL-Datei3355-28-0.mol

1-BROMO-2-BUTYNE physikalisch-chemischer Eigenschaften

Siedepunkt	40-41 °C/20 mmHg (lit.)
Dichte	1.519 g/mL at 25 °C (lit.)
Brechungsindex	n20/D 1.508(lit.)
Flammpunkt	97 °F
storage temp.	Inert atmosphere,Room Temperature
Löslichkeit	Miscible with acetonitrile.
Aggregatzustand	Liquid
Wichte	1.519
Farbe	Clear pale yellow-greenish
BRN	605306
InChIKey	LNNXOEHOXSYWLD-UHFFFAOYSA-N
CAS Datenbank	3355-28-0(CAS DataBase Reference)

Sicherheit

R-Sätze:	10
S-Sätze:	16-24/25
RIDADR	UN 1993 3/PG 3
WGK Germany	3
F	10-23
HazardClass	3
PackingGroup	III
HS Code	29033990

Gefahreninformationscode (GHS)

1-BROMO-2-BUTYNE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
Chemische Eigenschaften
Clear pale yellow-greenish liquid
Verwenden
1-Bromo-2-butyne is used in the preparation of six to eight annulated ring compounds in reaction with indoles and pseudopterane (+/-)-Kallolide B, which is a marine natural product. Further, it acts as a precursor in the preparation of axially chiral teranyl compounds, alkylation of L-tryptophan methyl ester, 4-butynyloxybenzene sulfonyl chloride and mono-propargylated diene derivative. In addition to this, it is also used in the synthesis of isopropylbut-2-ynylamine, allenylcyclobutanol derivatives, allyl-[4-(but-2-ynyloxy)phenyl]sulfane, allenylindium and axially chiral teranyl compounds.
synthetische
1-bromo-2-butyne is obtained by reacting 2-butyn-1-ol and organic solvent, pyridine.First react bromoethane with metal magnesium in THF to prepare Grignard reagent, then add paraformaldehyde to Grignard reagent for Grignard reaction, separate and recover after Grignard reaction 2-butyn-1-ol, then mix 2-butyn-1-ol with organic solvent and pyridine, add phosphorus tribromide dropwise for bromination reaction, separate and recover the product after bromination reaction.
Allgemeine Beschreibung
1-Bromo-2-butyne is a propargyl bromide derivative. It is one of the constitutional isomer of bromo butyne. Its Br-loss threshold photoionization breakdown diagram has been analyzed to derive dissociative photoionization thresholds to C₄H₅⁺ production. It participates in the preparation of linagliptin.

1-BROMO-2-BUTYNE Upstream-Materialien And Downstream Produkte

1-BROMO-2-BUTYNE Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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