Ethyltriphenylphosphonium bromide
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Ethyltriphenylphosphonium bromide
structure -
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CAS No:
1530-32-1
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Formula:
C20H20P.Br
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Chemical Name:
Ethyltriphenylphosphonium bromide
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Synonyms:
Phosphonium,ethyltriphenyl-,bromide (1:1);Phosphonium,ethyltriphenyl-,bromide;Ethyltriphenylphosphonium bromide;Triphenylethylphosphonium bromide;TEP;TEP (onium compound);SA 242;154489-89-1;1091590-86-1;2069974-11-2
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CAS No:
Ethyltriphenylphosphonium bromide Basic Attributes
371.25
370.048584
3599630
216-223-3
R85V84UL5V
60660
29310095
Characteristics
0
1.00440
White to off-white Crystalline Powder
198-201 °C
200 °C
H2O: 120 g/L (23 ºC)
Store below +30°C.
Safety Information
III
6.1
UN 3077 9/PG 3
2
22-51/53-36/37/38-21/22
61-36/37/39-26-36
Xn,N,Xi
Stable under normal temperatures and pressures.
P273-P301 + P310
H301-H411
|Danger|H301 (31.39%): Toxic if swallowed [Danger Acute toxicity, oral]|P261, P264, P270, P271, P273, P280, P301+P310, P301+P312, P302+P352, P304+P312, P304+P340, P305+P351+P338, P312, P321, P322, P330, P332+P313, P337+P313, P362, P363, P391, P403+P233, P405, and P501|Aggregated GHS information provided by 452 companies from 29 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Ethyltriphenylphosphonium bromide Use and Manufacturing
In a 1500 ml reaction flask, 54 g (0.5 mol) of ethyl bromide and210 g (0.8 mol) of triphenylphosphine and 1000 ml of toluene were added, Heated to reflux with stirring for 10 hours, the reaction was cooled to 50 ° C, A large amount of solid precipitated, suction filtered, the filter cake was washed with toluene (50ml * 3 times)The solid was dried in a vacuum oven at 50 ° C, Ethyl triphenylphosphonium bromide 170.4g, yield 91.8percent
Ethyltriphenylphosphonium Bromide (ETPB) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate. Ethyltriphenylphosphonium bromide acts as a reactant in the synthesis of D-amino acids from L-cysteine-derived thiazolidines, Leiodolide A through aldol reactions and Horner-Wadsworth-Emmons olefination. It is also used in the preparation of cycloalkanoindolines through diastereoselective intramolecular inimo-ene reactions. it is used as a reagent in solid-state metathesis polycondensation to prepare alkyl-dipropenylthiophene monomers. Mizoroki-Heck cyclization and cascading Tsuji-Trost cyclization reactions.
Phosphonium, ethyltriphenyl-, bromide (1:1): ACTIVE|PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.
Computed Properties
Molecular Weight:371.2
Hydrogen Bond Acceptor Count:1
Rotatable Bond Count:4
Exact Mass:370.04860
Monoisotopic Mass:370.04860
Heavy Atom Count:22
Complexity:247
Covalently-Bonded Unit Count:2
Compound Is Canonicalized:Yes
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Ethyltriphenylphosphonium bromide
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