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70384-51-9 - Tris(3,6-dioxaheptyl)amine, 95% - TDA-1 - Tris[2-(2-methoxyethoxy)ethyl]amine - L13544 - Alfa Aesar

L13544 Tris(3,6-dioxaheptyl)amine, 95%

Codice CAS
70384-51-9
Sinonimi
TDA-1
Tris[2-(2-methoxyethoxy)ethyl]amine

Dimensioni Prezzo ($) Quantità Disponibilità
5g 11,20
25g 37,40
100g 93,60
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Tris(3,6-dioxaheptyl)amine, 95%

MDL
MFCD00010748
EINECS
274-590-5

Proprietà chimiche

Formula
N(CH2CH2OCH2CH2OCH3)3
Peso formula
323.43
Punto di fusione
<-100°
Punto di ebollizione
163-171°/1mm
Punto di infiammabilità
162°(323°F)
Densità
1.011
Indice di rifrazione
1.4486
Sensibilità
Air Sensitive & Hygroscopic
Solubilità
Miscible with water.

Applicazioni

Tris(3,6-dioxaheptyl)amine acts as a phase transfer catalyst used in the preparation of 1,3-dideaza-2'-deoxyadenosine and related benzimidazole 2'-deoxyribonucleosides. It is also used as an intermediate in the synthesis of telithromycin. Further, it is used in the oxidation of arylmethanols under phase-transfer conditions. In addition to this, it acts as a cryptand during phase-transfer glycosylation of 2-amino-4-methoxy-7H-pyrrolo[2,3-d]pyrimidine.

Note

Air sensitive and hygroscopic. Incompatible strong oxidizing agents and strong acids.

Letteratura

Acyclic solid-liquid phase-transfer catalyst (see Appendix 2).

Solubilizes salts of alkali metals and of transition metals, e.g. PdCl2, RuCl3 and RhCl3, allowing these to be used in hydrogenation reactions: Synth. Commun., 19, 2833 (1989).

Forms isolable 2:1 complexes with Grignard reagents: Tetrahedron, 45, 171 (1989).

Accelerates dehydrobromination of alkyl halides in the presence of KOH: Org. Synth. Coll., 9, 539 (1998). For use in the Wittig reaction, see Cyclopropyl­triphenyl­phosphonium bromide, B25102.

Has been used in a number of aromatic nucleophilic substitution reactions:

In studies of solvent-free SNAr reactions, TDA-1 was found to be the best catalyst: Synth. Commun., 20, 2855 (1990); Heterocycles, 32, 1947 (1991). In combination with CuCl, is also a useful catalyst in the Ullmann aryl ether synthesis: J. Org. Chem., 50, 3717 (1985). An improved N-arylation of amides utilizes a catalyst combination of CuCl and TDA-1 (5:1): Synthesis, 312 (1989).

For use in a stereospecific glycosylation reaction of a pyrimidine base, see: Helv. Chim. Acta, 71, 1573 (1988).

Quick, M. P.; Wünsch, B. Synthesis of hydrogenated 2-benzazepin-1-ones by the addition of aryllithium intermediates to isocyanates. Tetrahedron: Asymmetry 2015, 26 (5-6), 276-280.

Li, H.; Pang, Z.; Gao, P.; Wang, L. Fe(III)-catalyzed grafting copolymerization of lignin with styrene and methyl methacrylate through AGET ATRP using triphenyl phosphine as a ligand. RSC Adv. 2015, 5 (67), 54387-54394.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H315-H319

Causes skin irritation. Causes serious eye irritation.

Dichiarazioni precauzionali: P280-P264-P305+P351+P338-P362-P321-P332+P313-P337+P313-P302+P352

Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Take off contaminated clothing and wash before reuse. Specific treatment (see label). If skin irritation occurs: Get medical advice/attention. If eye irritation persists: IF ON SKIN: Wash with plenty of soap and water.

Altri riferimenti

Beilstein
2369296
Codice tariffe armonizzato
2922.19
TSCA
Yes

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