TRI PROPYLAMINE

AIPO4-5 molecular sieve (BET surface area, 299 m g ) used in this study was prepared by the method of Wilson et al. [1j. VjOg/AIPO -S samples were prepared by impregnating with aqueous solutions of ammonium vanadate after removing templating agent in the AIPO -S by calcining at 530°C. The samples were dried at 110 C for 24 h then calcined in air at 550°C for 2 h. VAPO -S was prepared from gel mixture of phosphoric acid, pseudoboehmite, vanadium pentoxide, tri-propylamine and water (1.3 PrjN x AljOj PjOj 40 HjO) by crystallization at 165°C for 3 - 7 days [7. ... 

Tertiary amines boost the reactivity of POCl3 in the substitution of hydroxy pyrimidines774. Thus 6-methyluracil is reacted with POCl3 in the presence of tri- -propylamine to yield 2,4-dichloro-6-methylpyrimidine, while triethylamine gives some amination products as well (equation 105)775. 

The ring/chain tautomeric equilibrium between (2-hydroxyphenylimino)phos-phorane (21a) and 1,3,2-benzoxazaphospholine (21b) has been studied in thirteen solvents by NMR spectroscopy [80b]. This equilibrium is shifted towards the ring-form (21b) in hydrogen-bond acceptor solvents e.g. tris- -propylamine, dimethyl sulfoxide), compared to inert solvents such as benzene or acetone. Therefore, depending on substituents and solvents, it is possible to prepare either iminophosphoranes or benzox-azaphospholines [80b]. 

An example of reaction type (c) in Table 5-4 is the well-known Menschutkin reaction [30] between tertiary amines and primary haloalkanes yielding quaternary ammonium salts. Its solvent dependence was studied very thoroughly by a number of investigators [51-65, 491-496, 786-789]. For instance, the reaction of tri-n-propylamine with iodomethane at 20 °C is 120 times faster in diethyl ether, 13000 times faster in chloroform, and 110000 times faster in nitromethane than in -hexane [60]. It has been estimated that the activated complex of this Menschutkin reaction should have a dipole moment of ca. 29 10 Cm (8.7 D) [23, 64], which is much larger than the dipole moments of the reactant molecules (tris- -propylamine 2.3 10 Cm = 0.70 D iodomethane 5.5 10-3 1 64 D) [64]. 

Ig k2 for the Menschutkin reaction of tri- -propylamine with iodomethane (Drougard and Decroocq) standard molar entropy change standard molar entropy of activation solvophobic power of a solvent (Abraham)... 

Cerveny et al. (69), attempted to apply the Drougard-Decroocq equation (34) to the data obtained in the hydrogenation of cyclohexene and 1-hexene on the catalyst 5% Pt on silica gel in 19 solvents. Since correlation of the reaction rates with the parameters of solvents x, originally obtained for the homogeneous Menschutkin reaction (88) between methyl iodide and tri-propylamine was unsuccessful, an analogous definition was used for the parameters x, which were to characterize the solvent with respect to its effect in heterogeneously catalyzed reactions ... 

The activation of the carboxylic acids can be achieved also with the Mukaiyama reagent (2-chloro-l-methylpyridinium iodide, see p 308). Carboxylic acids react with this reagent, tri- -propylamine and imines in dichloromethane to give azetidin-2-ones [9]. 

The submitters used tri- -propylamiiie obtained from Aldrich Chemical Company, Inc., and the checkers used tri- -propylamine obtained from Wako Pure Chemical Industries, Ltd., Japan. Both groups stored the reagent over Linde type 4A molecular sieves prior to use. 

Additional Correlations with (tt -I- Menschutkin Reaction Rates. The most extensive single source set of accurate reactivity data in pure solvents in the chemical literature is for the Menschutkin reaction of tri- -propylamine with methyl iodide at 20° C. 

Tri- -propylamine [102-69-2] M 143.3, b 156.5°, d 4" 0.757, n 1.419, pl 10.66. Dry the amine with KOH and fractionally distil it. Also reflux it with toluene-p-sulfonyl chloride and with KOH, then fractionally distil it. The distillate, after additon of 2% phenyl isocyanate, was redistilled and the residue fractionally distilled from sodium. It is a strong base. [Takahashi et al. J Org Chem 52 2666 1987, Beilstein 4 IV 470.]... 

Methylbutylamine Tri-Methylene Diamine a-Methylglucosamine 3-Methylglucosamine 3-Phenylamine Phenylethylamine Propylamine Di-Propylamine iso-Propylamine Tri-Propylamine... 

Later, both the methods have been studied and compared, the addition reaction of various diisocyanates and dithiols carried out in chlorobenzene/o-dichlorobenzene solution with tri- -propylamine [102-69-2] and DABCO (1,4-diazabicyklo[2.2.2.]octane, triethylene diamine, 2,2 -diazabicyclo[2.2.2]octane, TED, BACO) [280-57-9] as catalyst (eq. 5) and interfacial condensation of... 

C9H21N TRI PROPYLAMINE -46.899 1.1357E+00 -8.4797E-04 3.3979E-07 - 5.7551E-11 298 1500... 

In DNA sensors based on PtNP labels, capture of the PtNP-labeled target sequence at the cathode end of a BPE resulted in the catalytic reduction of dissolved oxygen and led to the oxidation of the ECL reporter Ru(bpy)3 and coreactant tri- -propylamine at the anode end. Since BPEs do not require direct contact with a voltage source, many BPEs can be controlled by the electric field... 

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