Tripropylamine

Cumene hydroperoxide [95], benzoyl peroxide, or tert-h iiy peroxide [96]. can be used as accelerators with alkylboron initiators. The chain transfer constant for MMA to tributylborane has been estimated to be 0.647, which is comparable to tripropylamine [97]. 

TRIORTHOCRESYL PHOSPHATE TRIPHENYLTIN CHLORIDE TRIPHENYLTIN HYDROXIDE TRIPROPYL ALUHINUH TRIPROPYLAMINE... 

Catalysts show remarkable product variation in hydrogenation of simple nitriles. Propionitrile, in neutral, nonreactive media, gives on hydrogenation over rhodium-on-carbon high yields of dipropylamine, whereas high yields of tripropylamine arise from palladium or platinum-catalyzed reductions (71). Parallel results were later found for butyronitrile (2S) and valeronitrile (74) but not for long-chain nitriles. Good yields of primary aliphatic amines can be obtained by use of cobalt, nickel, nickel boride, rhodium, or ruthenium in the presence of ammonia (4J 1,67,68,69). 

Particularly, diisopropylamine and dibutylamine showed high o/t/io-selectivity. Addition of tertiary amines, such as triethylamine, tripropylamine, and tripentylamine was ineffective in the"ortAo-selectivity. In this system A-bromoamine never generates. 

The reagent titanocene dichloride reduces carboxylic esters in a different manner from that of 10-86, 19-36, or 19-38. The products are the alkane RCH3 and the alcohol R OH. The mechanism probably involves an alkene intermediate. Aromatic acids can be reduced to methylbenzenes by a procedure involving refluxing first with trichlorosilane in MeCN, then with tripropylamine added, and finally with KOH and MeOH (after removal of the MeCN). The following sequence has been suggested ... 

In contact with white fuming nitric acid, ignition delays for tributylamine, tripropylamine and triethylamine were less than those of the corresponding dialkylamines, and under good mixing conditions, butylamine did not ignite [1]. Triethylamine ignites on contact with the cone, acid [2],... 

Figure 3 Variation of ECL intensity with pH for the ECL reaction of tripropylamine with Ru(bpy)32+. (From Ref. 31.)...

Consideration should be given to the flow rate of the sample through the detection cell. Shultz and co-workers have demonstrated the wide variability in reaction kinetics between ECL reactions, and hence the influence of flow rate on ECL intensity [60], For example, the rate constants (k) of the Ru(bpy)32+ ECL reactions of oxalate, tripropylamine, and proline were calculated to be 1.482, 0.071, and 0.011/s, respectively. Maximum ECL emission was obtained at low linear velocities for slow reactions ranging up to high linear velocities for fast reactions. That is, the flow rate and flow cell volume should be optimized such that the light-emitting species produced is still resident within the flow cell, in view of the light detector, when emission occurs. 

DNA and tripropylamine. Alternatively, target DNA immobilized on the film could be determined by hybridization with a Ru(bpy)32+-labeled complementary DNA strand. 

Another type of sensor was based on the utilization of glucose dehydrogenase enzyme coupling with /ra(2,2 -bipyridylruthenium(II) complex [31]. This sensor can be used in the 10-2500-pmol/L concentration range. Several interferences occur, like NADH, oxalate, proline, and tripropylamine. However, gluconic acid and NAD+ do not interfere. 

When tripropylamine or tributylamine is used, mixed ZSM-5/ZSM-11 phases are formed. Their nature seems to be determined more by the zeolitic channel filling than by the location of the organic molecules at the channel intersections. 

When tripropylamine or tributylamine is used instead of the corresponding Alk N salt, ZSM-5/11 mixed phases (intergrowths ) are formed, suggesting that the Alk N species are less efficient in directing a specific structure. Unexpectedly, Bu N yields essentially a ZSM-5-rich phase while ZSM-11-rich phases are preferentially obtained with Pr N (XRD data). When an organic molecule acts as template towards (alumino)silicate species to form an ordered zeolitic framework, the latter is supposed to organize itself around the host organic species in such a way that a complete... 

Diphenylketene has been prepared by action of tripropylamine on diphenylacetyl chloride,2 by treating diphenylchloro-acetyl chloride with granulated zinc,3 and by the action of quinoline on diphenylacetyl chloride.4 It is most conveniently prepared by heating phenylbenzoyldiazomethane—a method first described by Schroeter5 and later used by Staudinger.6... 

Fig. 6.43. El mass spectra of tripropylamine (a) and tributylamine (b). For both compounds, the immonium ion series are completely present from m/z 30 onwards. Spectra used by permission of NIST. NIST 2002.

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