2-methyl-l-propanal

Methyl-2-propanol, see sec-Butyl alcohol 2-Methylpropanol, see Isobutyl alcohol 2-Methylpropanol-l, see Isobutyl alcohol 2-Methyl-l-propanol, see Isobutyl alcohol 2-Methyl-l-propan-l-ol, see Isobutyl alcohol 2-Methyl-2-propanol, see ferf-Butyl alcohol... 

PDADMA = poly(dialIyldimethylammonium chloride), PSS = poly(styrenesulfonic acid), PAMPS = poly(2-acrylamido-2-methyl-l-propane sulfonic acid), and PFPVP = 4-vinyl-trideca-fluoro-octyl pyridi-nium iodide-co-4-vinyl pyridine. 

Conditions capillary columns, 100 pm i.d. x 30 cm active length stationary phase poly(butyl methacrylate-co-ethylene dimethacrylate) with 0.3 wt.% 2-acrylamido-2-methyl-l -propane-sulfonic acid mobile phase, 80 20 vol./vol. mixture of acetonitrile and 5 mmol/L phosphate buffer pH 7 UV detection at 215 nm voltage 25 kV pressure in vials 0.2 MPa sample concentration 2 mg/mL of each compound injection 5 kV for 3 s. Data shown are average RSD values obtained for thiourea, benzyl alcohol, benzaldehyde, benzene, toluene, ethylbenzene, propylbenzene, butylbenzene, and amylbenzene. 

Fig. Reaction of 2-methyl-l -propane with aqueous sulphuric acid. The same holds true for the organomercuric synthesis of alcohols ...

SYNS FEMA No. 2220 ISOBUTANAL ISOBUTYI ALDEHYDE ISOBUTYL ALDEHYDE (DOT ISOBUTYRALDEHYD (CZECH) ISOBUTYRIC ALDEHYDE 2-METHYLPROPANAL 2-METHYL-l-PROPANAL 2-METHYLPROPIONALDEHYDE NCI-C60968 VALINE ALDEHDYE... 

GTP was employed for the synthesis of block copolymers with the first block PDMAEMA and the second PDEAEMA, poly 2-(diisopropylamino)c-thyl methacrylate], PDIPAEMA or poly 2-(N-morpholino)ethyl methacrylate], PMEMA (Scheme 33) [87]. The reactions took place under an inert atmosphere in THE at room temperature with 1-methoxy-1-trimethylsiloxy-2-methyl-l-propane, MTS, as the initiator and tetra-n-butyl ammonium bibenzoate, TBABB, as the catalyst. Little or no homopolymer contamination was evidenced by SEC analysis. Copolymers in high yields with controlled molecular weights and narrow molecular weight distributions were obtained in all cases. The micellar properties of these materials were studied in aqueous solutions. 

Danishefsky and coworkers employed two hetero Diels-Alder reactions in a total synthesis of the ansa bridge of rifamycin S (Scheme 52)87 The first cyclocondensation reaction uses the trimethylsilyloxy diene (14) and a preincubated solution of 3-(benzoyloxy)-2-methyl-l-propanal (188) with an excess of TiCU in CHCh. The product is exclusively the syn-ACF pyrone (189). Through a Ferrier rearrangement and a sequence of oxidation-reduction steps followed by functional group manipulations aldehyde (190) is obtained. 

Terbumeton (triazine herbicide) 2-Acrylamido-2-methyl-l-propane sulfonic acid, MAA, AA N N -methylene-bis-acrylamide hydrophilized polyvinylidene fluoride microfiltration membrane SPE membrane surface imprinting by photo-grafting polymerization [104]... 

The modified membrane surfaces exhibit more hydrophilic and negative charged features after the treatment. Grafting with MA and AAG decreases the permeability of natural organic matter (NOM) to less than half of the untreated membrane. The modification reduces fouling by foulants such as NOM. In a similar study, best results, with respect to protein retention and protein solution flux, were obtained by grafting NVP, 2-acrylam-ido-2-methyl-l-propane sulfonic acid, and AA onto a 50 kDalton PES. ... 

Acrylamido-2-methylpropanesulfonate, 312 2-Acrylamido-2-methyl-l-propane sulfonic acid, 260 Acrylic acid, 2, 24, 254, 260, 408 Acrylonitrile-butadiene-styrene, 412 Acryloyl chloride, 312, 314... 

We developed a synthesis of monodisperse, highly charged colloidal particles of PNIPAM whose diameter depends on temperature (76). NIPAM was polymerized with the ionic comonomer 2-acrylamido-2-methyl-l-propane sulfonic acid to increase the colloid surface charge which facilitates CCA self-assembly. Figure 4 shows the temperature dependence of the colloidal sphere diameter, which increases from -100 nm at 40°C to -300 nm at 10 C. 

AMPS 2-acrylamido-2-methyl-l-propane sulphonic acid... 

PAne (PANi, SFST, 280 000 g/mol), DCAd (DCAA, Merck, 9 %) and 2-acrylamido-2-methyl-l-propane sulfonic acid (AMPSA, Aldrich, 9 %) were all used without arty further purification. Purified SWCNT (SWNTs, Hipco CNI) were used as pirrchased and contained 5 w % iron residue as determined by elemental analysis. 

Thermal sensitivity, based on temperature-dependent swelling as monitored using the EQCM, resulted from deposition in the presence of such polymers as 2-acrylamido-2-methyl-l -propane sulfonic add (AMPS) [148],... 

The o(T) of 2-acrylamido-2-methyl-l-propane-sulfonic acid (AMPSA) samples are shown in Figure 2.6 [38, 39]. These samples show a positive TCR at temperatures above 80 K. Although the o(300 K) of PANI-AMPSA samples is slightly lower with respect to PANI-CSA, its positive TCR is observed down to much lower temperatures. The wet spun PANI-AMPSA fibres have shown an impressive room temperature conductivity of nearly 2000 S cm [40]. The difference in o(300 K) and o(T) between CSA- and AMPSA-doped PANI samples is possibly due to the variations in microstructure and its contribution to disorder-induced localisation. This shows that the charge transport in doped conducting polymers is rather sensitive to slight variations in the morphological features. 

Using DBSA as a primary dopant and a copolymer of JV-isopropyl acrylamide (NiPAAm) and 2-acrylamido-2-methyl-l-propane sulfonic acid (AMPS) poly(NiPAAm-co-AMPS) as a co-dopant, electrically conducting PPy/DBSA/poly(NiPAAm-co-AMPS) composites are chemically synthesized in aqueous medium with APS as the oxidant (Figure 8.49) [94]. The PPy composites were readily dissolved in chloroform with the extra DBSA. The electrical conductivities of the PPy composite free-standing films are in the range of 10 to 5 S/cm and increase with increasing moisture concentration in air due... 

M. Lapkowski, Electrochemical synthesis of polyaniline poly(2-acryl-amido-2-methyl-l-propane-sulfonic acid) composite, Synthetic Metals 1993, 55, 1558. 

Kim SJ, Lee CK and Kim SI, Effect of ionic salts on the processing of poly(2acrylamido-2-methyl-l-propane sulfonic acid) nanofibers ,/. AppZ. Polym. 5 d.,2005,96,1388. 

Other sulfonated polymeric electrolytes were also used in combination with polyaniline [136]. Sodium poly(styrene sulfonate), poly(2-acrylamido-2-methyl-l-propane sulfonate) and poly(vinyl sulfonate) were used as electrolytes in the electrochemical polymerization of aniline. Perchloric acid was added to lower the pH. The polymerization of aniline was performed by potential sweep using a platinum foil as working electrode. According to the authors, the polyelectrolyte is incorporated into the polyaniline film in a ratio of one sulfonate group for every four aniline repeating units. 

Poly(acrylic acid-co-acrylamide-co-2-acryUtmido-2-methyl-l-propane-sulfonic acid)-Grafted Nanocellulose/Poly(vinyl alcohol) Composite [P(AA-co-AAm-co-AMPS)-g-NC/PVA] The reaction steps followed for the synthesis of P(AA-co-AAm-co-AMPS)- -NC/PVA are as follows. 

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