Salts, alkylation

Nitrosation (Section 22 15) Nitrosation of amines occurs when sodium nitrite is added to a solution containing an amine and an acid Primary amines y e d alkyl diazonium salts Alkyl diazonium salts are very unstable and yield carbo cation derived products Aryl diazonium salts are exceedingly useful synthetic in termediates Their reactions are de scribed in Table 22 7... 

Methoxydimethylsulfonium and Trimethylsulfoxonium Salts. Alkylating agents react with DMSO at the oxygen. For example, methyl iodide gives methoxydimethylsulfonium iodide (10) as the initial product. The alkoxysulfonium salts are quite reactive and, upon continued heating, either decompose to give carbonyl compounds or rearrange to the more stable trimethylsulfoxonium salts, eg, (11) (eq. 21) (52) ... 

Pyrylium salts alkyl groups reactivity, 3, 662 aromaticity, 3, 640 arylammes from, 3, 657 benzenoid compounds from, 3, 656, 658 benzisoxazol-3-yl-synthesis, 6, 124 bicyclic... 

Pyrylium salts, 3-acetyl-2,4,6-trimethyl-crystallography, 3, 625 Pyrylium salts, 3-alkoxymethyl-synthesis, 3, 865 Pyrylium salts, alkyl-deprotonation, 2, 51 reactions, 2, 50 Pyrylium salts, 2-amino-reactions, 2, 55 Pyrylium salts, 4-amino-deprotonation, 2, 55... 

Quinolinium 2-dicyanomethylene-1,1,3,3-tetracyanopropanediide dimensions, 2, 110 Quinolinium iodide, 1-alkyl-Ladenburg rearrangement, 2, 300 Quinolinium iodide, 1-methyl-Ladenburg rearrangement, 2, 300, 335 Quinolinium iodide, [l-methyl-4-[3(5)-pyrazolyl]-blood sugar level and, 5, 291 Quinolinium perchlorate, 1-ethoxy-hydroxymethylation, 2, 300 Quinolinium perchlorate, 1-methyl-nitration, 2, 318 Quinolinium salts alkylation, 2, 293 Beyer synthesis, 2, 474 electrophilic substitution, 2, 317 free radical alkylation, 2, 45 nitration, 2, 188 reactions... 

Sulfates or sulfonates Alkali metal salts of sulfated alcohols, sulfonic acid salts alkyl-aryl sulfonates sodium laiiryl sulfate Nonaqiieoiis systems mixed aqueous and nonaqiieoiis systems oil-well drilling muds spent H3SO4 recovery deep-fat frying... 

By hydrolysis of a phthalocyaninc containing an in situ generated alkyl isothiuronium salt, alkyl thiols as side chains have been obtained.438... 

Treating petroleum oils with 3-5% calcium alkyl salicylate and 0.5-3% triethanolamine salts of phosphoric acid esters and ethoxylated dodecyl alcohol increases oxidation-thermal stability at 180-200°C in the manufacture of oil for metal parts quenching. The agent provides also short-term anticorrosion protection of the hardened articles [261]. Phosphoric acid salt alkyl esters are used in anticorrosives and aqueous dispersions in waterborne polyester coatings for metals [244]. 

Allyl propyl disulphide a-Alumina, see Aluminium oxide Aluminium as Al Metal dust Pyro powders Welding (umes Soluble salts Alkyls (NOC)... 

Anionic salts Alkyl sulfonates 1% acetic acid, sodium nitrate... 

Chiral hydrazones have also been developed for enantioselective alkylation of ketones. The hydrazones can be converted to the lithium salt, alkylated, and then hydrolyzed to give alkylated ketone in good chemical yield and with high enantioselec-tivity83 (see entry 4 in Table 1.3). 

CA 66, 39497e(1967) An aerated aqueous expl compn of improved sensitivity and regulated d and expl strength was provided by passing compressed air into a slurry contg 20—75% oxidizer (such as nitrates and perchlorates of NHa, K, Na, Ca, Ba, etc), 4—35% water, 4—60% sensitizer (such as TNT, Pentolite, PETN, smokeless propint, RDX or Tetryl ),A1 and Mg, 0.5—2.0% thickener (such as gaar gum, CM-cellulose starch), 0.6—5.0% surfactant [such as diethano lam ides of coconut lauric acids, triethanolamine salts, alkyl-poly (oxyethylene)s, arylalkylsulfonates mixed dimethylamine oxides]. Presence of... 

In the latter case the structure of the intermediate was elucidated by NMR During the catalytic action of these enzymes several intermediates (consecutive break-down products of (27) absorbing between 370 and about 420 nm are formed Structure (26) was for a long time not accepted because the C(10a) position of flavin was believed to be chemically rather unreactive until it was found that o-complexes are formed between quaternary flavinium salts and methoxide As shown later by NMR the formation of C(lOa) o-adducts is restricted to flavinium salts alkylated at N(I) In addition, careful oxidation of methanolic or acetonitrile solution of... 

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