Halides, inorganic, with derivatives

The aluminum halides and aluminum nitrates have similar properties with the exception of the family of aluminum fluoride compounds which are discussed elsewhere (see Fluorine compounds, inorganic). Of the remaining members in this aluminum halide family, chloride derivatives are the most commercially important aluminum bromide [7727-1S-3] aluminum iodide [7784-23-8] aluminum nitrate [13473-90-0] A1(N02)3 are of... 

Dialkylamino derivatives of elements located in the periodic table to the left or below those listed above cannot be prepared by the above method due to either the ionic character of some of the inorganic halides or the formation of stable metal halide-amine addition products. Therefore, other methods must be applied. Dialkylamino derivatives of tin7 and antimony8 are conveniently obtained by reaction of the corresponding halides with lithium dialkylamides. Others, such as the dialkylamino derivatives of aluminum,9 are made by the interaction of the hydride with dialkylamines. Dialkylamino derivatives of beryllium10 or lithium11 result from the reaction of the respective alkyl derivative with a dialkylamine. 

Volume 10 is devoted to formation and solvolysis of esters and related reactions, with discussion of the effect of neighbouring groups and biological implications, e.g. enzyme action, where appropriate. The first chapter deals mainly with esters of the inorganic acids of phosphorus and sulphur, Chapter 2 with the formation and solvolysis of esters of organic acids and the final chapter with the solvolysis of related derivatives of carboxylic acids, e.g. halides, amides, anhydrides, cyanides, carbamic acid derivatives. 

Michasl found that on treating the ester of the l,l acid with sodium ethylate a yellow color, was produced. On treating thie solution with ethyl iodide or benzoyl chloride some inorganic salt wae precipitated but no products of the reaction could bs isolated. It is possible that sodium ethylate splits the ring of this ester and the resulting sodium derivative reacts with a halide.(Of.page 9l )... 

GC has been used extensively for the separation and determination of volatile organic molecules, and most aspects of this application area are fully documented in monographs on this technique. In the inorganic trace analysis area, however, fewer species possess the required volatility, and applications tend to be limited to the separation of volatile species of low molecular weight (such as methyl derivatives of As, Se, Sn, Hg) and the separation of semi-volatile organo-metals, metal halides, metal hydrides, metal carbonyls and metal chelates. For organo-metal species, the type of detection system required varies with the nature of the analyte, and the options include electron capture detection, flame photometric detection (sometimes ICP), AAS and MS. 

The unsubstituted nitrogen atom in 1,2,4-dithiazolidines is more prone to electrophilic reactions. Both the potassium salt 11 and the initial product 12 can participate in alkylation and acylation reactions. Alkylation of salt 11 with alkyl halides is carried out in DMF or MeCN and compound 12 can react with alkyl halides in MeCN in the presence of inorganic bases (NaH, Bu OK, AcONa, NaHCOj, CS2CO3) NaHCO( proved to be the base of choice. Yields of alkylation products 26 in some cases reach 85-90%. Compound 12 was acylated by benzoyl chloride in pyridine to form the iV-benzoyl derivative 25 (Scheme 15) <2000SL1622, 20030BC3015>. 

---