Alkenes analytical chemistry, molecular

Ozonolysis has both synthetic and analytical applications in organic chemistry. In synthesis, ozonolysis of alkenes provides a method for the preparation of aldehydes and ketones. When the objective is analytical, the products of ozonolysis are isolated and identified, thereby allowing the structure of the alkene to be deduced. In one such example, an alkene having the molecular formula CgHig was obtained from a chemical reaction and gave acetone and 2,2-dimethylpropanal as the products. 

New Applications of Tetracyanoethylene (TCNE) in Organic Chemistry, A. J. Fatiadi (1986). This review with 501 references deals with reactions of tetracyanoethylene used in organic synthesis. Information on molecular complexes, ozonization of alkenes and acetylenes, dehydrogenation and tricyanovinylation, reactions of TCNE oxide, reactions with ketones and diketones, synthesis of heterocycles and cationic polymerizations are included in this survey. Some industrial and analytical applications are also discussed. 

Another potential analytic application of gas-phase metal-ion chemistry was suggested by Preiser and coworkers but apparently as yet with no practical consequences. Pattern recognition methods were used to evaluate and demonstrate the efficacy of the rare earth metal ions Sc, Y" ", and La" " as chemical ionization reagents for molecular MS a large number of organic molecules were examined by FTICR-MS, comprising six classes alkanes, alkenes, ketones, aldehydes, ethers, and alcohols (Forbes et al., 1986a,b, 1987). 

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