Olefin miscellaneous compounds

Related Methods Ketones from Olefins (Section 179) SECTION 60 Aldehydes Miscellaneous Compounds... 

Miscellaneous. 1,1,1-Trichloroethane reacts with olefins, CH2=CRR, in the presence of P(0)[(NCH2)]3 and FeCl2 at 130°C, to give compounds of the type CH2CCl2CH2CRR Cl (61). Fluorination of 1,1,1-trichloroethane with anhydrous hydrogen fluoride at 144°C gives both... 

Miscellaneous. Aside from the oxidation chemistry described, only a few catalytic applications are reported, including hydrogenation of olefins (114,115), a, [3-unsaturated carbonyl compounds (116), and carbon monoxide (117) and the water gas shift reaction (118). This is so owing to the kinetic inertness of osmium complexes. A 1% by weight osmium tetroxide solution is used as a biological stain, particulady for preparation of samples for electron microscopy. In the presence of pyridine or other heterocyclic amines it is used as a selective reagent for single-stranded or open-form B-DNA (119) (see Nucleic acids). Osmium tetroxide has also been used as an indicator for unsaturated fats in animal tissue. Osmium tetroxide has seen limited if controversial use in the treatment of arthritis (120,121). 

Miscellaneous Reactions of Organozinc Compounds which Give Cyclopropane Derivatives from Olefins... 

The methyl radical is not very discriminating, and shows none of the electrophilic character of most of the other radicals discussed earlier in this chapter. To what extent steric effects enter into the determination of the rate is hard to decide, but they probably are not pronounced, since the relative reactivity series is not greatly different from that of hydrogen atom additions to the same series of olefins. The relative rates are given in Table 50. It should be noted that these are derived from the absolute rates, and are not the results of competition reactions. Accordingly, there may be some substantial errors in the individual values. A very large number of miscellaneous olefinic compounds have been studied and the rate parameters for the addition are given in Table 51. In many of these cases, the methyl radicals were produced by photochemical decarbonyla-tion of acetaldehyde. After the methyl radical adds to the olefin, the new... 

The four major methods of preparation of poly(alkylene sulfides) involves the polymerization of episulfides (thiiranes), addition of dithiols to olefins, reactions of dithiols with carbonyl compounds, and reaction of dithiols with dihalides and these will be discussed in this section. Other methods will be mentioned in Section 5 (Miscellaneous Preparations). 

This volume continues in the same format as the first edition with updates on the syntheses of various types of polymers, including olefin-sulfur dioxide copolymers, polythioesters, sulfide polymers, polyisocyanates, polyoxyalkyihydroxy compounds, polyvinyl carbazole, polyvinyl acetate, polyallyl esters, polyvinyl fluoride, and miscellaneous polymer preparations. The book should be useful to academic and industrial chemists who desire typical synthetic procedures for preparing the polymers described herein. In addition to reviewing the latest journals, we survey the patent literature and give numerous additional references. 

Miscellaneous Dlefinic Microbial Metabolites. - The format of this section follows that used in Volumes 1 and 2, with compounds having an acyclic "olefinic" portion reviewed before those with cyclopentene- and cyclohexene-based... 

Miscellanous Reactions. A reaction of acrylonitriles with ni-trene generated by the reaction of chloramine T with AgNOs in aprotic solvents affords 2-substituted aziridines in up to 44% yield. A more efficient method relies on catalysis with a unique disilver(I) compound, generated in situ from AgNOs with triden-tate 4,4, 4"-tri-ferf-butyl-2,2 6, 2"-terpyridine (t-Bustpy) with A-(p-toluenesulfonyl)iminophenyliodinane (PhI=NTs) as a ni-trenoid source to aziridinate simple olefins. ... 

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