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Sulphinyl halides, reactions

In the course of this study, the authors determined /Lvalues for dibenzyl, methyl phenyl, methyl p-nitrophenyl, di-p-tolyl, di-isopropyl and tetramethylene sulphoxides and for diethyl, dipropyl and dibutyl sulphites. The /Lscales are applied to the various reactions or the spectral measurements. The /Lscales have been divided into either family-dependent (FD) types, which means two or more compounds can share the same /Lscale, family-independent (FI) types. Consequently, a variety of /Lscales are now available for various families of the bases, including 29 aldehydes and ketones, 17 carboxylic amides and ureas, 14 carboxylic acids esters, 4 acyl halides, 5 nitriles, 10 ethers, 16 phosphine oxides, 12 sulphinyl compounds, 15 pyridines and pyrimidines, 16 sp3 hybridized amines and 10 alcohols. The enthalpies of formation of the hydrogen bond of 4-fluorophenol with both sulphoxides and phosphine oxides and related derivatives fit the empirical equation 18, where the standard deviation is y = 0.983. Several averaged scales are shown in Table 1588. [Pg.559]

The anions derived from a-sulphinyl carboxylic esters 358 can also be easily generated by NaH or Their reaction with alkyl halides gives monoalkylated products... [Pg.315]

Acylation of oc-sulphinyl carbanions. Synthesis of fS-oxosulphoxides. oi-Ketosulphoxides have found very broad application in organic synthesis (see, for example. Reference 532). For this reason, a great deal of examples of their syntheses appear in the chemical literature. The main approach to this class of functionalized sulphoxides involves the reaction of a-sulphinyl carbanions with carboxylic esters or acyl halides. [Pg.337]

References to addition reactions of sulphenyl halides with alkenes and alkynes are given in the Sulphides section. An incidental bonus from a study of the addition of PhSCl to adamantylideneadamantane is the formation of the 4e-chloro-derivative and PhSSPh, via an intermediate thiiranium salt. Sulphenyl and selenenyl chlorides have been used for the dehydration of aldoximes to nitriles. Whereas sulphinyl chlorides yield sulphinate esters with alkoxytri-methylsilanes, no reaction occurs with sulphenyl chlorides. ... [Pg.63]

Suiphinyl and Seleninyl Halides.—Chlorinolysis of A -(alkylsulphinylmethyl)-phthalimides [PhtCH2S(0)R - RS(0)Cir and the formation of ff-chloro-alkane-sulphinyl chlorides from reactive methylene compounds with SOClj and pyridine illustrate new examples of known methods of preparation. The latter compounds have been shown to yield a-chloro-sulphines on reaction with a tertiary amine (MeCHClSOCl - MeCCl=S=0 MeCCl2SOCl). ... [Pg.68]

Miscellaneous reactions of cr-sulphonyl carbanions with electrophiles include processes involving arylsulphonylmethyl methyl ether anions, cr-sulphinyl sulphone anions, perfluorobutylsulphonylmethylmagnesium halides, nucleophilic substitution in aromatic nitro-compounds by cr-halogenosulphonyl... [Pg.110]

Allenic sulphoxides ArSOCH=C==CR R are available through the reaction of sulphenyl halides with propargyl alcohols HC CCR R OH. Friedel-Crafts reactions with toluene>p-sulphinyl chloride in the presence of AICI3, SnCh, or SbCl, give aryl p-tolyl sulphoxides, and an analogous product is obtained unexpectedly, using toluene-p-sulphonyl chloride with isoquinoline as substrate in the presence of excess NaH. ... [Pg.37]


See other pages where Sulphinyl halides, reactions is mentioned: [Pg.1205]    [Pg.61]    [Pg.299]    [Pg.311]    [Pg.315]    [Pg.337]    [Pg.299]    [Pg.311]    [Pg.315]    [Pg.584]    [Pg.2]    [Pg.88]    [Pg.80]    [Pg.63]    [Pg.39]    [Pg.175]   
See also in sourсe #XX -- [ Pg.263 , Pg.264 , Pg.265 , Pg.266 , Pg.267 , Pg.283 ]




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Sulphinyl

Sulphinyl halides

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