Tetra-co-ordinate Sulphur

55-Diorgano-sulphoximides.—(See also Chapter 1, p. 50.) This type of compound has recently been reviewed. Interest in their pharmacological activity has led to the preparation of some novel cyclic sulphoximides. Thus 2-(alkyl-sulphinyl)benzamides were cyclized with hydrazoic acid to the benzisothiazole oxides (98). Tricyclic sulphoxides were converted into the free sulphoximides (99) either by the tosyl azide-copper method with subsequent hydrolysis, or 

The stereochemical course of substitution at sulphur in the sulphon oxidation state, attached to four different ligands, was examined by Cram and Jones. 

Kobayashi, A. Mori, and H. Minato, Bull. Chem. Soc. Japan, 1974,47, 891. 

The chemistry of S,S-diorgano-sulfodi-imides , in Topics in Sulfur Chemistry , 

In accord with their basic bifunctionality, sulphodi-imides (109) undergo substitution reactions on one or both nitrogens with a large variety of electrophiles. Addition-condensation reactions with bifunctional reagents, including reactive dichlorides, isocyanates, and multiple-bond systems, have afforded a series of novel heterocycles (115)—(123). Although most of the reported 

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The molecular structure of iVA -dimethylsulphurdi-imide was studied in the gas phase. The preparation, properties, and structures of a selection of di-, tri-, and tetra-co-ordinate cyclic sulphur-nitrogen compounds have been discussed. ... 

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