Sulphinates photolysis

Sulphinates 60-70 - see also Alkanesulphinates, Arenesulphinates, Thiosulphinates ally - see Allyl sulphinates chiral - see Chiral sulphinates photolysis of 1076... 

Allyl sulphenates, rearrangement of 720-736 Allylsulphenic acids 747 Allyl sulphinates, rearrangement of 670-676 Allylsulphinyipyrazolenines, photolysis of 749... 

Sulphimides, photolysis of 878, 879 Sulphimines, hydrolysis of 279 Sulphinamides 70, 71 Sulphinate nucleophiles, S-substitution of 172-189... 

When photolysis (> 290 nm) was carried out in Z-butanol, the identified products were purine, hypoxanthine and purine-6-sulphonic acid. Again, reaction occurred only in the presence of oxygen. The sulphonic acid was thought to arise from the sulphinic acid, but this intermediate could not be detected [150]. 

The SO2 photolysis in the presence of light paraffins and olefins, in the absence of O2 leads to an aerosol formation, containing sulphinic acids. 

Photolysis of thiet 1,1-dioxides (179), either at 235 nm or at 350 nm with a sensitizer, yields unsaturated ketones (181) by loss of sulphur monoxide from a vinyl sulphine intermediate (180). A small amount of cyclohexadiene... 

The cycloaddition of 2-diazoalkanes to aromatic sulphines (thione S-ox-ides), readily accessible by peroxy-acid oxidation of thienes, provides yet another efficient route to A -l,3,4-thiadiazolines (156). Thiobenzophenone S-oxide (155) and 2-diazopropane, for example, afford 2,2-dimethyl-5,5-di-phenyl-1,3,4-thiadiazoline 1-oxide (156). Photolysis to the azines (157) and (158) establishes the orientation of the cycloaddition, and excludes the alternative formulation (159)." Thiofluorenone S-oxide (160) similarly yields spiro-compounds of type (161). " ... 

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