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Reactions of photoexcited SO2; preparation of α-substituted alkanesulphinic acids

✍ Scribed by J.R. Nooi; P.C. van der Hoeven; W.P. Haslinghuis

Publisher
Elsevier Science
Year
1970
Tongue
French
Weight
153 KB
Volume
11
Category
Article
ISSN
0040-4039

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✦ Synopsis

Irradiation of SOe in the gas phase with W-light in the presence of gaseous alkahes leads to the formation of alkanesulphinic acids (1). When SOe is irradiated in the presence of cis-or trans-butene, cis/trahs isomerization occurs (21, whilst in the presence of biacetyl, phosphorescence from biacetyl is observed (3). Photolysis of SOs within the first allowed absorption band leads to SOs (4). These reactions are assumed to proceed via excited SOs (2-5). The initiation of the liquid-phase reaction (6,7) between alkanes, SOs and Oa (sulphoxidation, leading to alkanesulphonic acids) is also supposed to proceed via excited SOs (8,9). Here we present another * When a mixture of a solution Xf 2-propanol and SO, (0.55 and 0.37 molar respectively) in Ccl, was irradiated at +20 C, acetone was formed in a yield of 31 mole% in 6 h. However, also water, sulphur, chloroform and Cl-ions were formed, the latter two indicating that Ccl, is taking part in the reaction ( 14).

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