Heterocyclische Siebenring-Verbindungen, XXXV / Heterocyclic Seven-Membered Ring Compounds, XXXV
1990 ◽
Vol 45
(7)
◽
pp. 1059-1066
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Keyword(s):
Thermodynamic Data, Heterocyclic Seven-Membered Ring CompoundsOn heating in carbon tetrachloride or nitromethane the 5-methoxy-1-benzothiepines 1-4 isomerize to the corresponding thionaphtholes 5-8, whereas in cyclohexane from 1-4 the usual desulfuration products C arise. Kinetic and thermodynamic data have been estimated for the reactions 3 → 7 and 4 → 8. If the thermal rearrangement of 3 resp. 4 takes place in presence of cyclohexene sulphide, one gets the desulfuration products C also in carbon tetrachloride or nitromethane as solvent together with the equimolar amount of cyclohexene. This behaviour leads to the assumption of a S2-spezies as the primary elimination product of sulphur from the episulphide intermediate A.
1990 ◽
Vol 45
(11)
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pp. 1573-1576
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1997 ◽
2019 ◽
Keyword(s):
1971 ◽
Vol 19
(11)
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pp. 2215-2221
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1952 ◽
Vol 74
(3)
◽
pp. 657-660
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