MECHANISTIC ASPECTS OF CYCLIC SULPHONIUM SALT FORMATION AND HYDROLYSIS OF 1, n-HALO (ALKYLTHIO) ALKANES

E Anklam, G Aced, Y Mao

Index: Anklam, Elke; Aced, Gaby; Mao, Yun Phosphorus and Sulfur and the Related Elements, 1988 , vol. 40, p. 99 - 104

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Abstract

Abstract Cyclization rate constants for various 1, n-halo (alkylthio) alkanes X [sbnd](CH2) n [sbnd] S [sbnd] R with n= 4 and n= 5 were determined in CH3CN, CH2CI2, C6H14, CDCI3 and H2O/CH3CN (9: 1) at T= 25° C. The rate of formation of the five-and six-membered cyclic sulphonium salts depends on the halogen atom (I> Br> Cl), the number of methylene groups between sulphur and halogen (n= 4> n= 5), on the alkyl group R and on the ...