Buchman; Richardson
Journal of the American Chemical Society, 1945 , vol. 67, p. 395,399
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Borrows et al.
Journal of the Chemical Society, 1946 , p. 1083,1087
in petroleum ether soln. of SO2Cl2 (in dry petroleum ether) is slowly dropped into liquid ammonia; hydrolysis of the intermediately formed ammoniumsalt;;