4-Dithio-3-imido-azetidin-2-ones

Details 4-Dithio-3-imido-azetidin-2-ones 4-Dithio-3-imido-azetidin-2-ones

1975-09-19

1977-05-17

Gallagher, R.J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260243C, 2602393R, 260281GP, 2603067C, C07D41700

Patent

active

040241521

ABSTRACT:
A novel 4-(2'-benzothiazolyldithio)-3-imidoazetidin-2-one of the formula ##STR1## in which X is chloro or bromo and R.sub.2 is methylene or oxygen is ring-closed to the corresponding 3-exomethylenecepham or 3-"oxo" cepham by treatment with sodium or potassium iodide at a temperature of from about 40.degree. C. to about 80.degree. C.

REFERENCES:
patent: 1809457 (1931-06-01), Teppema
patent: 2747005 (1956-05-01), Zerbe et al.
patent: 2866778 (1958-12-01), Leshin
patent: 2983726 (1961-05-01), Hendry
patent: 3705923 (1972-12-01), Sullivan

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