Bulletin of the Chemical Society of Japan p. 2582 - 2585 (1980)
Update date:2022-08-04
Topics:
Saito, Takao
Oikawa, Isao
Motoki, Shinichi
9-Fluorenethione S-p-toluenesulfonimide reacted with diphenylketene to give two regioisomeric 1,3-dipolar cycloadducts.The thione S-imide and symmetrical dialkylcarbodiimides produced 3-tosylimino-1,2,4-thiadiazolidines.In the reaction with ketenimines, there occurred siteselective cycloaddition reactions on C=N vs.C=C bonds in the imines and further rearrangement of the 1,2,4-thiadiazolidine adducts.
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(1981)
