Monatshefte fur Chemie p. 303 - 316 (1983)
Update date:2022-08-29
Topics:
Kappe, Thomas
Korbuly, Gertraud
Pongratz, Erik
The title compounds 3 can be prepared either from the iodonium-ylides 1 or from the chlorocompounds 4.On treatment with hydrochloric acid the thiophanium-ylides 3C undergo ring cleavage to the chlorobutylsulfides 5, also formed from 4 and thiophane.The dimethylsulfonium-ylide 8 is derived from activated DMSO and 7b.The Ortoleva-King reaction is discussed as an alternative method for preparing pyridiniumylides. - Keywords: Activated dimethylsulfoxide; Ortoleva-King reaction; 2-Oxo<1>benzopyran-4-olates; 2-Oxoquinolin-4-olates; Thiophanium ylides
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