Helvetica Chimica Acta p. 645 - 652 (1980)
Update date:2022-08-03
Topics:
Pfoertner, Karl-Heinz
The synthesis of 3-(2-thienyl)-2,2-dimethyl-2H-azirine (1) is described.UV. irradiation of 1 in benzene solution generates the nitrile isoprpylide 2 which reacts in a regiospecific manner with activated C,C and C,O double bonds to give 1-pyrrolines and 3-oxazolines, respectively.With chelidonic acid diethyl ester the cycloaddition of 2 to the C,C double bond is preferred.
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