✦ LIBER ✦

Photoreaktionen des 3-(2-Thienyl)-2,2-dimethyl-2H-azirins

✍ Scribed by Karl-Heinz Pfoertner; Reinhard Zell

Publisher: John Wiley and Sons
Year: 1980
Tongue: German
Weight: 524 KB
Volume: 63
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19800630311

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✦ Synopsis

Synthesis and Photochemistry of 3‐(2‐Thienyl)‐2,2‐dimethyl‐2__H__‐azirine

The synthesis of 3‐(2‐thienyl)‐2,2‐dimethyl‐2 H‐azirine (1) is described. UV. irradiation of 1 in benzene solution generates the nitrile isopropylide 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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