Treatment of N-allyl-N-(phenylethynyl)arenesulfonamides with Grignard reagents under copper catalysis resulted in carbomagnesiation across the alkynyl parts. The carbomagnesiations yielded 2-magnesio-3-aza-1,5-hexadienes, which underwent the aza-Claisen rearrangement upon heating. The rearrangement followed by elimination of the arenesulfonyl groups provided 2,2-disubstituted 4-pentenenitriles.
在
铜催化下,N-烯丙基-N-(
苯乙炔基)芳磺酰胺与
格氏试剂反应,导致
炔烃部分发生碳
镁化。碳
镁化反应生成2-
镁-3-氮杂-
1,5-己二烯,加热后经历氮杂克莱森重排。重排后通过消除芳磺酰基团,提供了2,2-二取代的
4-戊烯腈。