Organic Letters 2009-03-05

Novel approach to 3,4-dihydro-2(1H)-quinolinone derivatives via cyclopropane ring expansion.

Takayuki Tsuritani, Yuhei Yamamoto, Masashi Kawasaki, Toshiaki Mase

Index: Org. Lett. 11(5) , 1043-5, (2009)

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Abstract

N-(1'-Alkoxy)cyclopropyl-2-haloanilines are transformed to 3,4-dihydro-2((1)H)-quinolinones via palladium-catalyzed cyclopropane ring expansion. The reaction tolerates a variety of functional groups such as ester, nitrile, ether, and ketone groups.