Pd-Catalyzed Cascade Heck/C(sp3)-H Activation for Spirocyclopropyl Oxindoles.
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DOI: 10.1021/acs.orglett.4c01017
Abstract: We have demonstrated a Pd(0)-catalyzed Heck/C(sp3)-H activation cascade for the synthesis of spirocyclopropyl oxindoles in high yields from easily accessible ortho-bromoacrylamides. The formation of spirocyclopropyl oxindole is guided by an unconventional four-membered palladacycle through C(sp3)-H… read more here.
Keywords: spirocyclopropyl oxindoles; sp3 activation; heck sp3; sp3 ... See more keywords
Experimental and Computational Studies of Palladium-Catalyzed Spirocyclization via a Narasaka-Heck/C(sp3 or sp2)-H Activation Cascade Reaction.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.1c04114
Abstract: The first synthesis of highly strained spirocyclobutane-pyrrolines via a palladium-catalyzed tandem Narasaka-Heck/C(sp3 or sp2)-H activation reaction is reported here. The key step in this transformation is the activation of a δ-C-H bond via an in… read more here.
Keywords: narasaka heck; heck sp3; palladium catalyzed; reaction ... See more keywords