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封面介绍Direct carbonylation of C—H bonds provides a strai-ghtforward method for the introduction of carbonyl groups into organic molecules. Under transition-metal catalysis, including palladium, ruthenium, rhodium, cobalt and copper, C(sp2)—H and C(sp3)—H bonds can react with carbon monoxide to yield carbonyl-containing compounds, such as acid anhydrides, amides and esters. The research progress of transition-metal-catalyzed re-actions of C—H bonds with carbon monoxide over the past decades has been reviewed by Wu, Cheng and Zhang on page 2155.
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封面介绍The visible-light-catalyzed tandem cyanoalkylsulfonyla-tion/cyclization of alkynes is reported by Liu, Chen, Chen, Xiong, Xie, Liu, Liang and Tang on page 2290. A transition-metal-free visible-light-mediated tandem cy-anoalkylsulfonylation/cyclization of alkynes with cy-cloketone oxime derivatives for the construction of 2-cyanoalkylsulfonyl-9H-pyrrolo[1,2-a]indoles through the insertion of SO2 is reported.
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本期栏目
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