Broad-spectrum radical cyclizations boosted by polarity matching. Carbonylative access to alpha-stannylmethylene lactams from azaenynes and CO |
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| Authors: | Ryu Ilhyong Miyazato Hironari Kuriyama Hiroki Matsu Kazutoshi Tojino Mami Fukuyama Takahide Minakata Satoshi Komatsu Mitsuo |
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| Institution: | Department of Chemistry, Faculty of Arts and Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan. ryu@ms.cias.osakafu-u.ac.jp |
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| Abstract: | Free-radical mediated stannylcarbonylation of azaenynes provides a general n + 1]-type annulation approach leading to alpha-stannylmethylene lactams. The cyclization is unusual in its breadth, covering 4-exo, 5-exo, 6-exo, 7-exo, and 8-exo modes. |
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