Outline
DOI: 10.1002/ajoc.70572 ISSN: 2193-5807
Pd‐Catalyzed [4+2] Cycloaddition of Allenyl Benzoxazinones With 2‐Arylmethylene‐1,3‐indanediones to Construct Allenyl 1,3‐Indandione Spirocyclic Tetrahydroquinoline Derivatives
Shengbiao Yang, Aotian Li, Jian Sheng, Lan Bao, Miao Sun, Ran Wang, Can Ding, Lingang Wu, Chunhao YuanABSTRACT
A palladium‐catalyzed [4+2] cycloaddition of allenyl benzoxazinones with 2‐arylmethylene‐1,3‐indanediones has been disclosed in this paper, affording spirocyclic tetrahydroquinoline derivatives bearing an allene moiety in good yields with excellent diastereoselectivities. The reaction proceeds through an alkylidene‐π‐allyl‐Pd dipole from allenyl benzoxazinone in the presence of a palladium catalyst.
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