A Phosphorus(III)‐Mediated (4+1)‐Cycloaddition of 1,2‐Dicarbonyls and Aza‐ o ‐Quinone Methides to Access 2,3‐Dihydroindoles
A Phosphorus(III)‐Mediated (4+1)‐Cycloaddition of 1,2‐Dicarbonyls and Aza‐ o ‐Quinone Methides to Access 2,3‐Dihydroindoles
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DOI:
10.1002/hlca.201900192
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发表时间:
2019-12
影响因子:
1.8
通讯作者:
Kaitlyn E. Eckert;Antonio J. Lepore;B. Ashfeld
中科院分区:
文献类型:
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作者:
Kaitlyn E. Eckert;Antonio J. Lepore;B. Ashfeld
A (4+1)‐cycloaddition is reported between 1,2‐dicarbonyls and aza‐o‐quinone methide precursors to access 2,3‐dihydroindoles bearing a tetra‐substituted carbon center. The utilization of dioxyphospholenes as carbene surrogates provided dihydroindoles in 20–90 % yield, wherein the electronic nature of the dioxyphospholene impacts its role in the reaction.