Facile Formation of Unexpected [m,6,n]-tricyclic Spiranes via Intramolecular [3+2] Cyclization of Platinum-bound Pyrylium with Alkenes

Bulletin of the Korean chemical society

Chang Ho Oh¹  Ji Ho Lee¹  Sang Yong Tak¹  Lanhua Piao¹ 

关键词: Cyclization;    Platinum;    Pyrylium ions;    Carbene;    Spirane;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

Enynals bearing an olefinic pendant were successfully cyclized via Huisgen-type [3+2] cycloaddition to the tetracyclic Pt-carbene complexes which would undergo insertion into a C-H bond of the β-position to afford the fused cyclopropane intermediates. Their tandem rearrangement afforded diverse types of spiranes depending on the tethered alkenes of the enynals.

【 授权许可】

Unknown