Tetrahedron

An Efficient Synthesis of Arylcyclobutenes via Cross-Coupling of Aryl Halides with 1-(Tri-n-butylstannyl) cyclobutene

J Feng, G Szeimies

文献索引：Feng, Jing; Szeimies, Guenter Tetrahedron, 2000 , vol. 56, # 25 p. 4249 - 4252

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被引用次数: 7

摘要

1-Tri-n-butylstannylcyclobutene, obtained from 1-bromocyclobutene by lithium/bromine exchange and transmetalation with chloro-tri-n-butylstannane, could be effectively converted with aryl halides into 1-arylcyclobutenes by the Stille cross-coupling procedure. Hetero-aryl halides like 2-bromopyridine and 2-iodothiophene were also successfully coupled, and in 1, 3, 5-tribromobenzene, 1, 2, 4, 5-tetrabromobenzene and hexabromobenzene all bromine ...