QQ客服 官方微博 反馈留言

	Interconversion of Metallabenzenes and Cyclic eta(2)-Allene-Coordinated Complexes
	Lin, Ran ; Zhao, Jing ; Chen, Hanyu ; Zhang, Hong ; Xia, Haiping ; Xia HP(夏海平)
	2012-07
关键词	allenes interconversion metallabenzene metallacycles aromatic substitution
英文摘要	Treatment of the osmabenzene [Os{CHC(PPh3)CHC(PPh3)CH} Cl2(PPh3)2]Cl (1) with excess 8-hydroxyquinoline produces monosubstituted osmabenzene [Os{CH C(PPh3) CHC(PPh3)CH}(C9H6NO)Cl(PPh3)]Cl (2) or disubstituted osmabenzene [Os{CHC(PPh3)CHC(PPh3)CH} (C9H6NO)2]Cl (3) under different reaction conditions. Osmabenzene 2 evolves into cyclic ?2-allene-coordinated complex [Os{CH?C(PPh3)CH=(?2-C?CH2)}(C9H6NO)(PPh3)2]Cl (4) in the presence of excess PPh3 and NaOH, presumably involving a P?C bond cleavage of the metallacycle. Reaction of 4 with excess 8-hydroxyquinoline under air affords the SNAr product [(C9H6NO)Os{CHC(PPh3)CHCHC} (C9H6NO)(PPh3)]Cl (5). Complex 4 is fairly reactive to a nucleophile in the presence of acid, which could react with water to give carbonyl complex [Os{CH?C(PPh3)CH?CH2}(C9H6NO) (CO)(PPh3)2]Cl (6). Complex 4 also reacts with PPh3 in the presence of acid and results in a transformation to [Os {CHC(PPh3)CHCHC}(C9H6NO)Cl (PPh3)2]Cl (7) and [Os{CH?C(PPh3) CH=(?2-C?CH(PPh3))}(C9H6NO) Cl(PPh3)]Cl (8). Further investigation shows that the ratio of 7 and 8 is highly dependent on the amount of the acid in the reaction.; National Natural Science Foundation of China [20801046, 20925208, J1030415]; Fundamental Research Funds for the Central Universities [CXB2011039, 201112G002]
语种	英语
出版者	WILEY-V C H VERLAG GMBH
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1002/asia.201200231]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Lin, Ran,Zhao, Jing,Chen, Hanyu,et al. Interconversion of Metallabenzenes and Cyclic eta(2)-Allene-Coordinated Complexes[J],2012.
APA	Lin, Ran,Zhao, Jing,Chen, Hanyu,Zhang, Hong,Xia, Haiping,&夏海平.(2012).Interconversion of Metallabenzenes and Cyclic eta(2)-Allene-Coordinated Complexes..
MLA	Lin, Ran,et al."Interconversion of Metallabenzenes and Cyclic eta(2)-Allene-Coordinated Complexes".(2012).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。