期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 126, 期 6, 页码 1804-1811出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja0385235
关键词
-
资金
- NIGMS NIH HHS [GM 28938] Funding Source: Medline
A series of new bis(phosphinite) p-XPCPIrHCl pincer complexes {[PCP = eta(3)-5-X-C6H2[OP(tBU)(2)](2)-1,3], X = MeO (4a), Me (4b), H (4c), F (4d), C6F5 (4e), and Ar-F [=3,5-bis (trifluoromethyl)phenyl] (4f)} have been synthesized. Treatment of compounds 4a-f with NatOBu in cyclooctane (COA)/tert-butylethylene (TBE) mixtures generates species with unprecedented catalytic activity for the catalyzed transfer dehydrogenation of COA with TBE as acceptor to form cyclooctene (COE) and tert-butylethane (TBA). With substrate: precatalyst ratios of 3030COA:3030TBE:1p-XPCPIrHCl (4):1.1NaOtBu, turnover numbers (TONS) between 1400 and 2200 (up to 72% conversion in TBE) and initial turnover frequencies (TOFs) between 1.6 and 2.4 s(-1) have been observed at 200degreesC.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据