FeCl2(dppbz)2 、 di(p-tolyl)zinc 以
not given 为溶剂,
以65%的产率得到[Fe(dpbz)2(C6H4Me-4)]
参考文献:
名称:
Iron(I) in Negishi Cross-Coupling Reactions
摘要:
Herein we demonstrate both the importance of Fe(I) in Negishi cross-coupling reactions with arylzinc reagents and the isolation of catalytically competent Fe(I) intermediates. These complexes, [FeX-(dpbz)(2)] [X = 4-tolyl (7), Cl (8a), Br (8b); dpbz = 1,2-bis(diphenylphosphino)benzene], were characterized by crystallography and tested for activity in representative reactions. The complexes are low-spin with no significant spin density on the ligands. While complex 8b shows performance consistent with an on-cycle intermediate, it seems that 7 is an off-cycle species.
Iron-catalysed 1,2-acyl migration of tertiary α-azido ketones and 2-azido-1,3-dicarbonyl compounds
作者:Tonghao Yang、Yajun Lin、Chaoqun Yang、Wei Yu
DOI:10.1039/c9gc02085c
日期:——
Iron-catalysed 1,2-acyl migration of tertiary α-azido ketones and 2-azido-1,3-dicarbonyl compounds provides a simple and atom-economical approach toward enamides and isoquinolones. This paper reports two catalyst systems for these transformations which employ iron(II) complexes [Fe(dpbz)]Br2 (dpbz = 1,2-bis(diphenylphosphino)benzene) and FeBr2/Et3N, respectively. [Fe(dpbz)]Br2 was found to be highly
铁催化的α-叠氮基酮和2-叠氮基-1,3-二羰基化合物的1,2-酰基迁移为酰胺和异喹啉酮提供了一种简单且原子经济的方法。本文报道两种催化剂体系用于这些转化其采用铁(II)配合物的[Fe(dpbz)]溴2(dpbz = 1,2-双(二苯基膦基)苯)和FeBr 2 / ET 3 N,分别。发现[Fe(dpbz)] Br 2在将2-叠氮基-2,3-二氢-1 H-茚满-1-酮转化为异喹诺酮方面非常有效。另一方面,由于Et 3的有益作用,FeBr 2 / Et 3 N的试剂组合具有更宽的催化范围N.后一种催化剂体系可使2-叠氮基-2-甲基-1,3-二羰基化合物在温和条件下以良好的收率转化为相应的酰胺。
Mössbauer and preparative studies of some iron(<scp>II</scp>) complexes of diphosphines
Analytical and Mössbauer spectral data show that Ph2PCH2CH2PPh2(dppe) forms adducts [FeCl2(dppe)] and [FeI2(dppe)], and that [FeCl2(dppe)2] does not exist. The phosphine 1,2-C6H4(PPh2)2(opdp) forms adducts FeX2(opdp)2, which exists in one form (high-spin, trans octahedral) for X = Cl, and in two isomeric forms for X = Br or I. One isomer for X = I is high-spin, trans octahedral, and the other is ionic
Harbron, Stephen K.; Higgins, Simon J.; Levason, William, Inorganic Chemistry, 1986, vol. 25, # 11, p. 1789 - 1794
作者:Harbron, Stephen K.、Higgins, Simon J.、Levason, William、Feiters, Martinus C.、Steel, Andrew T.
DOI:——
日期:——
Barclay, J. Elaine; Hills, Adrian; Hughes, David L., Journal of the Chemical Society, Dalton Transactions, 1988, p. 2871 - 2878
作者:Barclay, J. Elaine、Hills, Adrian、Hughes, David L.、Leigh, G. Jeffery
DOI:——
日期:——
Iron(I) in Negishi Cross-Coupling Reactions
作者:Christopher J. Adams、Robin B. Bedford、Emma Carter、Nicholas J. Gower、Mairi F. Haddow、Jeremy N. Harvey、Michael Huwe、M. Ángeles Cartes、Stephen M. Mansell、Carla Mendoza、Damien M. Murphy、Emily C. Neeve、Joshua Nunn
DOI:10.1021/ja303250t
日期:2012.6.27
Herein we demonstrate both the importance of Fe(I) in Negishi cross-coupling reactions with arylzinc reagents and the isolation of catalytically competent Fe(I) intermediates. These complexes, [FeX-(dpbz)(2)] [X = 4-tolyl (7), Cl (8a), Br (8b); dpbz = 1,2-bis(diphenylphosphino)benzene], were characterized by crystallography and tested for activity in representative reactions. The complexes are low-spin with no significant spin density on the ligands. While complex 8b shows performance consistent with an on-cycle intermediate, it seems that 7 is an off-cycle species.