Ionic Hydrogenation of Acylferrocenes Using Zinc Borohydride: An Efficient, Mild Method for the Preparation of Alkylferrocenes
作者:Sukanta Bhattacharyya
DOI:10.1021/om950751n
日期:1996.2.6
An effective mild procedure for the reductive deoxygenation of α-ferrocenyl aldehydes, ketones, and alcohols into the corresponding alkylferrocenes is described using a combination of zinc borohydride and zinc chloride. This is the first example of such reactivity of zinc borohydride. The present method allows the synthesis of alkylferrocenes bearing terminally functionalized pendant chains.
Selective Oxidation of the α-Methylene of the Bridge in Ferrocenophanes with Silver Oxide or Silver Perchlorate/Sodium Methoxide
作者:Masao Hisatome、Jun Watanabe、Koji Yamakawa
DOI:10.1246/bcsj.67.280
日期:1994.1
The treatment of ferrocenophanes with AgO, Ag2O or AgClO4/CH3ONa in methanol gave oxidized products at the α-methylene of the bridge. In the reaction of [m][n]ferrocenophanes (m, n = 3, 4, 5; m > n), the α-methylene of the longest bridge [m] was oxidized in preference to that of the shorter bridge [n]. A reaction mechanism via a radical and/or cation species on the α-methylene of the bridge is proposed
The interaction between [n]-ferrocenophanes (n = 4, 5) and acryloyl chloride yields [3](1,1′)[n](3,3′)- and [3](1,1′)[n](3,2′)-ferrocenophane-6-ones. The structure of [3](1,1′)[4](3,2′)-ferrocenophane-6-one has been determined by an X-ray analysis.
[ n ]-二茂铁烯(n = 4,5)与丙烯酰氯之间的相互作用产生[3](1,1')[ n ](3,3')-和[3](1,1')[ n ](3,2')-二茂铁金属-6-。[3](1,1')[4](3,2')-二茂铁金属-6-的结构已经通过X射线分析确定。
Physical properties of interannular bridged ferrocenophanium salts: structural, NMR, EPR and Mössbauer studies
作者:Teng-Yuan Dong、Hsiu-Mei Lin、Ming-Yhu Hwang、Ting-Yu Lee、Li-Hong Tseng、Shie-Ming Peng、Gene-Hsiang Lee
DOI:10.1016/0022-328x(91)86104-x
日期:1991.8
317(13), β = 85.978(12), γ = 90.872(13)°. The final discrepancy factors are RF = 0.062 and RWF = 0.063. The physical properties of ferrocenophanium salts are reported. The EPR and Mössbauer results suggest that the electronic ground state of the interannular bridged ferrocenophanium cations is 2E2g. The changes of quadrupole splittings, proton chemical shifts, and low-symmetry parameters can be explained
1,1'-(丙烷-1,3-二基)碘化二茂铁的X射线结构已确定为298 K:单斜晶,C 2 / c,a = 15.986(3),b = 15.125(3),c = 21.793(3)Å,β= 93.555(11)°; Z = 8,D计算值= 2.597 g cm- 3,R F = 0.044,R WF = 0.050。化合物1,1'-(戊烷-1,5-二基)三碘化二茂铁化铈在三斜晶空间群P1ovbr中发生晶格化:在一个单元格中具有四个分子,尺寸为a = 9.5435(14),b = 13.1195(22),c= 15.2591(23)Å,α= 106.317(13),β= 85.978(12),γ= 90.872(13)°。最终差异因子为R F = 0.062和R WF = 0.063。报道了二茂铁鎓盐的物理性质。EPR和Mössbauer的结果表明,环间桥联二茂铁阳离子阳离子的电子基态为2 E
Bhattacharyya, Sukanta, Journal of the Chemical Society, Dalton Transactions, 1996, p. 4617 - 4620