Ruthenium-catalysed ortho alkylation of hydroxyacetophenones; the functionalisation of ring C aromatic diterpenoids
摘要:
Reaction of 2-, 3-, or 4-hydroxyacetophenone with a catalytic amount of a ruthenium complex and excess of a vinyltrialkoxysilane results in ortho alkylation in high yield, providing that a suitable protecting group is used. Bicyclic and tricyclic analogues react similarly.
Hydrogenating an organometallic carbon chain: buten-yn-diyl (CHCHCC) as a missing link
作者:Michael J. Bartlett、Benjamin J. Frogley、Anthony F. Hill、Manab Sharma、Matthew K. Smith、Jas S. Ward
DOI:10.1039/c9dt03229k
日期:——
The sequential reaction of [Ru(CCCCH)Cl(CO)2(PPh3)2] with [Ru(CO)2(PPh3)3], and N-chlorosuccinimide affords the binuclear tetracarbido complex [Ru2(μ-CCCC)Cl2(CO)4(PPh3)4]. This may be compared with the first example of a butenyndiyl bridged bimetallic complex [Ru2(μ-CHCHCC)Cl2(CO)4(PPh3)4] which is obtainedfrom the reaction of [Ru(CCCCH)Cl(CO)2(PPh3)2] with [RuHCl(CO)(PPh3)3] followed by carbonylation
Thiocarbamoyl Complexes of Ruthenium(II), Rhodium(III), and Iridium(III)
作者:Anthony F. Hill、Derek A. Tocher、Andrew J. P. White、David J. Williams、James D. E. T. Wilton-Ely
DOI:10.1021/om050514c
日期:2005.10.1
The reaction of [Ru(CO)2(PPh3)3] (1) or [Ru(η2-CS2)(CO)2(PPh3)2] with N,N-dimethylthiocarbamoyl chloride provides [Ru(η2-SCNMe2)(CO)2(PPh2)2]Cl (2·Cl), thermolysis of which yields [Ru(η2-SCNMe2)Cl(CO)(PPh2)2] (3). Treatment of 2·Cl with NaBH4 leads to carbonyl substitution and formation of [RuH(η2-SCNMe2)(CO)(PPh3)2] (4), which is readily converted to an alternative isomer of [RuCl(η2-SCNMe2)(CO)(PPh3)2]
Oxidative addition of Group 14 hydrides to osmium(O), osmium(II) and ruthenium(O) complexes. Crystal structures of Os(SiEt3)H(CO )2 (PPh3) 2 and Os(Ge[p-tolyl]3) H(CO) 2(PPh3) 2
作者:George R. Clark、Kevin R. Flower、Clifton E.F. Rickard、Warren R. Roper、David M. Salter、L.James Wright
DOI:10.1016/0022-328x(93)83374-5
日期:1993.12
Treatment of M(CO)2(PPh3)3 with HER2R′ (M Os; E Si; R R′ Me, Et, Ph; R Ph, R′ H; E Ge, Sn; R R′ p-tolyl; M Ru; E Sn; R R′= p-tolyl) affords the corresponding oxidativeaddition products M(ER2R′)H(CO)2(PPh3)2 (1–8). The crystal structures of two complexes, Os(SiEt3)H(CO)2(PPh3)2 (2) and Os(Ge[p-tolyl])3H(CO)2(PPh3)2 (6) have been determined. Reaction between HSnMe3 and any one
Difluorocarbene complexes of ruthenium derived from trifluoromethyl compounds. RuCl2(CF2)(CO)(PPh3)2, RuCl2(CFNMe2)(CO)(PPh3)2, RuCl2(CFOMe)(CO)(PPh3)2 and the structure of Ru(CF3)(HgCF3)(CO)2(PPh3)2
作者:G.R. Clark、S.V. Hoskins、W.R. Roper
DOI:10.1016/s0022-328x(00)85710-1
日期:1982.8
Difluorocarbene complexes are implicated in these reactions and a crystalline example of such a compound is RuCl2(CF2)(CO)(PPh3)2 derived from Ru(CF3)Cl(CO)(MeCN)(PPh3)2 and dry HCl gas in benzene solution. RUCl2(CF2)(CO)(PPh3)2 is readily hydrolysed to RuCl2(CO)2(PPh3)2, while Me2NH gives RuCl2(CFNMe2)(CO)(PPh3)2, MeOH gives RuCl2(CFOMe)(CO)(PPh3)2, and ethanediol gives RuCl2()(CO)(PPh3)2.
Competition between Steric and Electronic Control of Structure in Ru(CO)<sub>2</sub>L<sub>2</sub>L‘ Complexes
作者:Masamichi Ogasawara、Feliu Maseras、Nuria Gallego-Planas、Kazumori Kawamura、Kazuhiko Ito、Koichiro Toyota、William E. Streib、Sanshiro Komiya、Odile Eisenstein、Kenneth G. Caulton
DOI:10.1021/om9700775
日期:1997.4.1
simply Ru(η2-O2)(CO)2L2, but for Ru(CO)2(PEt3)3, this is accompanied by an apparent bimolecular electron transfer involving the intact complex to give Ru(CO)(CO3)(PEt3)3. X-raystructure determinations of Ru(CO)2(PEt3)3 (bis equatorial CO in trigonal bipyramid (TBP)), Ru(CO)2(PiPr2Me)3 (two isomers: bis axial CO in TBP and also square pyramidal), and Ru(η2-PhCCPh)(CO)2(PEt3)2 (cis carbonyls and trans phosphines)
在THF中存在等摩尔L的情况下,RuCl 2(CO)2 L 2的镁还原得到Ru(CO)2 L 3(L = PPh 3(1),PMePh 2(2),PEt 3(3),P iPr 2 Me(4))。在等摩尔L'(L'= P(2-呋喃基)3(5)或AsPh 3(6))存在下,RuCl 2(CO)2(PEt 3)2相应还原,得到Ru(CO)2( PET 3)2 L '但给人的Ru(CO)的混合物2(PET 3)3 - ñ大号ñ(ñ = 0-3)物种当L'= PPH 3。比较显示3或5发生反应缓慢地用L ''=(H)2,CO,或光子晶体⋮器CPh形成的Ru(CO)2 L ''(PET 3)2和自由PET 3或P(2-呋喃基)3,但迅速与4或6给出类似产品。对于L'= PEt 3,PhC PhCPh与Ru(CO)2(PEt 3)2 L'的反应比对P(2-呋喃基)3的反应更快。所有这些反应,提出了用L的