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2-Ferrocenyl

PPFA jV,A -dimethyl-l,2-(diphenylphosphino)ferrocenyle hylamine py pyridine... [Pg.562]

Fig. 2. Chromatogram showing (a) the Ic separation of A, (+) (T)-(l-ferrocenyl-ethyl)thioethanol B, (+) 1-ferrocenyl-l-methoxyethane and C, (+) 1-mthenocenylethanol, on a 25-cm P-cyclodextrin column (see Table 2), and (b) the potential use of a P-cyclodextrin column to determine optical purity... Fig. 2. Chromatogram showing (a) the Ic separation of A, (+) (T)-(l-ferrocenyl-ethyl)thioethanol B, (+) 1-ferrocenyl-l-methoxyethane and C, (+) 1-mthenocenylethanol, on a 25-cm P-cyclodextrin column (see Table 2), and (b) the potential use of a P-cyclodextrin column to determine optical purity...
The solid is separated by filtration and the filtrate is extracted with three 150-ml. portions of ether. Caution Gloves should be worn when handling this solution because of the large amount of cyanide it contains.) The solid is dissolved in ether and this solution is combined with the extracts. The combined ethereal solutions are washed with water and dried over 5 g. of sodium sulfate. Removal of the solvent by distillation leaves crude ferrocenyl-acetonitrile as a solid or as an oil that crystalli/.es on being scratched. I he nitrile is dissolved in about 200 ml. of boiling... [Pg.45]

Bell and Hall have incorporated an organometallic unit into a crown by using the ferrocenyl unit as part of the ring or as a third strand. The unit is incorporated either as the 1,1 -diformylferrocene or the corresponding acid. In the former case, the bis-imine is prepared and reduced to give the saturated crown (see structure 24). In the latter case, the acid is converted into its corresponding chloride and thence into the diamide by reaction with a diamine. Diborane reduction affords the saturated amino-crown. Structure 24 could be prepared by either of these methods but the dialdehyde approach was reported to be poor compared to the amide approach which afforded the product in ca. 60% yield . [Pg.53]

Thionyl imide, HNSO, is a thermally unstable gas, which polymerizes readily. It can be prepared by the reaction of thionyl chloride with ammonia in the gas phase. Organic derivatives RNSO have higher thermal stability, especially when R = Ar. The typical synthesis involves the reaction of a primary amine or, preferably, a silylated amine with thionyl chloride. A recent example is the preparation of FcNSO (Fc = ferrocenyl) shown in Eq. 9.8. In common with other thionylimines, FcNSO readily undergoes SO2 elimination in the presence of a base, e.g., KO Bu, to give the corresponding sulfur diimide FcNSNFc. [Pg.168]

In solutions of 3-mercapto-l, 2,4-triazoles the tautomeric equilibrium is shifted to the thione forms 181b (Scheme 65) [76AHC(S1), pp. 404, 415 96UK326]. Such an equihbrium was observed for 3-mercapto-5-ferrocenyl-4-phenyl-1,2,4-triazole 182 (94MI1121 96UK326). The thione tautomers 183 of 5-mercapto-l,2,4-triazoles are predominant [76AHC(S1), pp. 405, 414 97SA(A)699]. [Pg.234]

Deprotonation of l-methyl-3-ferrocenylimidazolium tetrafluoroborate or iodide (98JOM(552)45) by lithium di-Mo-propylamide and subsequent reaction with W(C0)5-THF gives the carbene complex 107 and bis-carbene 108, even when excess W(CO)j THF is applied (99JOM(572)177). Numerous ferrocenyl benzimidazoles are known (97RCR613, 99JOM(580)26). [Pg.143]

Chiral ferrocenes have received niucli attenlion as ligands in metal-calalyzed reactions [39], bul tiieir use in copper cliemislry has been very limited [40, 41]. Hie ferrocene moiety offers die possibility of utilizing botli central and planar cliirality in die ligand. By analogy witli tlie copper arenetiiiolales described above, ferrocenyl copper complex 33 iSclieme 8.20) is extremely inleresling. [Pg.277]

Since electron-donating substituents at the phosphorus atom favor addition reactions over olefination reactions, addition of 9 to aldehydes leads to the exclusive formation of the silyl-pro-tected allylic alcohols 10. No reaction products arising from Wittig alkenylation could be detected. The ylides (R,S)-9 and (S.S)-9 and their enantiomers were prepared from the corresponding optically pure l-[2-(diphenylphosphino)ferrocenyl]-A,A -dimethylethanamine diastereomers 7 via the phosphonium salts 8. [Pg.144]

An iinportanl advance in this synthesis of allylsilanes involved the use of optically active palladium ferrocenyl complexes as catalysts to provide optically active allylsilanes with good enantiomeric excesses being obtained for (/. (-allylsilanes and less good enantiomeric excesses for (Z)-allylsilanes26,27. [Pg.343]

The gold complex, generated in situ from bis(4-isocyanocyclohexyl)gold(I) tetrafluoroborate and (A)-A-methyl-,V-[2-(dialkylamino)ethyl]-l-[(5)-r,2-bis(diphenylphosphino)ferrocenyl]eth-ylamine, is an effective catalyst for the aldol reaction of various aldehydes with methyl iso-cyanoacetate to give the trans- and cw-4,5-dihydro-l,3-oxazoles. Depending on the aldehyde, the transjeis product ratio ranges from 84 16 to 100 0, and the ee of the main diastereomer is between 72 and 97%26. [Pg.583]

For diastereoselective addition of organometallic agents to imines attached to arene tricar-bonylchromium or ferrocenyl moieties, see refs 26 28 and Section 1.4.1.1.2.2. [Pg.688]

A decisive improvement in the stereoselective performance of the Ugi reaction was achieved by the use of 1-ferrocenylalkylamines, in particular, l-ferrocenyl-2-methylpropylamine. as the inducing chiral auxiliary 18, S7. The iminc formed from the (/ )-enantiomer and isobutyralde-hyde reacts at — 78 °C with tm-butyl isocyanidc and benzoic acid to give the (S )-valine derivative with a diastereoselectivity of about 100 1. [Pg.796]

S)-2- Renzoyl[(/ )-1-ferrocenyl-2-mcthylpropyl amino valine rm-Butylamide68 ... [Pg.796]

The N+ relationship, as discussed above, is a systematization of experimental facts. The equation of Scheme 7-4 has been applied to nearly 800 rate constants of over 30 electrophiles with about 80 anionic, neutral, and even cationic nucleophiles covering a range of measured rate constants between 10-8 and 109s 1 (Ritchie, 1978). Only about a dozen rate constants deviated from the predicted values by more than a factor of 10, and about fifty by factors in the range 5-10. It is therefore, very likely that this correlation is not purely accidental. Other workers have shown it to be valid for other systems, e.g., for ferrocenyl-stabilized cations (Bunton et al., 1980), for coordinated cyclic 7r-hydrocarbons (Alovosus and Sweigart, 1985), and for selectivities of diarylcarbenes towards alkenes (Mayr, 1990 Mayr et al., 1990). On the other hand, McClelland et al. (1986) found that the N+ relationship is not applicable to additions of less stable triphenylmethyl cations. [Pg.160]

To a mixture of vinyl bromide (40 mmol) and the catalyst dichloro-[(R)-Af,N-dimethyl-l-[(.S)-2-(diphenylphosphino)ferrocenyl]ethylamine]-palladium(n) (0.2 mmol) was added an ethereal solution of [a-(trimethyl-silyl)benzyl]magnesium bromide (0.6-1 m, 80 mmol) at —78 °C. The mixture was stirred at 30 °C for 4 days, and then cooled to 0 °C and hydrolysed with dilute aqueous HC1 (3 m). The organic layer was separated, and the aqueous layer was re-extracted with ether. The combined organic extracts were washed with saturated sodium hydrogen carbonate solution and water, and dried. Concentration and distillation gave the chiral allylsilane (79%, 66% ee), b.p. 55°C/0.4mmHg. [Pg.110]


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1,2-disubstituted ferrocenyl aminoalcohol

2 ’- ferrocenyl]ethylamine

2- ferrocenyl groups

2-ferrocenyl oxazoline

A-ferrocenyl carbocation

A-ferrocenyl carbonium ion

Alcohols ferrocenyl

Aldehyde ferrocenyl

Amido ferrocenyl dendrimers

Amino alkyl ferrocenyl phosphine

Aryl-ferrocenyl ligands

Asymmetric ferrocenyl ligands

Asymmetric hydrogenation ferrocenyl phosphines

Bridged ferrocenyl monomer

Butyl ferrocenyl

Chiral 1,2-Disubstituted Ferrocenyl Aminoalcohols

Chiral ferrocenyl aminoalcohols

Chiral ferrocenyl pyrazole

Chromium complexes ferrocenyl

Cyclobutadienes ferrocenyl groups

Cyclopalladated ferrocenyl

Dendrimer ferrocenyl ligands

Diphosphine oxazoline ferrocenyl

Diphosphine oxazoline ferrocenyl ligand

Diphosphine oxazoline ferrocenyl ligand diphosphines

Ferrocene, ferrocenyl

Ferrocenes/ferrocenyls

Ferrocenes/ferrocenyls ferrocene methanol

Ferrocenes/ferrocenyls ferrocene-ferrocenium couple

Ferrocenyl 2-methoxyphenyl

Ferrocenyl Grignard compounds

Ferrocenyl Heterocyclic Compounds

Ferrocenyl acetate

Ferrocenyl alanine

Ferrocenyl alcohols, functionalized

Ferrocenyl alkanol

Ferrocenyl amide

Ferrocenyl amine

Ferrocenyl azide

Ferrocenyl bisphosphine ligand

Ferrocenyl boryl complexes

Ferrocenyl bromide

Ferrocenyl carbaldehyde

Ferrocenyl carbene complexes

Ferrocenyl carbocations

Ferrocenyl carbodiimides

Ferrocenyl carbonium ion

Ferrocenyl carbyne complexes

Ferrocenyl catalysts

Ferrocenyl catechols

Ferrocenyl cephalosporin

Ferrocenyl chalcones

Ferrocenyl chloride

Ferrocenyl complex, pyridine

Ferrocenyl complexes

Ferrocenyl complexes, bimetallic

Ferrocenyl compounds

Ferrocenyl copper

Ferrocenyl dendrimer

Ferrocenyl dendrimers

Ferrocenyl derivatives

Ferrocenyl derivatives protonation

Ferrocenyl dialkylphosphines

Ferrocenyl diamines ligands

Ferrocenyl diazenes

Ferrocenyl dicarboxylic acid

Ferrocenyl dioxolane

Ferrocenyl diphosphine ligand

Ferrocenyl diphosphines

Ferrocenyl diselenide

Ferrocenyl electron donor substituent

Ferrocenyl esters

Ferrocenyl ethers

Ferrocenyl fluoride

Ferrocenyl gold

Ferrocenyl group, stabilizing effect

Ferrocenyl iodide

Ferrocenyl isocyanate

Ferrocenyl isocyanide

Ferrocenyl itaconates

Ferrocenyl ketones

Ferrocenyl ligands alkylations

Ferrocenyl ligands catalysis

Ferrocenyl ligands precursors

Ferrocenyl lithium

Ferrocenyl methacrylate, polymer

Ferrocenyl methyl

Ferrocenyl naphthalene diimide

Ferrocenyl nitrene

Ferrocenyl oligonucleotide

Ferrocenyl organosilicon dendrimers

Ferrocenyl oxadiazoles

Ferrocenyl oxazoline carbinols

Ferrocenyl oxazoline chiral catalyst

Ferrocenyl penicillin

Ferrocenyl phosphine

Ferrocenyl phosphine ligands

Ferrocenyl phosphine-palladium catalyst

Ferrocenyl polyethers

Ferrocenyl preparation

Ferrocenyl redox products

Ferrocenyl selenides

Ferrocenyl selenoxides

Ferrocenyl side chain

Ferrocenyl silver

Ferrocenyl structure

Ferrocenyl substituent

Ferrocenyl substituents

Ferrocenyl sulfonic acid

Ferrocenyl sulfoxides

Ferrocenyl thioethers

Ferrocenyl thiol

Ferrocenyl thiolate

Ferrocenyl thionylimide

Ferrocenyl unit

Ferrocenyl zinc complex

Ferrocenyl-aminophosphine

Ferrocenyl-based diphosphines

Ferrocenyl-carboranylenesiloxyl-diacetylene

Ferrocenyl-carboranylenesiloxyl-diacetylene polymers

Ferrocenyl-chloroquine

Ferrocenyl-containing Complexes

Ferrocenyl-containing compounds

Ferrocenyl-functionalized dendrimers

Ferrocenyl-functionalized dendrimers peripheral

Ferrocenyl-oxazolinylphosphine

Ferrocenyl-phosphine-rhodium complexe

Ferrocenyl-substituted alkynes

Ferrocenyl-substituted pyridine

Ferrocenyl[ phenyl

Ferrocenylation

Functionalization ferrocenyl intermediates

Gold -ferrocenyl complex

Gold ferrocenyl]ethylamine

Homoleptic ferrocenyl derivatives of the

Homoleptic ferrocenyl derivatives of the elements

Hyperbranched ferrocenyl

Imidazolium salts ferrocenyl

Iridium ferrocenyl diphosphine

Large ferrocenyl dendrimer

Ligands 77,/ -ferrocenyl

Micelle ferrocenyl

Oligonucleotides ferrocenyl

Other Ferrocenyl Polymers Prepared from Strained Ferrocenophanes

Oxazolines ferrocenyl

Rhodium complexes ferrocenyl

Rhodium-ferrocenyl-diphosphine

Self-assembled ferrocenyl

Stopper ferrocenyl

Sulfur-Containing Ferrocenyl Ligands

Synthesis ferrocenyl sulfoxides

The Electronic Influence of Ferrocenyl and Related Groups as Substituents

Transition metal complexes ferrocenyl

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