Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Phosphonium, triphenyl chloride

CINPC24H21, Phosphonium, (2-amino-phenyl)triphenyl chloride, 25 130 CINPPdSe2C23H25, Palladium, chIoro-(iV,M diethyIdiselenocarbamato)(triphenyI-phosphine)-, 21 10... [Pg.251]

NCIO4C4H36, Ammonium, tetrabutyl-, perchlorate, 24 135 NCIPC24H21, Phosphonium, 2-(amino-phenyl)triphenyl-chloride, 25 130... [Pg.271]

Acetonyl triphenyl phosphonium chloride and acetylmethylene triphenyl phosphorane see... [Pg.361]

Cesium fluoride-Tetraalkoxysilanes, 69 Hexamethylphosphoric triamide, 142 Methyl acrylate, 183 a-Methylbenzylamine, 185 Methyl vinyl ketone, 193 Potassium t-butoxide, 252 Potassium f-butoxide-Xonotlite, 254 Potassium fluoride-Alumina, 254 Tin(II) trifluoromethanesulfonate, 301 Titanium(IV) chloride, 304 Trityl perchlorate, 339 Vinyl(triphenyl)phosphonium bromide, 343... [Pg.361]

Cyclopentanones. Hewson et ah have used the related reagent, 1-methylthiovi-nyl(triphenyl)phosphonium chloride (1) for a synthesis of prostaglandin D, methyl ester (8). Thus reaction of the diketodithiane 2 with 1 in the presence of NaH gives 3, which is readily converted into the enone 4. Addition of the cuprate reagent 5 to 4 shows unexpected selectivity in favor of the natural (rani-arrangement of the side chains, perhaps because of the spiro dithiane unit. [Pg.555]

Reaction of 8-fluoro-5H-pyrido[l, 2,3-de] [1,4]benzoxazine-3,7(2H,6H)-dione and triphenyl(methoxymethyl)phosphonium chloride in the presence of KOf-Bu gave 7-[(methyloxy)methylidene]-3-oxo derivative, which was reacted with Me3SiCl in the presence Nal in MeCN at ambient temperature for 18 h to yield 7-carbaldehyde derivative (08WOP2008/ 116815). [Pg.62]

Synthesis of 3-methoxy-2-thienylmethyl(triphenyl)phosphonium chloride (R. A. Aitken and A. N. Garnett, unpublished data)... [Pg.70]

Triphenyl(amino)phosphonium chloride, [Ph3PNH2]+Cl , is formed in a Sfaudinger reaction of PPh3 with Me3SiNH2 in the presence of water, obviously through hydrolysis of the normal product Ph3P=NSiMe3 obtained nnder anhydrons conditions. ... [Pg.3725]

Extensive studies of chloral polymerization were carried out with tertiary phosphines and with phosphonium chlorides as initiators. Tertiary phosphines, for example triphenyl phosphine, reacted instantaneously and quantitatively with one mole of chloral to form PH3p —OCH=CCl2CP. The phosphonium chloride had the same ability to initiate chloral polymerization as triphenylphosphine. [Pg.373]

As an example for the ion-pair chromatographic analysis of phosphonium compounds, the separation of triphenyl-mono(P-jonyliden-ethylen)-phosphonium chloride is illustrated in Fig. 5-50. [Pg.284]

The phosphonium salt releases difluorocarbene by reacting with the fluoride ion. Alternatively, chlorodifluoromethyl(triphenyl)phosphonium chloride (from dichlorodifluoromethane and phosphane) or cesium fluoride can be used. ... [Pg.592]

Svnthe.sis Trans-l-(2-Methoxyvinyl)pyrene (r-MVP) was synthesized by Wittig reaction according to the previous paper with minor modification. In brief, 1-pyrenecarboxaldehyde and (methoxymethyl)triphenyl phosphonium chloride were dissolved in tetrahydrofuran (THE). To the mixture, potassium rert-butoxide was slowly added and the solution was stirred for 15 h at room temperature. The crude product was thrice purified by column chromatography on silica gel to afford t-MVP. [Pg.332]

Wittig reactions Carbomethoxymethylenetriohenylphosphorane. Cyclopropyltriphenyl-phosphonium bromide. l,5-Diazabicyclo[4.3.0]nonene-5. Diethyl cyanomethylphosphonate. p-Diphenylphosphinobenzoic acid. Diphenylsulfonium isopropylide. Diphenyl triphenyl-phosphoranylidenemethylphosphonate. Ethyl(dimethylsulfuranylidine)acetate. Ethylene oxide. Hexamethylphosphorous triamide. Methoxymethylenetriphenylphosphorane. Meth-ylenemagnesium bromide (chloride). Simmons-Smith reagent. Sodium 2-methyl-2-butoxide. [Pg.245]

P(C6H6)(C4H,)NH2]C1 Phenyl-(cyclotetramethylene)amino-phosphonium chloride, 7 67 [P(C6H5)(C5H4 )NH2]C1 Phenyl-(cyclopentamethylene) amino-phosphonium chloride, 7 67 [P(C6H6)3NH2]C1 (Triphenyl)-aminophosphonium chloride,... [Pg.327]

Triphenyl(trichloromethyl)phosphonium chloride and (dichloromethylene)tri-phenylphosphorane are important intermediates in the reaction system triphenyl-phosphine/carbon tetrachloride. Solutions of (dichloromethylene)triphenyl-phosphorane, which is a convenient Wittig reagent, were first prepared by the addition of dichlorocarbene to triphenylphosphine in chloroform. However, the ylide could not be separated without degradation caused by the reaction medium. [Pg.107]

The method of preparation described here is based on the dechlorination of triphenyl(trichloromethyl)phosphonium chloride in benzene, which makes the isolation of the (dichloromethylene)triphenylphosphorane possible without decomposition."... [Pg.107]

See other pages where Phosphonium, triphenyl chloride is mentioned: [Pg.286]    [Pg.286]    [Pg.105]    [Pg.1453]    [Pg.201]    [Pg.68]    [Pg.326]    [Pg.68]    [Pg.269]    [Pg.102]    [Pg.1044]    [Pg.106]    [Pg.119]    [Pg.48]    [Pg.192]    [Pg.21]    [Pg.21]    [Pg.334]    [Pg.108]    [Pg.1069]    [Pg.11]    [Pg.107]    [Pg.107]    [Pg.107]   
See also in sourсe #XX -- [ Pg.25 , Pg.130 ]

See also in sourсe #XX -- [ Pg.24 , Pg.107 ]



SEARCH



Phosphonium chloride

Triphenyl

Triphenyl(trichloromethyl)phosphonium Chloride

Triphenyl-mono phosphonium chloride

Triphenyls

© 2024 chempedia.info