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Phosphorus reactions with

The replacement of the —OH group by a chlorine atom (reaction 9.4) is a very general reaction of phosphorus pentachloride. For example, if concentrated sulphuric acid is written as (H0)2S02 then its reaction with phosphorus pentachloride may be written ... [Pg.251]

Aryl sulphonic acids, either free or in the form of tlieir sodium or potassium salts, are converted into the acid chlorides by reaction with phosphorus peutu-chloride or phosphorus oxychloride, for example ... [Pg.820]

Reaction with phosphorus trihalides (Section 4 13) Phosphorus trichloride and phosphorus tribromide convert alcohols to alkyl halides... [Pg.636]

Reaction with Phosphorus Nucleophiles. The ethyleneknine ring can be opened using phosphines (91) or alkaU metal phosphides (92) ... [Pg.4]

Kost et al. have studied related reactions of 2-acyl-1-phenylpyrazolidines (422) and l-phenyl-2-thiocarbamoylpyrazolidines (423). The former are converted on reaction with phosphorus oxychloride into tetrahydropyrimido[l,2-a]indoles (424) (72CHE57) and the latter into tetrahydropyrimido[2,l-f ]benzothiazoles (425) under the influence of acidic agents (80CHE169). [Pg.257]

Early attempts to produce cephalosporin analogs by varying the 7-acylamino substituent were frustrated because, in contrast to previous experience with penicillins, a good method for producing the necessary 7-amino compound (33a) could not be found. This problem was finally solved when it was discovered that diazotization of the a-aminoadipyl residue produces an iminolactone (33b) which can be hydrolyzed to the free amine in good yield. Subsequently an improved procedure was developed which involves silylation of the carboxyl groups followed by reaction with phosphorus pentachloride to yield iminochloride (33c)... [Pg.292]

Pyran-2-one, 5,6-dibromo-5,6-dihydro-reactions, 3, 735 Pyran-2-one, 5,6-dihydro-allylic bromination, 3, 799 dehydrogenation, 3, 724, 799 H NMR,3, 581 synthesis, 3, 841, 843 Pyran-2-one, 4,6-dimethyl-irradiation, 3, 677 photochemistry, 3, 678 Pyran-2-one, 5,6-dimethyl-chloromethylation, 3, 680 conformation, 3, 631 Pyran-2-one, 5-f ormyl-IR Spectra, 3, 595 Pyran-2-one, 6-formyl-IR spectra, 3, 595 Pyran-2-one, 5-halo-synthesis, 3, 799 Pyran-2-one, 3-hydroxy-IR spectra, 3, 595 Pyran-2-one, 4-hydroxy-methylation, 2, 57 3, 676 pyran-4-one synthesis from, 3, 816 reactions with phosphorus oxychloride, 2, 57 synthesis, 3, 792, 794, 795, 798 tautomerism, 2, 56 3, 642 Pyran-2-one, 4-hydroxy-6-methyl-methylation, 3, 692 reactions... [Pg.765]

An alternate scheme for preparing these compounds starts with a prefabricated pyrimidone ring. Aldol condensation of that compound (95), which contains an eneamide function, with pyridine-3-aldehyde (80), gives the product 96. Catalytic hydrogenation gives the product of 1,4 reduction. The resulting pyrimidinedione, of course exists in the usual tautomeric keto (97a) and enol (97b) forms. Reaction with phosphorus oxyxchloride leads to the chloro derivative 98. Displacement with methoxide gives 99. Reaction of this last intermediate with the furylalkylamine derivative 92 leads to the H-2 blocker lupitidine (100) [22]. [Pg.115]

A piridazine ring forms the nucleus for a rather unusual nontricyclic antidepre.ssant. Condensation of the keto ester 136 with hydrazine leads to the cyclic hydrazide 137. Oxidation, for example with bromine, gives the corresponding pyridazone 138. The oxygen is then replaced by chlorine by reaction with phosphorus oxychloride. Displacement of the halogen in 139 with N-ethylami-nomorpholine affords minaprine 140 [30]. [Pg.120]

Dimethylamine, reaction with phosphorus trichloride, 46, 42 f-Dimethylami nobenzaldehyde, conversion to 0,/9-dichloro- -dimethyl-aminostyrene, 46, 34 tn-Dimethylaminobenzoic acid, 47, 71 /5-Dimethylaminobenzoic acid, 47, 71 6.(Dimethylamino)fulvene, 47, 52 -Dimethylaminophenylacetic acid, 47, 71... [Pg.127]

Dimethylformamide, reaction with dimethyl sulfate, 47, 52 reaction with phosphorus oxychloride and cyclohexanone, 16,18 Dimethylformamide-dimethyl sulfate complex, preparation of, 47,... [Pg.128]

The products from the reactions with phosphorus pentachioride vary even with the nature of the aryl group. Thus, the p-chlorophenyl compound gave a product analogous to (6), but it was accompanied by the dimeric phosphazene, [p-ClCeHiNPClsJa. [Pg.191]

Subsequent reactions with phosphorus pentachloride and with its monophenyl derivative lead to the dimer (Cl3PNMe)2 and A-sulphonylphos-phazenes ... [Pg.201]

Glycerol gave rise to a particularly violent reaction with phosphorus triiodide. [Pg.250]

Carius (8) replaced the oxygen in phosphoryl chloride by sulfur. This may be somewhat analogous to the replacement of oxygen in a carbonyl group by sulfur using phosphorus pentasulfide. Prinz (8) used thionyl chloride in his reaction with phosphorus sulfide and De Fazi (2) used carbon tetrachloride in a very interesting preparation of this important intermediate. [Pg.145]


See other pages where Phosphorus reactions with is mentioned: [Pg.142]    [Pg.116]    [Pg.264]    [Pg.564]    [Pg.678]    [Pg.782]    [Pg.785]    [Pg.389]    [Pg.311]    [Pg.263]    [Pg.158]    [Pg.138]    [Pg.48]    [Pg.170]    [Pg.300]   
See also in sourсe #XX -- [ Pg.60 ]




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3.5- Diacetyl-l-methylpyrazole, reaction with phosphorus pentachloride

4- Acetyl-1,3,5-trimethylpyrazole, reaction with phosphorus pentachloride

Aldehydes reaction with phosphorus ylids

Aluminum-phosphorus bonds reactions with

Antimony—phosphorus bonds reactions with

Arsenic—phosphorus bonds reactions with

Aryl halides, reaction with phosphorus

Benzimidazole 3- oxides, reaction with phosphorus oxychloride

Benzoyl isocyanate, reaction with phosphorus

Boron—phosphorus bonds reaction with

Bromine, reaction with y-butyrolactone in presence of red phosphorus

Carbon—phosphorus bonds reactions with

Chlorine, reaction with hydrogen phosphorus trichloride

Copper salts, Reactions with phosphorus

Dimethylamine, reaction with phosphorus trichloride

Germanium—phosphorus bonds reactions with

Hydroxamates, O-acyl thiocarboxyl radicals from reaction with tris phosphorus

Insertion reactions with phosphorus compounds

Isocyanates, reaction with phosphorus pentachloride

Lead-phosphorus bonds reactions with

Metallic salts, Reactions with phosphorus

Methylpyrazolylketones, reaction with phosphorus pentachloride

Oxetanes, reactions with phosphorus

Oxychloride, phosphorus reaction with amines

Pentoxide, phosphorus reaction with amides

Phenols, reaction with phosphorus

Phosphorus Bromide reaction with ketones

Phosphorus acid derivatives reaction with, phosgene

Phosphorus acid derivatives, substitution reactions with

Phosphorus chloride reaction with

Phosphorus chloride reaction with carboxylic acids

Phosphorus compounds reactions with amides

Phosphorus compounds, reactions with hexafluoroacetone

Phosphorus doping reactions with silicon

Phosphorus esters reactions with

Phosphorus fluorides reactions with

Phosphorus halides reaction with, phosgene

Phosphorus halides reactions with carbonyls

Phosphorus halides, reaction with alcohols

Phosphorus halides, reaction with indole

Phosphorus hydrides reactions with

Phosphorus nucleophiles reaction with aromatic

Phosphorus nucleophiles, reaction with

Phosphorus nucleophiles, reactions with acetylenic esters

Phosphorus oxide reaction with

Phosphorus oxides reaction with, phosgene

Phosphorus oxychloride , reaction with pyridone

Phosphorus oxychloride reaction with amides

Phosphorus oxychloride, .reaction with

Phosphorus oxychloride, reaction with 2-pyrazolin-4-ones

Phosphorus oxychloride, reaction with dimethylformamide and cyclohexanone

Phosphorus pentabromide reaction with amides

Phosphorus pentachloride reaction with alcohols

Phosphorus pentachloride reaction with carboxylic acids

Phosphorus pentachloride reaction with ketones

Phosphorus pentachloride, for conversion of D,L-10-camphorsulfonic reaction with styrene

Phosphorus pentachloride, reaction with

Phosphorus pentachloride, reaction with oximes

Phosphorus pentasulfide, reaction with

Phosphorus pentasulfide, reaction with chloride

Phosphorus pentasulphide, reaction with

Phosphorus reaction with carbene complexes

Phosphorus reaction with hydrogen

Phosphorus reaction with indium

Phosphorus reaction with mercury

Phosphorus reaction with metal azides

Phosphorus reaction with metal oxides

Phosphorus reaction with phosphide anions

Phosphorus reaction with silicides

Phosphorus reaction with silicon-nitrogen bonds

Phosphorus reaction with silyls

Phosphorus reaction with water

Phosphorus reaction with, phosgene

Phosphorus reactions

Phosphorus tribromide reaction with alcohol

Phosphorus tribromide, reaction with

Phosphorus tribromide, reaction with 1,5-hexadien

Phosphorus tribromide, reaction with carboxylic

Phosphorus tribromide, reaction with carboxylic acids

Phosphorus trichloride reaction with alcohols

Phosphorus trichloride reaction with ammonia

Phosphorus trichloride reaction with carboxylic acids

Phosphorus trifluoride reactions with

Phosphorus trihalides, reactions with alcohols

Phosphorus ylides reaction with azides

Phosphorus, elemental reactions with

Phosphorus, reaction with alkyl halides

Phosphorus, tris reaction with O-acyl thiohydroxamates

Phosphorus—hydrogen bonds reactions with

Phosphorus—oxygen bonds reactions with

Pyridine 1-oxide reaction with phosphorus oxychloride

Quinoline reaction with phosphorus oxychloride

Reaction of Alcohols with Phosphorus Tribromide

Reaction of White and Red Phosphorus with Oxygen

Reaction of phosgene with phosphorus halides

Reaction of tricoordinated phosphorus compounds with heteroatomic oxidizing agents

Reaction with Nitrogen and Phosphorus Nucleophiles

Reaction with phosphorus carbene

Reaction with phosphorus halides

Reaction with phosphorus trichloride

Reaction with phosphorus ylids

Reaction with, alkylating agents phosphorus chloride

Reactions of Alcohols with Phosphorus Halides

Reactions of White Phosphorus with Alcohols and Phenols

Reactions phosphorus oxides with water

Reactions with Phosphorus and Arsenic Compounds

Reactions with Sulfur, Boron, Carbon, Phosphorus, Arsenic, Antimony, and Bismuth

Reactions with formation of tricoordinated phosphorus

Reactions with nitrogen—phosphorus bonds

Reactions with phosphorus ylides

Reactions with phosphorus—selenium bonds

Reactions with phosphorus—sulfur bonds

Reactions with silicon—phosphorus bonds

Silver salts, Reactions with phosphorus

Silylphosphanes, phosphorus-rich by reaction of lithium phosphides with

Sodium, reaction with phosphorus

Styrene reaction with phosphorus pentachloride

Sulfur dioxide, reaction with styrene phosphorus pentachloride to give

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