Phenyl mercury salts

SYNS FENYLMERKURINITRAT MERPHENYL NITRATE MERSOLITE 7 NITRIC ACID, PHENYL-MERCURY SALT PHE-MER-NITE PHENALCO PHENITOL PHENMERZYL NITRATE PHENYL-MERCURIC NITRATE PHENYLMERCURY NITRATE PHERMERNITE... 

Ba 13155 3,3 -Bis(naphthalene-2-sulfonic acid) phenyl mercury salt Bis(phenylmercuri)methylenedinaphthalene-sulfonate ... 

Several uses have been suggested for levulinic acid and its salts. Thus, calcium levulinate seems to have advantages as a calcium carrier in tuberculosis therapy, and it is said to be more suitable than calcium gluconate for intravenous injection. A mercury salt, phenyl mercury... 

Mercapto-3-phenyl-l,2,4-thiadiazole is stable, but is completely degraded by hydrochloric acid at 150°.71 It forms characteristic salts with metals, e.g. the crystalline mercury salt.71,72,190... 

The regiospecific coupling of triphenylphosphine with the alkynyl ligands of alkynyl(phenyl)iodonium ions in such photosubstitution reactions is remarkable. This may be contrasted with the less selective and somewhat unpredictable photolytic decomposition (i.e. high pressure mercury lamp, pyrex) of alkynyl(phenyl)iodonium salts in the absence of nucleophiles (e.g. see equation 70)89. 

Cyclization of thioureidoimidazoles in the presence of sulfur-extracting agents such as mercury salts may favour 2-aminopurine formation. Thus 5-aminoimidazole-4-(iV-methyl)carboxamide (354) and some 2-substituted derivatives with phenyl isothiocyanate afforded the phenylthioureidoimidazole which when heated with mercury(II) salts produced 1,N-dimethylisoguanine and 8-substituted derivatives (355), respectively (Scheme 146) (50JCS1888). 

Here, the action of I, CN , 8203 , or even of such a complexing agent as PPhj, led to the elimination of the mercury salt and the quantitative formation of acetylene. In addition, our method of phenylation with PhSnOOH produced diphenylmercury and acetylene. 

Mercury salts have previously been shown to be capable of cleaving cyclopropyl bonds. Phenyl-substituted cyclopropanes react with mercury(II) acetate to give 3-mercurio-l-methoxy-l-phenylpropane derivatives, which can undergo further reactions such as reduction with sodium borohydride or addition to alkenes. For example, treatment of phenyl-cyclopropane (1) with mercury(II) acetate in methanol, followed by the addition of sodium chloride, produced 3-(chloromercurio)-l-methoxy-l-phenylpropane(2) in good yield.When the primary mercury adduct was reacted with alkenes without isolation, the yields were lower than those in the two-step transformation. ... 

No Name Boiling point "C Melting point, C "g phenyl ihio ether nilro- phenyl sulfone nitro- thioben- Ihio phthal- quinonyl Ihio- ether Mercury salt capto succimc acid Disulfide Miscellaneous... 

No Name Boding point C Melting point, C "d Df phenyl attro- phenyl mtro thioben thio phthal quinonyl Mercury salt mer- capto Disulfide Miscellaneous... 

No Name Boiling point C Melting point, C "d Dr 2,4-Oi- mlro> phenyl 2.4.DI- mtro phmyl 35 Di nitro thioben- 3 Nitro Ihio phthaK l-An- thra- quinon Mercury salt S-Alkyl roer- capto Disulfide, ... 

No Name Boiling poifU C Melting point C "D Df 2.4-Di- nrtro- phenyl 2.4-Di- nitro- phenyl 15 Di mtro thioben 3 Nilro-thio phthal l-An- thra- qumonyl Mercury salt S-Alkyl mcT- capto- succinic Dttulfide MtsceHaneoue... 

Phase-Transfer Catalyzed Synthesis of Organometallic Compounds and Complexes. Some organometallic compounds and complexes are efficiently synthesized using PTC methodology. For example, phenyltrihalomethyl mercury compounds, important precursors of dihalocarbenes generated in nonba-sic conditions are readily prepared by treatment of a haloform solution of phenyl mercury chloride with aqueous NaOH saturated with KF, in the presence of TAA salt (eq. 182). 

The interaction of 4-phenyl-3-imidazoline-l-oxyl (13c) with PdCl2 led to cyclometalation product 116, a dinitroxide with halo gen-bridging atoms (Ovcharenko et al, 1979). The reaction of 13c with mercury salts... 

Pyridazines form complexes with iodine, iodine monochloride, bromine, nickel(II) ethyl xanthate, iron carbonyls, iron carbonyl and triphenylphosphine, boron trihalides, silver salts, mercury(I) salts, iridium and ruthenium salts, chromium carbonyl and transition metals, and pentammine complexes of osmium(II) and osmium(III) (79ACS(A)125). Pyridazine N- oxide and its methyl and phenyl substituted derivatives form copper complexes (78TL1979). 

Among the many methods of generating difluorocarbene, the treatment of bromodifluoromethylphosphonium bromides with potassium or cesium fluoride is particularly useful at room temperature or below [II, 12 13] The sodium iodide promoted decomposition of phenyl(trifluoromethyl)mercury is very effective at moderate temperatures [S, 14] Hexafluoropropylene oxide [/5] and chlorodifluo-roacetate salts [7] are excellent higher temperature sources of difluorocarbene... 

The phosphonium salt method works best with nucleophilic olefins [//, 12, 16, 17, 18, 19] (Table 1 and equations 1-3) and has been used m mechanistically important studies of difluorocarbene additions to norbornadienes [20 21, 22, 23] that provided the first example of a concerted homo-l,4-addition (equation 4) A recent modification uses catalytic 1,4,7,10,13,16 hexaoxacyclooctadecane (18-crown-6) to shorten reaction times and increase yields with less nucleophilic olefins [12] (Table 1) Neither procedure, however, compares with the use of phenyl(tri-f1uoromethyl)mercury or (trifluoromethyl)trimethyltin reagents [efficient reactions with less nucleophilic olefins (equations 3 and 5) and cyclic dienes [24, 25] (equations 6 and 7)... 

The proposed mechanism is based on the basis of the fact that ylides (Scheme 23 and Scheme 24) undergo bond fission between the phosphorus atom and the phenyl group in TPPY as reported by Nagao et al. [51] and between the sulfur atom and the phenyl group in POSY as observed in triphenylsulfonium salts [52-55] when they are irradiated by a high-pressure mercury lamp. The phenyl radicals thus produced participate in the initiation of polymerization. 

---