Organoarsenics reactions with

Reaction of organoarsenic halides with metals or with metal hydrides gives diarsines as shown in equations 183 , 184 , 185 , 186 187 , 188 , 189 , 190 , 191 and 192 °°. These can be considered as reactions between the organoarsenic anionic species formed upon the reduction and the halides. 

Reaction of organoarsenic anions with metal halides... 

Reaction of organoarsenic halides with metal anions... 

The molecular characterization of methylarsonic acid, phenylarsonic acid and the inorganic anion, arsenate, found in a methanol extract of a Green River Formation Oil shale sample was accomplished by HPLC-GFAA analysis In addition, derivatization of the acids, HPLC purified, by reaction with 3-methylcatechol to form the five coordinate organoarsenic catecholates as well as reaction, via trimethylsilylation, of the ammonium salt of arsenate to form tristrimethylsilylarsenate was followed by GC-EIMS analysis to provide unequivocal evidence for the presence of these organometallic and inorganic compounds of arsenic as natural products in oil shale ... 

Many organoarsenic compounds are prepared by reactions of AsC13 with alkyl group transfer agents such as Grignard reagents, lithium alkyls, or aluminum alkyls. Typical reactions include... 

Relatively few organoarsenic compounds that contain an As-B bond are known. > > In most cases, these are synthesized by the straightforward reaction of the primary, secondary, and tertiary arsine with diborane or BH3 THF (equation 29). As-B bonding also results when the BH3 moiety reacts with Sn-As and As-P-As bonded compounds (equations 30 and 31). ... 

Reaction of organoarsenic(V) halides or oxides with several nitrogen nucleophiles gives the corresponding nitrogen compounds. Several examples are shown in equations... 

The pyrolysis of organoarsenic compounds containing the arsenyl moiety has some limited preparative applications [arsenyl (As=0) by analogy with phosphoryl (P=0)]. The compounds are based on the arsonic acid RAs(0)(0H)2, the arsinic acid R2As(0)0H and the arsine oxide R3As=0 structures. The acids are in interesting contrast with the phosphorus series. The phosphonic and phosphinic esters are prepared from the phosphorus(III) precursors via the Arbuzov synthesis. This synthetic route fails with the arsenic analogues, and further, if an alkyl halide or a salt is added in the pyrolysis of arsonic or arsinic acid esters a retro-Arbuzov reaction takes place . ... 

Arsenic found in non olefinic liquid hydrocarbons is present as organoarsenic species and thus must be converted to a more reactive form to be efficiently trapped. This can be achieved using the single step process. Feedstock treatment with a metal sulfide containing catalyst adsorbent, under the appropriate reaction conditions permits the total conversion and trapping of arsenic compounds as shown in the following mechanism ... 

Simultaneously, we were studying the reactions of methyl- and phenylarsonic acids with substituted catechols. In that study, (29) we discovered that the reaction products, five-coordinate, organoarsenic catecholates, could be gas chromatographed on fused silica capillary columns (30 m x 0.3 nm DB-5) and characterized by mass spectrometry (GC-MS). Therefore, we decided to apply this derivatization technique to the unequivocal identification of methyl- and phenylarsonic acids present in the oil shale extract. 

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