Chloride adduct

Various vinyl chloride adducts can be formed under acid-catalyzed Friedel-Crafts conditions. Vinyl chloride can add tertiary alkyl haHdes (54). It can... 

Reactions in chloroaluminate(III) salts and other related binary salts often proceed smoothly to give products. However, it should be noted that these salts are water-sensitive and must be handled under dry conditions. They react with water to give hydrated aluminium(III) ionic species and HCl. When a reactant or product contains a heteroatomic functional group, such as a ketone, a strong ketone/alumini-um(III) chloride adduct is formed. In these cases, this adduct can be difficult to separate from the ionic liquid at the end of a reaction. The isolation of the product often... 

Bicyclo[2.2.1]hepta-2,5-diene, nitrosyl chloride adduct, 46, 74 reaction with acetic acid to yield nortricyclyl acetate, 46, 74 Bicyclohexyl, 46, 61 Bicyclohexylidene, 47, 34 ejSO-e s-BlCYCLO[3.3.0]OCTANE-2-CAR-BOXYLIC ACID, 47, 10 Bicyclopentadienylidene, octa-chloro-, 46,93... 

A whole series of (imidazol-2-ylidene)gold(i) complexes with the 1 1 stoichiometry has been prepared from the readily available silver chloride adducts, which upon reaction with (Me2S)AuCl, followed by chloride metathesis, give the complexes shown in Scheme 60. 

In contrast to Ni, alkylpalladium precursors can be easily prepared and isolated owing to their greater stability (Scheme 2). The monomethyl chloride adducts of formula (diimine)PdMeCl can be conveniently synthesized via diimine displacement of other weakly coordinating ligands, such as COD from Pd(COD)MeCl (COD = 1,5-cyclooctadiene) [44], or by in situ alkylation-complexation with tetramethyltin [52], The chloride ligand can then be cleanly abstracted by metathesis with NaBAF... 

Thiolation is restricted by more effective nitrogen donors or steric limitations. The bis(aminothiolate) complexes are obtained from bismuth nitrate or chloride and the hydrogen chloride adduct of the thiol and essentially independent of stoichiometry. The nitrogen-bismuth interactions in these complexes [e.g., Bi(SCH2CH2NH2)2(N03)(H20) 54,... 

Uranium(IV) chloride adducts of Ph2SO have been isolated (73) of the type [U(Ph2S0)2Cl4]-nH20, and infrared measurements show the sulfoxide to be O-bonded. Analogous complexes of diphenyl sulfone could not be synthesized (251). 

Treatment of triphenyllead chloride with the lithium compound 7 afforded first the intramolecular [4 + 2]-coordinated tetraarylplumbane 8 as colorless crystals in 70% yield. Repeated treatment of 8 with triphenyllead chloride finally furnished the pentacoordinated compound 9 in the form of its triphenyllead chloride adduct 10 in 69% yield, also as colorless crystals. The compounds 8 and 10 were characterized by a complete NMR dataset, and by X-ray crystallography (Scheme l).23... 

In (—)-ion mode besides the [M — H] the chloride adduct also appeared in the MS spectra with a similar intensity, but optimisation of the ESI interface parameters allowed the formation to significantly shift towards the [M — H] ion, while the chloride adduct was largely suppressed. The molecular ion yielded two fragments, one including the alkyl chain [CH3-N-CO-R]-, the other the sugar part [Gluc-N-CH3]. ... 

Benzyne, intermediate in preparation of phenyl -butyl ether, 46, 90 Bicyclo[2.2.1]hepta-2,5-diene, nitrosyl chloride adduct, 46, 74... 

Several additives were tested with a series of explosives in order to enhance ESI intensities [15—17]. Nitramine and nitrate ester explosives showed enhanced response for ammonium nitrate additive, by forming [M + NOs] adduct ions in the negative-ion mode. Nitrate adduct ions were more intense than trifluoroacetate (TFA) or chloride adduct ions by a factor of 6-40. The base peak in the negative-ion mass spectrum of TNT, with 1 mM ammonium nitrate in the mobile phase was at m/z 226 due to the [M-H] ion. 

A.H. Lawrence, P. Neudorfl andJ.A. Stone, The formation of chloride adducts in the detection of dinitrocompounds by ion mobility spectrometry. International Journal of Mass Spectrometry 209(2—3) (2001) 185-195. 

The main renewable resource for L-carvone is spearmint oil (Mentha spicata), which contains up to 75% of this flavour chemical. There also exists a synthetic process for the manufacturing of L-carvone, which is based on (-t)-limonene, which is available as a by-product of the citrus juice industry as a major component of orange peel oil (Scheme 13.4). The synthesis was developed in the nineteenth century and starts with the reaction of (-t)-limonene and nitrosyl chloride, which ensures the asymmetry of the ring. Treatment with base of the nitrosyl chloride adduct results in elimination of hydrogen chloride and rearrangement of the nitrosyl function to an oxime. Acid treatment of the oxime finally results in l-carvone. 

It is of interest to note that the addition of nitrosyl chloride to a molecule such as cis,trans, trans-1,5,9-cyclododecatriene takes place only at one of the trans bonds [72], It would appear from this that, in a competitive reaction between cis and trans double bonds, the reaction at the trans bond is favored. However, further work is required to substantiate this generalization, particularly in view of the fact that in an experiment involving both cis- and trans-stilbene the nature of the nitrosyl chloride adduct was not fully determined [55]. 

Diphenyl-l,2,4-thiadiazole results in small quantities, together with 2,4,6-triphenyltriazine and other products, from the action of alcoholic ammonia and mercuric oxide, or mercuriammonium chloride, or lead hydroxide on A-thiobenzoylbenzamidine (78 R = Ph),10B and from the treatment of the mercuric chloride-adduct of this substituted amidine (78 R = Ph) with potassium hydroxide104 (probably by air oxidation). 

Arsolanes (4) have the properties of normal tertiary arsines. They react with halogens to form dihalides, form mercury(II) chloride adducts, are oxidized to arsine oxides and... 

T. Kondo, H. Abe, and T. Goto, Efficient synthesis of 2a-glycoside of W-acetylneuraminic acid via phenylsulfenyl chloride adduct of 2-deoxy-2,3-dehydro-lV-acetylneuraminic acid methyl esier tetra-O-acetate, Chem. Lett., p. 1657 (1988). 

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