Mesityl isocyanide

Malonic acid, amino-, diethyl ester, HYDROCHLORIDE, 40, 24 Malonic acid, bts(hydroxymethyl)-, DIETHYL ETHER, 40, 27 Malonitrile, condensation with tetra-cyanoethylene, 41, 99 2-Mercaptopyrimidine, 43, 6S hydrochloride of, 43, 68 Mercuric oxide in preparation of bromo-cyclopropane, 43, 9 Mesityl isocyanide, 41,103 5-Methallyl-l,2,3,4,5-pentachlorocyclo-pentadiene, 43, 92 Methane, dimesityl-, 43, 57 Methanesiileinyl chloride, 40, 62 Methanesulfonic acid, solvent for making peroxybenzoic acid from benzoic acid, 43, 93... 

The first stable group 14 heteroallene, a l-stannaketenimine (99), was reported by Griitzmacher et al. in 1992." Compound 99 was synthesized in 9 % yield by adding diarylstannylenc 97 and mesityl isocyanide 98 in hexane (Eq. (12)). The bonding in 99 can be described as a stannylene-isocyanide adduct rather than a... 

Surprisingly, no reaction occurred between CsH5Ni(PPh3)CgH5 and mesityl isocyanide, a result which the authors attribute to steric effects. 

The Si=As bond reacts with organic isocyanides in the same way that the Si=P bond does. Thus, with mesityl isocyanide and 1,6-diisocyano-hexane 44a forms the unusual arsaalkene derivatives 53 and 54, according to Scheme 14. Their molecular structures were determined by X-ray crystallography.39,40... 

The only doubly bonded tin compound for which the IR spectrum has been reported is the stannaketenimine [2,4,6-(CF3)3C6H2]2Sn= C=N[2,4,6-(CH3)3C6H2)]. The C—N stretching vibration (2166 cm-1) is shifted relative to that of mesityl isocyanide (2118 cm-1) this phenomenon is also observed for isocyanide-transition-metal complexes.87... 

A stannaketenimine has been synthesized by the low-temperature reaction of a diarylstannylene with mesityl isocyanide.87 The stannaketenimine is thermally stable, crystals being obtained by sublimation at 40°C/0.01 mmHg. In this case, the stannylene acts as the Lewis acid for formation of the adduct and, along with the stannenes described above, covers the full range of bonding modes available to the stannenes. 

Mesityl isocyanide, 41,103 Methane, diazo-, 41,16 see also Diazomethane... 

The stannaketenimine 21-43 separates as yellow crystals when a solution of the stan-nylene and mesityl isocyanide is cooled to -78 °C. In solution at room temperature it is in equilibrium with its progenitors and shows the reactions of the stannylene, reacting with t-butyl alcohol to give Sn(OBu )2 and MesNC, and with 2,3-dimethylbutadiene to give the stannacyclopentene cycloadduct.78... 

Cycloaddition Reactions with Mesityl Azide, Diphenyldiazomethane, Isocyanides, and Benzonitrile... 

Methylhydroxybenzene, see 2-Methylphenol p-Methylhydroxybenzene, see 4-Methylphenol Methylisoamyl acetate, see sec-Hexyl acetate Methyl isobutenyl ketone, see Mesityl oxide Methylisobutylcarbinol acetate, see sec-Hexyl acetate Methyl isobutyl ketone, see 4-Methyl-2-pentanone Methyl isocyanide, see Dimethylamine, Methyl isocyanate Methyl ketone, see Acetone... 

This procedure illustrates the best way to prepare aryl isocyanides. It is quite general, having been used by Ugi and Meyr e to make the following isocyanides from the corresponding form-amides phenyl (56%), />-tolyl (66%), 2,6-dimethylphenyl (88%), mesityl (80%), o-chlorophenyl (43%), -chlorophenyl (54%), 2-chloro-6-methylphenyl (87%), -methoxyphenyl (64%), p-di-ethylaminophenyl (75%), -nitrophenyl (41%), and 2-naphthyl (50%). Aliphatic isonitriles are generally best prepared by a simpler procedure involving the action of phosphorus oxychloride on an N-alkylformamide in the presence of pyridine.7... 

HN(t-Bu)COC6H2Me3. t-Butyl isocyanide also inserts into the chromium-carbon bond of the mesityl complex, but only a single insertion is observed, and Cr(=N-t-Bu)2 ] -[t-BuN=C(C6H2Me3)] (C6H2Me3) is formed. An -aminoacyl is also the product of the reaction between Cr(=N-t-Bu)2Cl2(t-BuNC) and methyllithium. Presumably, methyl replaces one of the chlorides, then migrates to the isocyanide carbon to give Cr(=N-t-Bu)2 [ 2-[t-BuN=C(Me)] Cl]. 

Reactions of [Cp Ir(NR)] R = Bu 662a or 2,6-Pr 2C6H3 662b with 2,6-xylyl isocyanide [(Xyl)NG], mesityl isocyanate, and mesityl azide were studied by Danopoulos et The bridged dimers [Cp"lt(/r-NCsFl9)]2... 

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