Indium III acetate

Scheme 9.6 Ruthenium catalysed aldol reaction with indium(III) acetate as co-catalyst...

The Mukaiyama aldol reaction involves the addition reaction of a TMS-enol ether to an aldehyde. Loh et al. have investigated the reaction of l-methoxy-2-methyl-l-trimethylsiloxypropene with aliphatic and aromatic aldehydes in chloride, [BF4] and [PFg] ionic liquids. The yields varied considerably and it was found that the chloride ionic liquids gave the best yields (50-74%) [230]. Ruthenium complexes have been used in the addition of aUyl alcohols to aldehydes and imines in [BMIM][Pp6] [231] (and later in a very similar paper [232]). The addition of a cootalyst such as indium(iii) acetate was found to dramatically improve the yields in some cases and it was foimd that the ionic Uquid/catalyst combination could be recycled. Examples of these reactions are shown in Scheme 5.2-100. 

Some simple organic reagents. The In203-aq, but not the metal, dissolves in cold CH3CO2H. When boiled with CH3CO2 , In forms a basic indium(III) acetate only slightly solnble in water. 

Yadav JS, Reddy BVS, Madhuri C, Sabitha G (2001) Indium(III) chloride catalyzed allylation of gem-diacetates a facile synthesis of homoallyl acetates. Chem Lett 18... 

Tris(dimethyl sulfoxide)indium(III) chloride is a white crystalline nonhygro-scopic compound, soluble in alcohols, ethyl acetate, and nitromethane. Decomposition occurs at 130°. The infrared spectrum and the results of thermal stability studies have been reported.6 The presence of dmso can be verified from the infrared spectrum,6 which shows C—H vibrations, and =0 at 945, 960, and 995 cm. ... 

Indium(III) chloride catalyzes the allylation of gem-diacetates with allyltrimethylsi-lane to afford the corresponding homoallylic acetates (Scheme 8.131) [174]. Gly-cals react with silyl nucleophiles, e.g. allyltrimethylsilane, cyanotrirnethylsilane, and azidotrimethylsilane, in the presence of a catalytic amount of InBr, to give the corresponding 2,3-unsaturated allyl-, cyano-, and azidoglycosides, respectively (Scheme 8.132) [175]. 

Both irradiation by visible light and pyridine are required for the above insertion. The same carboxylate complexes can be prepared by reaction of acetic acid with either the alkyl(aryl)indium(III) porphyrins or the aquohydroxoindium(III) porphyrins. 

Triethylsilane and trityl salts.or Trimethylsilyl Triftuoro-methanesulfonate are effective for the reduction of various ketones and acetals, as are combinations of Chlorotrimethylsi-lane and indium(III) chloride and Tin(II) Bromide and Acetyl Bromide. Isophthaldehyde undergoes reductive polycondensation to a polyether when treated with triethylsilane and Triphenyl-methyl Perchlorate. ... 

New catalysts have heen recently developed for promoting the aldol-type addition of acetate-derived silyl ketene acetals with high efficiency 10-methylacridinium perchlorate (5 mol %), cationic mono- and dinuclear iron complexes (5 mol %), t-hutyldimethylsilyl chloride-indium(III) chloride (10 mol %), [l,2-henzenediolato(2—)-0,0 ]oxotitanium(20 mol%), phos-phonium salts (7 mol%), and trityl salts (5-20 mol%). ... 

Bis(acrylonitrile)nickel(0), 2312 l,2-Bis(dichlorophosphino)ethane, 0797 Bis(trimethylsilyl) phosphonite, 2611 Bromodimethylborane, 0887 Calcium silicide, 3943 Cerium trisulfide, 3967 Chromium(II) acetate, 1493 Chromium(II) oxide, 4241 Cobalt(III) nitride, 4214 Cobalt(II) sulfide, 4218 Dicobalt boride, 0128 Dimethyl ethanephosphonite, 1732 Europium(II) sulfide, 4293 2-Furaldehyde, 1836 Indium(II) oxide, 4641... 

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