2.2- Dimethoxypropane: Propane, 2,2-dimethoxy

Bromo-3,3-dimethoxypropane Propane, 3-bromo-1,1-dimethoxy- (9) (36255-44-4) Acrolein (8) 2-Propenal (9) (107-02-8)... 

The reaction of sucrose with a combination of 2,2-dimethoxy-propane-N,N-dimethylformamide-p-toluenesulfonic acid has been exploited to give various, interesting, cyclic acetal derivatives.32,83-85 This combination of reagents for acetonation is known to give strained, and otherwise inaccessible, acetals of monosaccharides.86-89 Treatment of sucrose with 2,2-dimethoxypropane in N,N-dimethyl-formamide in the presence of a catalytic proportion of p-toluenesul-fonic acid for 80 min at room temperature afforded a mixture containing 4,6-O-isopropylidenesucrose, 2,1 4,6-di-O-isopropyli-... 

Dimethoxypropane Acetone, dimethyl acetal (8) Propane, 2,2-dimethoxy-(9) (77-76-9)... 

Shin and Godber (228) used a silica column and a mobile phase composed mainly of isooctane and small amounts of ethyl acetate, acetic acid, and 2,2-dimethoxypropane. The acetic acid component reduced retention times of the late-eluting E vitamers, presumably by competing with water and polar material for binding to silanol groups on the silica surface. 2,2-Dimethoxy-propane reacts with water to form acetone and methanol, and its inclusion stabilized retention times and reduced the need for column regeneration. Chromatograms of vitamin E vitamers in a standard solution and in a saponified rice bran sample are shown in Fig. 13. 

Erythorblc acid O-erythro-Hex-2-enolc acid, y-lactone (8,9) (89-65-6) 2,2-Dimethoxypropane Acetone, dimethyl acetal (8) Propane, 2,2-dimethoxy-(9) (77-76-9)... 

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