Tartartic acid

Acetylene, oxalic acid, tartartic acid, ammonium compounds, fulminic acid... 

Acetylene, oxalic acid, tartartic acid, ammonium compounds, fulminic acid Carbon tetrachloride, carbon dioxide, water Ammonium nitrate and other ammonium salts... 

A Figure 16.1 Two oiganic acids Tartartic acid, >12641140, and malic acid, H2C4K4O5. 

Analogously, PRC has been exploited to selectively epimerize carbon centers of the t)rpe R R C(H)OR, for example, to convert a readily available carbohydrate-based diastereoisomer into a rarer one, and in ring opening of acetals to benzoate esters (eq 9) shows the conversion of a derivative of natural (i ,i )-tartartic acid into that of unnatural (T -malic acid. 

Racemic A,A -dimethyl-l,2-diphenylethylenediamine was treated with L-(+)-tartaric acid to afford a pair of diastereomeric salts which were separated overnight by selective precipitation from ethanol. The (R,R)-diamine was separated by filtration, followed by extraction with base to remove the tartartic acid. Removal of the solvent produced the crude diamine in 90% yield and greater than 99% ee. The (5,5)-diamine was isolated by concentration of the mother liquor and the same extraction procedure to... 

The first example of catalytic, enantioselective Sakurai reaction was effected by means of Yamamoto s chiral acyloxyborane (CAB) catalyst 96 (Table 11). The CAB catalysts are derived from tartartic acid, and 97 gave a better yield than 96. ... 

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