CONSTITUTION:Diesters of oxalic acid expressed by formula II (R is 1-6C linear or branched alkyl, cycloalkyl, alkenyl, cycloalkenyl, benzyl, methoxybenzyl or nitrobenzyl) are hydrolyzed by using hydrogencarbonate salt expressed by formula III (M is alkali metal) to afford the objective compound ...
Although dietary exposures to oxalic acid are not expected to be at levels of concern, some studies have reported poisoning cases by food. In occupational settings, exposure is likely to occur through inhalation of vapors and eye or skin contact. However, these risks should be low as long as...
The lithium salt of tris(oxalato)phosphate 272 has been isolated from the reaction of oxalic acid with PCl5 followed by addition of lithium hydride (Equation 75) <2004CEJ2451>. (74) (75) A range of neutral tricyclic hexacoordinate spirophosphoranes with internal N → P dative coordination ...
Spinach is a good source of iron (3.1 mg), phosphorus (51 mg), and potassium (470 mg). However, the calcium is said to be unavailable due to the presence of oxalic acid, forming calcium oxalate. It may also contain appreciable amounts of nitrate and nitrite, which are injurious to ...
Under the influence of the vanadate the hemihydrate of cyclohexanedione is rapidly converted to adipic acid, whereas in the absence of vanadate this substance is slowly broken down to glutaric acid, succinic acid and oxalic acid. Copper ... WJV Asselt,DWV Krevelen - 《Recueil Des Travaux Chimiqu...
succinic acid, glycolic acid, stearic acid, citric acid, maleic acid, malonic acid, methane sulfonic acid, tartaric acid, maleic acid, phenylacetic acid, glutamic acid, benzoic acid, salicylic acid, 2-acetoxybenzoic acid, fumaric acid, toluene sulfonic acid, oxalic acid, or trifluoroacetic acid....
A thickened acid cleaner concentrate composition comprising an inorganic acid, e.g., hydrochloric, an organic acid, e.g., oxalic, a nonionic surfactant, an... RE Gansser,GS Gomes,JV Otrhalek 被引量: 72发表: 1977年 Negative regulation of the proteolytic activation of a developmental transcript...
A composition comprises at least one oxalic acid derivative and/or mixture of oxalic acid derivatives. A composition comprises at least one oxalic acid derivative of formula B'-O-C(O)-C(O)-X (I) excluding azetidin-1-yl-oxo-acetic acid 2-... SURBURG HORST,LOOFT JAN,OERTLING HEIKO,.....
PROCESS:The compound of formulaIcan be prepard, e.g. by reacting 3-acetyl-1- alkyl-4-hydroxy-2-quinolone of formula II with an oxalic acid diester, cyclizing the product in the presence of ab acid catalyst, converting the resultant carboxylic acid compound of formula III to carboxylic acid...
acetic acid, propionic acid, butyric acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, oxalic acid, succinic acid, glutaric acid, fumaric acid, maleic acid, adipic acid, citric