摘要:
Novel compositions that are useful as nutrients are disclosed. These compounds are preferably water soluble parenteral nutrients and are glycerol esters of .beta.-acyloxybutyrates of the formula ##STR1## wherein each R is the same or different and is hydrogen, or --COCH.sub.2 CHOR'CH.sub.3), provided that at least one R is not hydrogen and wherein R' is a linear acid ester of even carbon number from 2 to 20 carbons. These compositions are useful as a substitute for glucose in feeding.
摘要:
Novel parenteral nutrient compositions are disclosed. These compositions are sterile aqueous solutions containing an effective amount of at least one glycerol bisacetoacetate of the formula: ##STR1## wherein one R group is hydrogen, and two R groups are --COCH.sub.2 COCH.sub.3). These compositions are useful as a substitute for glucose in intravenous feeding.
摘要:
A process for the production of water soluble glycerol esters useful as parenteral nutrients is disclosed. The process comprises the reaction of glycerol or a protected glycerol and an acetoacetate ester or acetoacetate precursor, yielding an acetoacetyl glycerol which is thereafter reduced, providing a glycerol ester of 3-hydroxybutyric acid.
摘要:
Disclosed is a novel monomer composition and its preparation that is useful in the production of polyesters. This novel monomer composition is 1-acetoacetamido-2,3-propane diol and can be used in the preparation of polyesters in combination with a dicarboxylic acid.
摘要:
Disclosed is a process for the preparation of .alpha.-haloacetoacetic esters by the reaction of an alkali metal alkoxide with a 5-halo-4H-1,3-dioxin-4-one compound, the desired product being obtained as an alkali metal salt which may be converted to the corresponding free ester by treating with acid.
摘要:
Disclosed are certain novel 2,2'-bisacetoacetates useful as crosslinking agents and a process for the preparation therefor. Also provided are novel enamel compositions containing the crosslinkers and coatings and articles coated with thermosetting coating compositions crosslinked with these novel crosslinkers.
摘要:
A process is disclosed for the preparation of .beta.-ketocarboximides of .alpha.,.beta.-unsaturated amides from 1,3-dioxin-4-ones and .alpha.,.beta.-unsaturated amides using an inert solvent system capable of maintaining both reactants substantially in homogeneous solution throughout the reaction. This process provides greatly improved yields of .alpha.,.beta.-ketocarboximides of .alpha.,.beta.-unsaturated amides as well as a simple method of recovering same since such products can readily be precipitated from the reaction mixture.
摘要:
Disclosed are certain novel 2,2'-bisacetoacetates useful as crosslinking agents and a process for the preparation therefor. Also provided are novel enamel compositions containing the crosslinkers and coatings and articles coated with thermosetting coating compositions crosslinked with these novel crosslinkers.
摘要:
Disclosed are novel 5-halo-4H-1,3-dioxin-4-ones and their preparation by treating a compound having the formula ##STR1## with X.sub.2 or SO.sub.2 X.sub.2 wherein X is Cl or Br.