摘要:
Phosphorus-containing compounds such as cyanophosphonate derivatives are important precursors for the synthesis of organophosphorus compounds, which have numerous applications, for example, in herbicides, insecticides, fertilizers, flame retardants and plasticizers. Cyanophosphonate derivatives can be further converted to aminomethylphosphonate derivatives, which have been particularly important precursors in the synthesis of N-phosphonomethyglycine, a highly effective commercial herbicide (available under the trade name Roundup) useful for the control of a large variety of weeds. The syntheses of such organophosphorus compounds have commonly used a hologen derivative of phosphorus as a starting material.
摘要:
A method for producing a compound represented by General Formula (1), the method including: reacting a compound represented by General Formula (3) and a compound represented by General Formula (4):
where R 1 and R 2 each represent aliphatic group which may have substituent, or aromatic group which may have substituent (with the proviso that R 1 and R 2 are different groups), R 3 represents aromatic group which may have substituent, and R 4 represents aliphatic group which may have substituent, or aromatic group which may have substituent,
where R 1 and R 2 each represent aliphatic group which may have substituent, or aromatic group which may have substituent (with the proviso that R 1 and R 2 are different groups), and R 3 represents aromatic group which may have substituent,
where R 4 represents aliphatic group which may have substituent, or aromatic group which may have substituent.
摘要:
A process for preparing cyanophosphonate derivatives involves contacting phosphoric anhydride (P4O10) and a cyanide, preferably in the presence of a Lewis base, in a reaction mixture under sufficient conditions to produce a cyanophosphonate derivative. The cyanophosphonate derivative can be subsequently hydrogenated to produce an aminomethylphosphonate derivative.
摘要:
A process for preparing cyanophosphonate derivatives involves contacting phosphoric anhydride (P4O10) and a cyanide, preferably in the presence of a Lewis base, in a reaction mixture under sufficient conditions to produce a cyanophosphonate derivative. The cyanophosphonate derivative can be subsequently hydrogenated to produce an aminomethylphosphonate derivative.
摘要:
Compounds which are inhibitors of cholesterol biosynthesis (by inhibiting de novo squalene biosynthesis), and thus are useful as hypocholesterolemic agents and antiatherosclerotic agents, are provided which have the structure wherein R 2 is a metal ion, lower alkyl or H;
R 3 is a metal ion or lower alkyl; R is R 1 -(CH 2 ) n -, R 1 -(CH 2 ) m -O- or R 1 -(CH 2 ) m -OCH 2 -, wherein n is 1 to 4 and m is 0 to 3, and R 1 is R 5- Q 1 -Q 2 -0 3 - wherein R 5 , Q 1 , Q 2 and Q 3 are as defined herein.
New intermediates, new methods of preparation and a method for using such compounds to inhibit cholesterol biosynthesis are also provided.
摘要:
The invention relates to a method for producing amines, comprising the following steps: a. reacting a (i) carboxylic acid amide of general formula (I) or (ii) carboxylic acid diamide of general formula (II) or (iii) di-, tri-, or polypeptide or (iv) peptide amide having a carboxy-terminal amide function with an alkylating agent, b. adding a hydrogenation catalyst to the reaction mixture at a molar ratio of 1:10 to 1:100,000 with respect to carboxylic acid amide, carboxylic acid diamide, di-, tri-, or polypeptide, or peptide amide, c. reacting the reaction mixture with hydrogen, wherein a hydrogen pressure of 0.1 bar to 200 bar is set and wherein a temperature in a range of 0°C bis 250°C is set.
摘要:
The novel cyanophosphonate compounds of the present invention include cyanophosphonate salts, cyanophosphonate monoacid salts, cyanophosphonate monoacid esters, cyanophosphonate monoester salts and cyanophosphonate methylester salts.
摘要:
A process for preparing cyanophosphonate derivatives involves contacting a phosphate ester and cyanide in a reaction mixture under conditions sufficient to produce a cyanophosphonate derivative. That cyanophosphonate derivative product can subsequently be hydrogenated to produce an aminomethylphosphonate derivative.
摘要:
Novel cyanophosphorus compounds are disclosed. The preparation, purification, and characterization of dicyanophosphinate, cyanopolyphosphates, tricyanocyclotriphosphonate and tetracyanocyclotetraphosphate are presented.
摘要:
A method for producing a compound represented by General Formula (1), the method including: reacting a compound represented by General Formula (3) and a compound represented by General Formula (4): where R 1 and R 2 each represent aliphatic group which may have substituent, or aromatic group which may have substituent (with the proviso that R 1 and R 2 are different groups), R 3 represents aromatic group which may have substituent, and R 4 represents aliphatic group which may have substituent, or aromatic group which may have substituent, where R 1 and R 2 each represent aliphatic group which may have substituent, or aromatic group which may have substituent (with the proviso that R 1 and R 2 are different groups), and R 3 represents aromatic group which may have substituent, where R 4 represents aliphatic group which may have substituent, or aromatic group which may have substituent.