4672-38-2Relevant articles and documents
An optimized and scalable synthesis of propylphosphonic anhydride for general use
Pizova, Hana,Bobal, Pavel
, p. 2014 - 2017 (2015/03/30)
Abstract Propylphosphonic anhydride (T3P) is an effective coupling and dehydrating agent, which has been used for a large number of chemical transformations. An efficient and versatile synthetic method is described to synthesize propylphosphonic anhydride (T3P) in pure form, in an overall yield of 51% in four steps from commercially available diethyl phosphonate.
Process for preparing alkylphosphonic acids
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, (2008/06/13)
The present invention relates to a process for the preparation of alkylphosphonic acids, which comprises reacting phosphorous acid (H3PO3) with short-chain olefins, and to the use of the products prepared by this process.
Synergistic herbicidal compositions
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, (2008/06/13)
Synergistic herbicidal activity is displayed by compositions comprising the following two components: (a) a pyrrolidone of the formula STR1 in which X is selected from the group consisting of hydrogen, chlorine and methyl; Y is selected from the group consisting of hydrogen, chlorine and bromine; Z is selected from the group consisting of chlorine and bromine; R1 is selected from the group consisting of hydrogen and C1 -C4 alkyl; R2 is selected from the group consisting of hydrogen, halogen, C1 -C4 alkyl, acetyl, trifluoromethyl, nitro, cyano, C1 -C4 alkoxy, C1 -C4 alkylthio, C1 -C4 alkylsulfinyl, C1 -C4 alkylsulfonyl, trifluoromethylsulfinyl, trifluoromethylsulfonyl, pentafluoropropionamido, and 3-methylureido; and R3 is selected from the group consisting of hydrogen, C1 -C4 alkyl, chlorine and trifluoromethyl; and (b) a phosphonic acid of the formula STR2 in which R4 is selected from the group consisting of C1 -C4 alkyl, C1 -C4 haloalkyl, and --CH2 NHCH2 COOH, at a weight ratio of (a) to (b) of from about 0.1:1 to about 20:1.
