Studies on the Synthesis and Properties of a-Amino Phospho(i)nic Acids

Abstract

Abstract: 38 Derivatives of a-amino phospho(i)nic acids(RCH(NH₂)-P(O)-(OH)R',R,R'=alkyl or aryl) have been synthesized by the addition reaction of the phosphorous compounds containing P-H bond to imine compounds in which the imino group was protected with actyl or carbobenzyloxy group. The products could be purified by recrystallization, ion exchange technique or repeated acid-base neutralization. Some of the a-amino phosphonic acids contain one moleculer of water when they were recrystallized from a mixture of alcohol and water. The pK_avalues of the title compounds have been measured. It has been found that all of these compounds have herbicidal and fungicidal activities.

Key words: a-Amino phospho(i)nic acid, Synthesis, Crystal water, pK_a, Herbicidal and fungicidal activities

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Yang Huazheng, Wang Jianwu, Cheng Muru, Wang Lingxiu, Zhang Yufen . Studies on the Synthesis and Properties of a-Amino Phospho(i)nic Acids[J]. Chem. J. Chinese Universities, 1989, 10(3): 254.

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Studies on the Synthesis and Properties of a-Amino Phospho(i)nic Acids

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