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    • 5. 发明授权
    • Method for producing L-2-amino-4-(hydroxymethylphosphinyl)-butanoic acid
    • 制备L-2-氨基-4-(羟甲基氧膦基) - 丁酸的方法
    • US07772426B2
    • 2010-08-10
    • US11909839
    • 2006-03-28
    • Nobuto MinowaNozomu NakanishiMasaaki Mitomi
    • Nobuto MinowaNozomu NakanishiMasaaki Mitomi
    • C07C227/32
    • C07B53/00C07F9/301C07F9/65683
    • Disclosed is a method for efficiently and highly selectively producing L-2-amino-4-(hydroxymethylphosphinyl)-butanoic acid, which is useful as a herbicide, through a catalytic asymmetric synthesis reaction. Specifically disclosed is a method for producing L-2-amino-4-(hydroxymethylphosphinyl)-butanoic acid which is characterized in that a dehydroamino acid is subjected to an asymmetric hydrogenation by using a rhodium catalyst represented by the formula (2) below and having an optically active cyclic phosphine ligand, and then the resulting product is subjected to hydrolysis: [Rh(R4)(L)]X  (2) [where R4 represents 1,5-cyclooctadien or norbornadien; L represents a substance represented by the following formula (6): (wherein R5 and R8 respectively represent a C1-4 alkyl group; R6 and R7 respectively represent hydrogen atom or hydroxyl group; and Y represents a group selected from groups represented by the following formula (7): (where Me represents methyl group)).].
    • 公开了通过催化不对称合成反应有效和高选择性地生产可用作除草剂的L-2-氨基-4-(羟甲基氧膦基) - 丁酸的方法。 具体公开了一种生产L-2-氨基-4-(羟甲基氧膦基) - 丁酸的方法,其特征在于,使用下式(2)表示的铑催化剂对脱氢氨基酸进行不对称氢化, 光学活性环膦配体,然后使所得产物水解:[Rh(R 4)(L)] X(2)[其中R 4表示1,5-环辛二烯或降冰片素; L表示由下式(6)表示的物质:(其中,R 5和R 8分别表示C 1-4烷基; R 6和R 7分别表示氢原子或羟基,Y表示选自下述 式(7):(Me表示甲基))。