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    • 2. 发明申请
    • PROCESS FOR THE PREPARATION OF 7-SUBSTITUTED 3-ALKYL-3H-ISOBENZOFURAN-1-ONE DERIVATIVES
    • 制备3-取代的3-烷基-3H-异苯并呋喃-1-酮衍生物的方法
    • WO02094760A3
    • 2003-10-02
    • PCT/EP0205572
    • 2002-05-21
    • SYNGENTA PARTICIPATIONS AGSCHNYDER ANITAPASSAFARO MARCORAPOLD THOMAS
    • SCHNYDER ANITAPASSAFARO MARCORAPOLD THOMAS
    • C07B61/00C07C51/10C07C63/70C07C245/08C07D307/88C07C63/06A01N43/54C07C43/225C07C65/24C07C317/22C07D405/12
    • C07D307/88C07C63/70
    • Process for the preparation of compounds of formula (I) wherein R is halogen, R1O1R1S(O)n or (R1)2NC(X)O; R1 is C1-C8alkly, aryl-C1-C8alkyl, C1-C8haloalkyl or aryl; n is 0, 1, 2 or 3; X is O or S; and R2 is hydrogen, C1-C4alkyl or C1-C4haloalkyl, in which process, in a solvent, (1) an aniline derivative of formula (IV) wherein R is as defined above, and R3 is C1-C5alkyl or C1-C5haloalkyl, is diazotised in the presence of a mineral acid to form the corresponding diazonium salt of formula (II) wherein R and R3 are as defined above, A is an anion, and m is 1 or 2, (2) the resulting diazonium salt of formula (II) is carbonylated in the presence of a catalyst, CO and optionally a buffer, to form a benzoic acid derivative of formula (III) wherein R and R3 are as defined above, and (3) the benzoic acid derivative of formula (III) is then subjected to benzylic lactonisation in the ortho-position alkyl chain R3 in the presence of a free-radical initiator and a halogenating agent.
    • 制备式(I)化合物的方法,其中R是卤素,R1O1R1S(O)n或(R1)2NC(X)O; R 1是C 1 -C 8烷基,芳基-C 1 -C 8烷基,C 1 -C 8卤代烷基或芳基; n为0,1,2或3; X是O或S; 并且R 2是氢,C 1 -C 4烷基或C 1 -C 4卤代烷基,其中在溶剂中,(1)式(Ⅳ)的苯胺衍生物,其中R如上所定义,R 3是C 1 -C 5烷基或C 1 -C 5卤代烷基, 在无机酸存在下重氮化形成相应的式(II)的重氮盐,其中R和R 3如上定义,A m是阴离子,m是1或2,(2)所得的 式(II)的重氮盐在催化剂CO和任选的缓冲剂的存在下羰基化,以形成其中R和R 3如上所定义的式(III)的苯甲酸衍生物,和(3)苯甲酸衍生物 的式(III)化合物在自由基引发剂和卤化剂的存在下在邻位烷基链R3中进行苄基内酯化。
    • 3. 发明申请
    • PROCESS FOR THE PREPARATION OF 7-SUBSTITUTED 3-ALKYL-3H-ISOBENZOFURAN-1-ONE DERIVATIVES
    • 制备3-取代的3-烷基-3H-异苯并呋喃-1-酮衍生物的方法
    • WO2002094760A2
    • 2002-11-28
    • PCT/EP2002/005572
    • 2002-05-21
    • SYNGENTA PARTICIPATIONS AGSCHNYDER, AnitaPASSAFARO, MarcoRAPOLD, Thomas
    • SCHNYDER, AnitaPASSAFARO, MarcoRAPOLD, Thomas
    • C07C63/06
    • C07D307/88C07C63/70
    • Process for the preparation of compounds of formula (I) wherein R is halogen, R 1 O 1 R 1 S(O) n or (R 1 ) 2 NC(X)O; R 1 is C 1 -C 8 alkly, aryl-C 1 -C 8 alkyl, C 1 -C 8 haloalkyl or aryl; n is 0, 1, 2 or 3; X is O or S; and R 2 is hydrogen, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl, in which process, in a solvent, (1) an aniline derivative of formula (IV) wherein R is as defined above, and R 3 is C 1 -C 5 alkyl or C 1 -C 5 haloalkyl, is diazotised in the presence of a mineral acid to form the corresponding diazonium salt of formul (II) wherein R and R 3 are as defined above, A m- is an anion, and m is 1 or 2, (2) the resulting diazonium salt of formula (II) is carbonylated in the presence of a catalyst, CO and optionally a buffer, to form a benzoic acid derivative of formula (III) wherein R and R 3 are as defined above, and (3) the benzoic acid derivative of formula (III) is then subjected to benzylic lactonisation in the ortho-position alkyl chain R 3 in the presence of a free-radical initiator and a halogenating agent.
    • 制备式(I)化合物的方法,其中R是卤素,R1O1R1S(O)n或(R1)2NC(X)O; R 1是C 1 -C 8烷基,芳基-C 1 -C 8烷基,C 1 -C 8卤代烷基或芳基; n为0,1,2或3; X是O或S; 并且R 2是氢,C 1 -C 4烷基或C 1 -C 4卤代烷基,其中在溶剂中,(1)式(Ⅳ)的苯胺衍生物,其中R如上所定义,R 3是C 1 -C 5烷基或C 1 -C 5卤代烷基, 在无机酸存在下重氮化形成相应的配方(II)的重氮盐,其中R和R 3如上所定义,A m是阴离子,m是1或2,(2)所得的 式(II)的重氮盐在催化剂CO和任选的缓冲剂的存在下羰基化,以形成其中R和R 3如上所定义的式(III)的苯甲酸衍生物,和(3)苯甲酸衍生物 的式(III)化合物在自由基引发剂和卤化剂的存在下在邻位烷基链R3中进行苄基内酯化。