申请人:Aventis CropScience GmbH
公开号:US07026477B1
公开(公告)日:2006-04-11
The invention relates to a preparation process for a compound (I) or a salt thereof,
in which Q, X*, Y, Z, R, R1, R2 and R3 are as defined in claim 1,
which comprises
a) ammonolyzing a comp. (II) in which Hal=halogen atom to give (III), pref.
(a1) carrying out the reaction in an organic solvent mixture (org. solv. mixture) comprising (1) opt. halogenated aromatic hydrocarbons and (2) polar aprotic solvents, in a weight ratio of solv. (1): solv. (2) of 20:1 to 1:1,
(b) phosgenating the comp. (III) with phenylsulfonyl isocyanate of the formula (IV), pref.
(b1) in the case X*=halogen, carrying out the reaction with phosgene in an org. solv. in the presence of isocyanates R′-NCO as catalyst, where R′=(subst.) hydrocarbon, with or without addition of an amine base,
(c) reacting the resulting compound (IV) in org. solv. with the aminoheterocycle H2N-Het (Het=heterocycle as in (I)) to give the comp. (I) or a salt thereof, pref.
(c1) carrying out the reaction in a solv. mixture of opt. halogenated arom. hydrocarbon having a b.p. of more than 110° C. and a polar aprotic solv., where at least one of the preferred partial steps (a1) to (c1) is carried out in the process.
本发明涉及一种化合物(I)或其盐的制备方法,其中Q、X*、Y、Z、R、R1、R2和R3如权利要求1所定义,包括a)用氨解反应将化合物(II)氨解成(III),优选地(a1)在有机溶剂混合物(有机溶剂混合物)中进行反应,所述有机溶剂混合物包括(1)可选的卤代芳烃和(2)极性无水溶剂,其重量比为溶剂(1):溶剂(2)=20:1至1:1;b)用公式(IV)的苯基磺酰异氰酸酯与化合物(III)进行光气化反应,优选地(b1)在X*=卤素的情况下,在有机溶剂中在异氰酸酯R'-NCO的催化下加入光气,其中R'=(替代)烃基,可以加入胺碱,c)在有机溶剂中用氨杂环H2N-Het (Het=如(I)中所述的杂环)与所得化合物(IV)反应,得到化合物(I)或其盐,优选地(c1)在沸点大于110℃的可选卤代芳烃和极性无水溶剂的混合物中进行反应,其中至少进行了优选的部分步骤(a1)至(c1)之一。