申请人:——
公开号:US20030032807A1
公开(公告)日:2003-02-13
The invention relates to a novel process for preparing 1-amino-3-aryluracils of the formula (I)
1
in which
R
1
is optionally substituted alkyl,
R
2
is hydrogen, nitro, cyano, halogen or optionally substituted alkyl,
R
3
is hydrogen, nitro, cyano or halogen,
R
4
is hydrogen, nitro, cyano, carbamoyl, thiocarbamoyl, hydroxyl or halogen, or optionally substituted alkyl, alkoxy or benzoyloxy,
R
5
is hydrogen, hydroxyl, mercapto, amino, hydroxyamino, nitro, cyano, carboxyl, carbamoyl, thiocarbamoyl or halogen, or is one of the following moieties
—R
6
, —Q—R
6
, —NH—R
6
, —NH—O—R
6
, —NH—SO
2
—R
6
, —N(SO
2
R
6
)
2
, —CQ
1
—R
7
, —CQ
1
—Q
2
—R
6
, —CQ
1
—NH—R
6
, —Q
2
—CQ
1
—R
6
, —Q
2
—CQ
1
—Q
2
—R
6
, —NH—CQ
1
—R, —N(SO
2
—R
6
)—(CQ
1
—R
6
), —NH—CQ
1
—Q
2
—R
6
, —Q
2
—CQ
1
—NH—R
6
where
Q is O, S, SO or SO
2
, p2 Q
1
and Q
2
are independently O or S, and
R
6
is alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkylalkyl, aryl, arylalkyl, heterocyclyl or heterocyclylalkyl, each of which is optionally substituted.
该发明涉及一种制备式(I)的1-氨基-3-芳基尿嘧啶的新工艺,其中R1是可选择取代的烷基,R2是氢、硝基、氰基、卤素或可选择取代的烷基,R3是氢、硝基、氰基或卤素,R4是氢、硝基、氰基、氨基甲酰基、硫代氨基甲酰基、羟基或卤素,或可选择取代的烷基、烷氧基或苯甲氧基,R5是氢、羟基、巯基、氨基、羟基氨基、硝基、氰基、羧基、氨基甲酰基、硫代氨基甲酰基或卤素,或是以下基团之一:R6、—Q—R6、—NH—R6、—NH—O—R6、—NH—SO2—R6、—N(SO2R6)2、—CQ1—R7、—CQ1—Q2—R6、—CQ1—NH—R6、—Q2—CQ1—R6、—Q2—CQ1—Q2—R6、—NH—CQ1—R、—N(SO2—R6)—(CQ1—R6)、—NH—CQ1—Q2—R6、—Q2—CQ1—NH—R6,其中Q是O、S、SO或SO2,Q1和Q2独立地为O或S,R6是烷基、烯基、炔基、环烷基、环烷基烷基、芳基、芳基烷基、杂环烷基或杂环烷基烷基,每种均可选择取代。