申请人:Dzwiniel Trevor
公开号:US20070100146A1
公开(公告)日:2007-05-03
The present invention is a method for preparing a compound of the formula
wherein R is hydrogen, C
1
to C
6
alkyl, C
1
to C
6
alkoxy or halo, R
1
and R
2
are independently hydrogen, C
1
to C
10
alkyl, C
1
to C
10
alkoxy, C
3
to C
10
cycloalkyl, C
3
to C
10
alkenyl, C
5
to C
10
cycloalkenyl, C
2
to C
10
alkynyl, C
6
to C
20
aryl or substituted C
6
to C
20
aryl and n is the integer 1 or 2 by reacting the corresponding N-oxide with an aqueous solution of ammonia and a C
1
to C
6
alkyl, C
6
to C
20
aryl or substituted C
6
to C
20
aryl chloroformate thereby forming said compound formula (1).
本发明提供了一种制备式(1)化合物的方法,其中R为氢、C1至C6烷基、C1至C6烷氧基或卤素,R1和R2独立地为氢、C1至C10烷基、C1至C10烷氧基、C3至C10环烷基、C3至C10烯基、C5至C10环烯基、C2至C10炔基、C6至C20芳基或取代的C6至C20芳基,n为整数1或2,通过将相应的N-氧化物与氨水和C1至C6烷基、C6至C20芳基或取代的C6至C20芳基氯甲酸酯的水溶液反应,从而形成所述化合物式(1)。