The present invention relates to a process for the preparation of compounds of Formula (I), wherein R
1
is 1,3-dimethyl-butyl, 1,3,3-trimethyl-butyl or a group A
1
, wherein R
3
, R
4
and R
5
are each independently of the others hydrogen or C
1
-C
4
alkyl; and R
2
is hydrogen; or R
1
and R
2
together from the group A
2
, wherein R
6
, and R7 are each independently of the other hydrogen or C
1
-C
4
alkyl; or R
1
and R
2
together from the group A
3
, wherein R
5
and R
9
are each independently of the other hydrogen or C
1
-C
4
alkyl; wherein a compound of Formula (II) wherein R
1
and R
2
are as defined for formula I and X is bromine or chlorine, is reacted with ammonia in the presence of a base and a catalytic amount of at least one palladium complex compound, wherein the palladium complex compound comprises at least one ferrocenyl-biphosphine ligand.
本发明涉及一种制备式(I)化合物的方法,其中R1为1,3-二
甲基丁基、1,3,3-三
甲基丁基或A1基团,其中R3、R4和R5各自独立地为
氢或C1-C4烷基;R2为
氢;或者R1和R2一起形成A2基团,其中R6和R7各自独立地为
氢或C1-C4烷基;或者R1和R2一起形成A3基团,其中R5和R9各自独立地为
氢或C1-C4烷基;其中化合物式(II)其中R1和R2如式(I)所定义,X为
溴或
氯,在碱和至少一种
钯配合物
催化剂的存在下与
氨反应,其中
钯配合物包括至少一种
二茂铁双
膦配体。