Processes of preparing asymmetric dinitrobenzamide mustard compounds, intermediate compounds useful therein and products obtained therefrom
申请人:Atwell Graham John
公开号:US20100121091A1
公开(公告)日:2010-05-13
The invention relates to methods of preparing compounds of formula (II) wherein Z represents —OR
1
or N(R
2
)R
2a
—, where R
1
is lower alkylene (C
1
-C
6
), R
2
is lower alkyl or H and R
2a
is lower alkylene (C
1
-C
6
) or H; Q is absent when R
2a
is H and is otherwise selected from the group consisting of H, —OH and protected forms of —OH; one of X and Y is halogen and the other is —OSO
2
R
3
, where R
3
is selected from the group consisting of lower alkyl (C
1
-C
6
), phenyl and CH
2
phenyl. The method comprises the steps of: (a) reacting a compound of formula (I) with aziridineethanol or a 2-[(2-haloethyl)amino]ethanol in the presence of a metal halide, to form a compound of the formula (III) wherein one of X and E is halogen and the other is hydroxy, and (b) reacting the compound of formula (III) with an alkyl- or arylsulfonyl halide or alkyl- or arylsulfonyl anhydride to obtain a compound of the formula (II). The invention also relates to methods of preparing compounds of formula (IV) from the compounds of formula (II) so obtained, and to novel compounds of formula (IIb) useful as intermediates in these methods.
本发明涉及制备式(II)化合物的方法,其中Z代表—OR1或N(R2)R2a—,其中R1为低碳链(C1-C6),R2为低碳基或H,R2a为低碳链(C1-C6)或H;当R2a为H时,Q不存在,否则Q选择自羟基(—OH)和保护的羟基形式;X和Y中的一个是卤素,另一个是—OSO2R3,其中R3选择自低碳基(C1-C6)、苯基和CH2苯基。该方法包括以下步骤:(a)在金属卤化物的存在下,将式(I)化合物与环氧丙胺乙醇或2-[(2-卤基乙基)氨基]乙醇反应,形成式(III)化合物,其中X和E中的一个是卤素,另一个是羟基,(b)将式(III)化合物与烷基或芳基磺酰卤或烷基或芳基磺酰酐反应,得到式(II)化合物。本发明还涉及从所得到的式(II)化合物制备式(IV)化合物的方法,以及作为这些方法中间体的新型式(IIb)化合物。