申请人:Asta Medica Aktiengesellschaft
公开号:US20010047103A1
公开(公告)日:2001-11-29
A process for the preparation of oxazaphosphorine-2-amines of the formula (I) described by the reaction scheme
1
in which R
1
is H, 2-bromoethyl, 2-chloroethyl, 2-hydroxyethyl, 2-mesyloxyethyl or 1-phenylethyl; R
2
is H or 2-chloroethyl; R
3
is H, 2-bromoethyl, 2-chloroethyl or 1-phenylethyl; and R
4
is H; or R
1
and R
2
, and also R
3
and R
4
, together with the linked N atom, form an aziridide ring, where R
1
, R
2
and R
3
are not simultaneously H, and R
1
and R
3
are not simultaneously 1-phenylethyl; and Y, which is optionally present, is hydrogen chloride or hydrogen bromide. The reaction is carried out in a single vessel with phosphoryl chloride and an auxiliary base as an acid-binding agent with minimization of the effect of water and without isolation of an intermediate compound.
一种制备式(I)的氧杂磷酰胺的方法,反应方程式1描述了该方法,其中R1为H、2-溴乙基、2-氯乙基、2-羟乙基、2-甲磺氧基乙基或1-苯乙基;R2为H或2-氯乙基;R3为H、2-溴乙基、2-氯乙基或1-苯乙基;R4为H;或者R1和R2,以及R3和R4与连接的N原子一起形成一个环氮杂环,其中R1、R2和R3不同时为H,且R1和R3不同时为1-苯乙基;Y是可选的,可以是氢氯酸或氢溴酸。该反应在单个容器中进行,使用磷酰氯和辅助碱作为酸中和剂,最小化水的影响,无需分离中间产物。