申请人:——
公开号:US20030028045A1
公开(公告)日:2003-02-06
A process for preparing chlorocarbonyl chlorides of the formula (I)
1
in which
R
1
and R
2
independently of one another
are a hydrogen atom, a carbon-containing organic radical, a halogen, a nitro or a cyano group,
and Y
is an alkylene chain having 1 to 10 carbon atoms in the chain, which is unsubstituted or substituted by carbon-containing organic radicals, halogen, nitro and/or cyano groups, where the alkylene chain may be interrupted by an ether, a thioether, a tertiary amino or a keto group,
where the carbon-containing organic radicals of Y and/or R
1
and/or R
2
may be attached to one another forming a nonaromatic system, by reacting a lactone of the formula (II)
2
in which R
1
, R
2
and Y are as defined above, with hydrogen chloride and phosgene in the presence of a catalyst, which comprises introducing hydrogen chloride before and/or during the addition of phosgene, where the introduction of hydrogen chloride is started only when a temperature of at least 60° C. has been reached and a pyridine compound is used as catalyst is described.
一种制备式(I)1中的氯羰基氯化物的方法,其中R1和R2独立地是氢原子、含碳有机基团、卤素、硝基或氰基,Y是具有1至10个碳原子的烷基链,该链未被取代或被含碳有机基团、卤素、硝基和/或氰基取代,其中烷基链可能被醚、硫醚、三级胺或酮基中断,Y和/或R1和/或R2的含碳有机基团可以附加在一起形成非芳香族系统,通过在催化剂的存在下将式(II)2中的内酯与氯化氢和光气反应来实现,其中R1、R2和Y如上所定义,催化剂包括在加入光气之前和/或期间引入氯化氢,引入氯化氢仅在温度达到至少60℃时开始,并使用吡啶化合物作为催化剂。