申请人:Societe Nationale des Poudres et Explosifs
公开号:US04808743A1
公开(公告)日:1989-02-28
Vinyl chloroformates are described of formula ##STR1## in which: R.sub.1 .dbd.R.sub.2 .dbd.Cl, Br or a saturated 1-4 carbon atom alkyl or together they form a cycloaliphatic ring of 4-8 carbon atoms; R.sub.3 .dbd.H when R.sup.1 or R.sup.2 .dbd.alkyl; saturated alkyl of 1-4 carbon atoms or aryl; ##STR2## in which R.sub.4 .dbd.R.sub.5 .dbd.alkyl of 1-4 carbon atoms or R.sub.3 forms with R.sub.2 a C.sub.5 -C.sub.8 ring which may have attached oxygen atoms. The process of preparation consists of reacting phosgene with the corresponding compounds containing alpha halogen and a carbonyl group. The products are very useful to obtain vinyl carbonates and carbamates.
乙烯氯甲酸酯的化学式描述为##STR1##其中:R.sub.1 .dbd.R.sub.2 .dbd.Cl、Br或饱和的1-4个碳原子的烷基,或它们一起形成4-8个碳原子的环脂环;当R.sup.1或R.sup.2 .dbd.烷基时,R.sub.3 .dbd.H;饱和的1-4个碳原子的烷基或芳基;##STR2##其中R.sub.4 .dbd.R.sub.5 .dbd.1-4个碳原子的烷基或R.sub.3与R.sub.2形成可能附有氧原子的C.sub.5 -C.sub.8环。制备过程包括将光气与含有α卤素和羰基的相应化合物反应。这些产品非常有用,可用于获得乙烯碳酸酯和氨基甲酸酯。