申请人:The Upjohn Company
公开号:US04010209A1
公开(公告)日:1977-03-01
A process is described for the preparation of phospholene-1-oxides and 1-sulfides having an aliphatic substituent in the 1-position, a double bond at the 2- or 3-positions and, optionally, having additional substituents at one or more of positions 2, 3, 4 or 5. The process comprises the reaction of a 1-(2-chloroalkoxy)-phospholene with the appropriate aliphatic alcohol or thiol optionally in the presence of an alkylation catalyst. Use of an aliphatic alcohol gives rise to a phospholene oxide while use of the corresponding thiol gives rise to a phospholene sulfide. The phospholene-1-oxides and 1-sulfides so obtained are useful as catalysts for the conversion of isocyanates to carbodiimides.
描述了一种制备磷环-1-氧化物和1-硫化物的过程,其在1位具有脂肪族取代基,在2位或3位有双键,并且在2、3、4或5位置之一或多个位置上可以有额外的取代基。该过程包括将1-(2-氯烷氧基)-磷环与适当的脂肪族醇或硫醇反应,可选地在烷基化催化剂的存在下进行。使用脂肪族醇会产生磷环氧化物,而使用相应的硫醇会产生磷环硫化物。所得的磷环-1-氧化物和1-硫化物可用作将异氰酸酯转化为碳二亚胺的催化剂。