申请人:Huels Aktiengesellschaft
公开号:US05932747A1
公开(公告)日:1999-08-03
A method for preparing 1,3-dioxane compounds of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2, independently of one another, represent hydrogen or a hydrocarbon radical; and X.sup.1 and X.sup.2, independently of one another, represent an electronegative groups, which method entails reacting a bis(hydroxymethyl) compound of the formula (II): ##STR2## in which X.sup.1 and X.sup.2 each, independently of one another, are as defined above, with an orthocarboxylic acid ester of the formula R.sup.4 --C(OR.sup.5).sub.3 (III), in which R.sup.4 represents hydrogen or a hydrocarbon radical and R.sup.5 represents a hydrocarbon radical, and with an aldehyde or ketone of the formula R.sup.1 --CO--R.sup.2 (IV), in which R and R each, independently of one another, are as defined above.
一种制备式(I)的1,3-二噁烷化合物的方法:其中R1和R2分别独立地表示氢或烃基; X1和X2分别独立地表示电负基团,该方法包括将式(II)的双(羟甲基)化合物反应:其中X1和X2各自独立地如上定义,与式R4-C(OR5)3(III)的正甲酸酯反应,其中R4表示氢或烃基,R5表示烃基,以及式R1-CO-R2(IV)的醛或酮反应,其中R1和R2各自独立地如上定义。