申请人:ICI Americas Inc.
公开号:US04563525A1
公开(公告)日:1986-01-07
Compounds of the formula (I): ##STR1## wherein R.sup.4 is hydrogen, D is oxygen or NR.sup.6, R.sup.1, R.sup.3, R.sup.6, R.sup.7 and R.sup.8 have defined values, and n is 1 or 2 are produced by internally cyclizing a compound of the formula (XV): ##STR2## wherein R.sup.19 is a value of R.sup.1 or hydrogen and, if R.sup.19 is hydrogen, reacting the cyclization product with R.sup.1 --Br and a weak base such as potassium carbonate.
公式(I)的化合物:##STR1## 其中R.sup.4是氢,D是氧或NR.sup.6,R.sup.1,R.sup.3,R.sup.6,R.sup.7和R.sup.8具有定义的值,n为1或2,通过内部环化化合物的方法制备(XV)的化合物:##STR2## 其中R.sup.19是R.sup.1或氢的值,如果R.sup.19是氢,则将环化产物与R.sup.1-Br和弱碱(如碳酸钾)反应。