Benzofurans of the formula I ##STR1## and their salts in which R.sup.1, R.sup.2 and X have the meanings indicated in claim 1, are suitable as intermediates in the synthesis of medicaments and show effects on the central nervous system.
式I中,若R.sup.1、R.sup.2和X的含义如权利要求书1所示,则I的
苯并呋喃衍
生物及其盐,适用于合成药物的中间体,并对中枢神经系统具有作用。