申请人:BASF Aktiengesellschaft
公开号:US05229530A1
公开(公告)日:1993-07-20
A process for the preparation of a 2,3-dihydrobenzofuran I ##STR1## or a derivative thereof, where R.sup.a and R.sup.b are C-organic radicals, involves reacting a 2-hydroxybenzyl alcohol II ##STR2## in the presence of an acidic ion exchanger resin and in the presence of an inert dehydrating substance. Novel 2,3-dihydrobenzofurans Ia, 2-acylphenols IVa and 2-hydrox-ybenzyl alcohols IIa, a process for their preparation, and their use as intermediates are also described.
一种制备2,3-二氢苯并呋喃I ##STR1## 或其衍生物的方法,其中R.sup.a和R.sup.b为C-有机基团,涉及在酸性离子交换树脂和惰性脱水物的存在下反应2-羟基苯甲醇II ##STR2##。还描述了新型的2,3-二氢苯并呋喃Ia,2-酰基苯酚IVa和2-羟基苯甲醇IIa的制备方法,以及它们作为中间体的用途。