3-alkenyloxy-5-irydroxybenzoic and the corresponding 3-alkenyloxy-5-methoxybenzoic acid derivatives 1 – 4 in the presence of small quantities of H2SO4 produces highly functionalized alkyloxyenones 6 – 8 in good or moderate yields. The products are explained via an acid catalyzed transformation of the primary [2+2] photocycloadducts.
3-烯-5- irydroxybenzoic和相应的3-链烯基氧基-5-
甲氧基苯甲酸衍
生物的照射4 - 1少量的H的存在2 SO 4生成高度官能alkyloxyenones 6 - 8良好或中等产率。通过伯[2 + 2]光环加合物的酸催化转化来解释产物。