Benzyne inserts into one of the C-O bonds of styrene -oxide to form a dihydrobenzofuran as the major product together with five other reaction products. A detailed study of the reaction mixture clarified an intriguing forty-year-old personal communication from Stiles and Haag.
Benzyne 插入到氧化苯乙烯的 CO 键之一中,与其他五种反应产物一起形成二氢苯并呋喃作为主要产物。对反应混合物的详细研究澄清了来自 Stiles 和 Haag 的有趣的 40 年前个人交流。
A mild method for generation of o-quinone methides under basic conditions. The facile synthesis of trans-2,3-dihydrobenzofurans
A novel and efficient method for the generation of o-quinone methide intermediates was developed from the readily available 2-tosylalkylphenols under the mildbasicconditions, and their reactions with sulfur ylides were investigated for the stereoselective synthesis of trans-2,3-dihydrobenzofurans.