Base-catalyzed reactions of benzanthrene with “vinamidinium salts” (2a-c ) followed by thermal electrocyclic ring closure are regiospecific affording only benzo [e] pyrene derivatives, contrary to previous claims.
与先前的权利要求相反,苯并
蒽与“
乙烯基ami盐”(2a-c)的碱催化反应,随后进行热电环闭合是区域特异性的,仅提供苯并[e] pyr衍
生物。