A general and versatile synthetic approach to a broad series of aromatic triynes as precursors to helicene derivatives has been developed. Employing a set of simple tools, triynes comprising the (phenylethynyl)benzene, 1-(phenylethynyl)naphthalene, and 1-(1-naphthylethynyl)- naphthalene moiety have been prepared in good to excellent yields throughout the whole reaction sequence. The methodology allows constructing various types of a junction between the central diarylacetylene moiety and the attached acetylene units to get the target triynes of general formula R-C≡C-CH2-X-CH2-Ar-C≡C-Ar'-CH2-X-CH2-C≡C-R or R-C≡C-CH2CH2-Ar-C≡C-Ar'-CH2CH2-C≡C-R (R = H, CH3, TMS, or TIPS; X = O, NTs, or C(CO2CH3)2; Ar/Ar' = 2-phenylene or 2-naphthylene).
已经开发出一种通用且多功能的合成方法,用于制备芳香三炔作为螺环衍生物的前体。利用一组简单的工具,在整个反应序列中成功制备了包含苯基乙炔基苯、1-(苯基乙炔基)萘和1-(1-萘基乙炔基)-萘基的三炔,收率良好至优良。该方法允许在中心二芳基乙炔基和附加的乙炔单元之间构建各种类型的连接点,以获得通用公式 R-C≡C-CH2-X-CH2-Ar-C≡C-Ar'-CH2-X-CH2-C≡C-R 或 R-C≡C-CH2CH2-Ar-C≡C-Ar'-CH2CH2-C≡C-R(R = H、CH3、TMS 或 TIPS;X = O、NTs 或 C(CO2CH3)2;Ar/Ar' = 2-苯基或2-萘基)。