Synthesis and photoreaction of polymethylenediamine bis(4-methyl-7-coumarinyl)oxyacetic amides

• 作 者: 杜大明 周灵萍 王永梅 孟继本
• 机 构: Department of Chemistry,Shandong University,Jinan,Shandong 250100,China ,Department of Chemistry,Sha
• 出 处: Chinese Journal of Chemistry
• 发表日期: 1998年05期
• 关键词: intramolecular photochemical sulfoxide coumarin dimer substituted intermolecular

A series of polymethylenediamine bis(4-methyl-7-coumarinyl)oxyacetic amides have been synthesized and their intramolecular photochemical cyclodimerizations have been investigated It was found that only syn-HT configuration products were obtained when these bisamides were directly irradiated in dimethyl sulfoxide solution and the yields of the products decreased with the intrease of the chain length.The structures of long chain amides and their intramolecular photoryrlizatum products were determined by IR,MS,1H NMR and elemental analysis.