Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Masaya Okano and Toyonari Sugimoto and Yasuo Matsumura and Shigeo Tanimoto,"A Facile preparation of aromatic carboxylic acid esters by the reaction of 1,3-butadienylamine and 1,3-tubadienyl ether with aceetylene carboxylic acid esters",Tetrahedron Letters,0040-4039,Elsevier BV,1977-01-01,18,,2899-2902,https://cir.nii.ac.jp/crid/1871428067449089408,https://doi.org/10.1016/s0040-4039(01)83105-1