Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Börries Kübel and Gerhard Höfle and Wolfgang Steglich,Hetero Cope Rearrangements in the Cyclization of Allyl and Propargyl Esters of N‐Acyl Amino Acids to Oxazolin‐5‐ones,Angewandte Chemie International Edition in English,0570-0833,Wiley,1975-01,14,1,58-59,https://cir.nii.ac.jp/crid/1363670320399158528,https://doi.org/10.1002/anie.197500581