Crystalline-State Photoisomerization of α,β-Unsaturated Thioamide Analyzed by X-rays

• Takaaki Hosoya

• Takashi Ohhara

• Hidehiro Uekusa

書誌事項

タイトル別名

• Crystalline State Photoisomerization of アルファ ベータ Unsaturated Thioamide Analyzed by X rays

抄録

When a crystal of N,N-dibenzyl-1-cyclohexenecarbothioamide was exposed to UV light at 263 K, the cell dimensions were gradually changed with retention of the single crystal form. Since the crystal gradually decomposed after 330 h, the irradiation was stopped and the structure was analyzed by X-rays. The thioamide molecule was converted by 65.0% to the thiolactam molecule. The thioamide and thiolactam molecules were observed as a disordered structure in the crystal. The disordered structure clearly indicates that the hydrogen atom of one of the benzyl groups is extracted by one of the olefin carbon atoms of the cyclohexenyl group and that the benzyl carbon atom makes a bond with another olefin carbon to form a thiolactam ring. The mechanism of the ring formation and the chirality of the produced thiolactam are well explained from the reaction cavity.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 75 (10), 2147-2151, 2002

  Tokyo : Chemical Society of Japan

キーワード

• General Chemistry

詳細情報

• CRID: 1522262180196159360
• NII論文ID: 10010677612
• NII書誌ID: AA00580132
• ISSN: 00092673
• ISSN: 13480634
• DOI: 10.1246/bcsj.75.2147
• NDL書誌ID: 6450900
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6450900
• Web Site: https://academic.oup.com/bcsj/article-pdf/75/10/2147/56201760/bcsj.75.2147.pdf
• 本文言語コード: en
• NDL 雑誌分類:
  • ZP1(科学技術--化学・化学工業)
• データソース種別:
  • NDL
  • Crossref
  • CiNii Articles