Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Carbonylative Cyclization of Unsaturated Carboxylic Acids by Palladium Complexes with Phosphines(I) Synthesis and Structure of Palladium(O, II) Complexes with Unsaturated Carboxylic Acids

포스핀류가 배위된 팔라듐 착물에 의한 불포화카르복실산의 카르보닐화고리 반응 (제 1 보). 불포화카르복실산이 배위된 팔라듐(0, Ⅱ) 착물의 합성과 구조

  • Myung-Ki Doh (Department of Chemistry, Yeungnam University) ;
  • Maeng-Jun Jung (Department of Chemistry, Yeungnam University) ;
  • Dong-Jin Lee (Department of Industrial Chemistry, Kyungbuk Sanup University) ;
  • Kohtaro Osakada (Research Laboratory of Resources Utilization, Tokyo Institute of Technology) ;
  • Akio Yamamoto (Deppartment of Applied Chemistry, Shool of Science and Engineering. Waseda University)
  • 도명기 (영남대학교 이과대학 화학과) ;
  • 정맹준 (영남대학교 이과대학 화학과) ;
  • 이동진 (경북산업대학교 공업화학과) ;
  • ;
  • Published : 1993.04.20
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Abstract

New Palladium(0)-olefin complexes, $(PMe_3)_2Pd{CH_2=C(CH_3)COOH} \;and\;(PMe_3)_2Pd{(CH_3)CH=CHCOOH}$ have been prepared by treating $Pd(PMe_3)_2$(styrene) with methacrylic acid and trans-crotonic acid, respectively. These complexes were characterized by elemental analysis, IR and $^1H-,\;^{13}C-,\;and\;^{31}P$-NMR spectroscopy. The carboxylic acid entity was found non-bonded with palladium while ${\pi}$-bond is formed between the olefin double bond and Pd(0). The results are compared with the metallacycle formation the reaction of Pd(PMe3)2(styrene) with 3-butenoic acid.

$trans-PdEt_2(PMe_3)_2$와 styrene을 반응시켜 얻어진 $Pd(PMe_3)_2$(styrene)에 methacrylic acid와 trans-crotonic acid를 각각 반응시켜 새로운 팔라듐(O)-올레핀착물로서 $(PMe_3)_2Pd{CH_2=C(CH_3)COOH}$와 (PMe_3)_2Pd{(CH_3)CH=CHCOOH}$를 합성하고, 구조와 특성을 원소분석, IR 및 $^1H-,\;^{13}C-,\;^{31}P-NMR$ 등의 분광학적 방법으로 조사하였다. methacrylic acid 와 trans-crotonic acid에 존재하는 올레핀의 이중결합은 팔라듐(O)에 ${\pi}$-결합을 형성하였고, 카르복실산은 팔라듐에 결합되지 않았음을 알게되었다. 그리고 동일한 반응에서 metallacycle을 형성하는 3-butenoic acid와 비교 검토하였다.

Keywords

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