Photochemische addition konjugierter diene an tricarbonyl-η-1,3,5-cycloheptatrien-chrom(0) ☆

Photochemische addition konjugierter diene an tricarbonyl-η-1,3,5-cycloheptatrien-chrom(0) ☆
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光化学加成 konjugierter diene an tricarbonyl-η-1,3,5-cycloheptatrien-chrom(0) ☆

DOI:
10.1016/s0022-328x(00)91205-1
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发表时间:
1978
影响因子:
2.3
通讯作者:
C. G. Kreiter
C. G. Kreiter
中科院分区:
化学3区
文献类型:
--
作者:
S. Özkar;H. Kurz;D. Neugebauer;C. G. Kreiter

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共轭二烯,例如1,3-丁二烯或反,反-2,4-己二烯,在263 K下,在正戊烷中用紫外光照射时与三羰基-η-1,3,5-环庚三烯铬(0)(I)进行[4s + 6s]环加成,并生成鲜红的三羰基-η-双环[4.4.1]十一碳-1,3,7-三烯铬(O)配合物Cr(CO)3C 11 H14(II)和Cr(CO)3C 13 H18(III)以高产率形成。通过IR、NMR和质谱确定了II和III的结构,并通过对III的X射线结构分析证实了其结构。
Conjugated dienes, e.g. 1,3-butadiene or trans, trans-2,4-hexadiene, undergo [4s + 6s] cycloaddition with tricarbonyl-η-1,3,5-cycloheptatrienechromium(0) (I) on irradiation with UV light in n-pentane at 263 K, and the bright red tricarbonyl-η-bicyclo[4.4.1]undeca-1,3,7-trienechromium(O) complexes Cr(CO)3C11H14 (II) and Cr(CO)3C13H18 (III) are formed in high yields. The structures of II and III were determined by IR, NMR and mass spectra and confirmed by an X-ray structure analysis for III.