有机亚碘酰化合物的研究(Ⅰ)——烷基的位阻效应对邻正烷基亚碘酰苯稳定性的影响  

Study on Organo-Iodoso Compounds(Ⅰ)——The Steric Effect of Ortho-n-Alkyl Group on the Stability of Ortho-n-Alkyl Iodosobenzene

作　　者：朱申杰[1] 张春豪[1] Zhu Shenjie;Zhang Chunhao(Department of Chemistry,Nankai University,Tianjin)

机构地区：[1]南开大学化学系

出　　处：《高等学校化学学报》1986年第3期233-238,共6页Chemical Journal of Chinese Universities

基　　金：中国科学院科学基金资助的课题.

摘　　要：通过一系列邻正烷基亚碘酰苯的合成试验,发现其稳定性随烷基碳链增长而降低,从红外光谱和核磁共振谱的结构分析表明:邻位长链烷基取代的亚碘酰苯的不稳定性是由于邻位烷基对生成稳定聚合态桥状结构的位阻效应所引起的。A scries of ortho-n-alkyl iodosobenzenes were synthesized from the corresponding n-alkyl iodobenzenes. Under the same conditions,it was found that with increasing in the carbon chain length of n-alkyl group, the formation of the corresponding ortho-n-alkyl iodosobenzene became more difficult and their stability decreased accordingly. Attempts for synthesizing ortho-n-alkyl iodosobenzene with carbon atoms more than five in the n-alkyl group were not successful. The structures of some ortho-n-alkyl iodosobenzenes were analyzed by ir and nmr spectra. The steric effect of the long chain n-alkyl groups in the formation of more stable polybridged structure was discussed.

关 键 词：亚碘酰苯 核磁共振谱 红外光谱 位阻效应 碳链增长 合成试验 长链烷基 邻位 

分 类 号：O62[理学—有机化学]