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H-1 NMR and Conformations of Halogenated 1,4-Dioxanes and 2,3-Dihydro-1,4-Dioxins

 

作者: L.A. Robinson,   J.G. Russell,  

 

期刊: Spectroscopy Letters  （Taylor Available online 1984）
卷期: Volume 17, issue 4-5  

页码: 307-316

 

ISSN:0038-7010

 

年代: 1984

 

DOI:10.1080/00387018408062688

 

出版商: Taylor & Francis Group

 

关键词: Ring dihedral angles;chair-chair ΔG+;twist-boat

 

数据来源: Taylor

 

摘要:

The conformations of halogenated 1,4-dioxanes have generally been studied by X-ray diffraction1,2in order to obtain values for the ring dihedral angles. The simple and widely used R value technique3,4requires two vicinal coupling constants, J-transand J-cis, and is not useable when only one vicinal J value results, as in the halogenated dioxanes1–5and dihydrodioxins7–9listed in Tables 1 and 2.

 

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