## Abstract Some 2‐arylsulphonylamido‐2‐thiono‐5‐methyl‐1,3,2‐dioxaphospholanes (1), containing two chiral centres, give NMR spectra in which splittings of the ^1^H and ^13^C signals of the 5‐methyl substituent and of the ^31^P signal indicate that they exist in an approximately 70:30% ratio of two
13C and 31P spectra and the geometries of cis - and trans-2-Z-4-Me-1,3,2-dioxaphospholanes
✍ Scribed by Han-Wan Tan; Wesley G. Bentrude
- Book ID
- 104213478
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- French
- Weight
- 215 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Carbon-13 nmr spectroscopy has shown itself to be a most powerful tool in the lnvestlgatlon of conformations of cyclic systems, e g. 1,3-dloxanesl 2 and cyclohexanes Recently3 13C nmr has been combined with 31P nmr and pmr results In the determlnatlon of the conformatlons of the trivalent six-membered ring heterocycles most closely related to 1,3dloxanes, the 1,3,24loxaphosphorlnanes (l_) By contrast to what 1s known about the 1,3-dloxanes,' the
📜 SIMILAR VOLUMES
## Abstract ^13^C NMR spectra were measured for a series of ethyl __cis__‐ and __trans__‐2‐(__p__‐substituted ‐ phenyl) ‐ 1 ‐ cyclopropanecarboxylates. The effects of the __para__ substituents and the geometry on the chemical shifts are discussed.
## Abstract ^1^H and ^13^C NMR spectra of __cis__‐ and __trans__‐3‐{2‐[2‐(4‐methylphenyl)ethenyl]phenyl]}sydnones, the first stilbene‐substituted mezoionic oxadiazolium rings, were fully assigned combining the information in various solvents, such as deuterated benzene, acetone and chloroform, usin