Substituent effects on methyl proton chemical shifts in substituted phenyltrimethylsilanes and tert-butylbenzenes
β Scribed by Hideki Sakurai; Masako Ohtsuru
- Book ID
- 108351380
- Publisher
- Elsevier Science
- Year
- 1968
- Tongue
- English
- Weight
- 447 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0022-328X
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Ring and ester proton chemical shifts in six series of substituted methyl pyridinecarboxylates have been measured. Results for ring protons __ortho__ and __para__ to the substituent can generally be accounted for by additive substituent, ester and nitrogen effects. Shifts for protons __
Proton NMR data for a number of l-.IZ-4-Y-3,5-dimethylbenzenc?s and l-X-2-Y-4-Z-3,5-dimethylbenzenc?s are presented. The proton chemical shifts of the methyl groups at positions 3 and 5 are mainly affected by the ring current effect of the snbstituents. Thii conclusion was strongly supported by the
## Abstract ^1^H chemical shift assignments are presented for 2βmethyladamantane, 2βmethylnorbornane (__endo__ and __exo__) and 2βmethylnorbornene (__endo__ and __exo__). Resonance assignment was achieved using a variety of 1D and 2D homoβ and heteronuclear (^1^Hβ^13^C) experiments. The methyl grou