large strong-field increment for 2-CH~ was observed here, and the chemical shift for this carbon atom is 14.5 ppm, whereas it was more than 19.8 ppm in all other cases. A "~ effect" in this case is clearly observed not only for C(s ) but also for C(~) and C(6 ) (Table 3). The substantial dependence
The dimer of 2-methyl-1,1-diphenylpropyl radicals and its reactivity
✍ Scribed by Hans-Dieter Beckhaus; Jürgen Schaetzer; Christoph Rüchardt
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- French
- Weight
- 221 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
The title radicals dimerize to an a,p-dimer 1 and not to an cr,a-dimer 2 as previously 8) assumed. The structure of the dimers of t-benzhydryl radicals Ph2CR in general is strongly dependent on the bulkiness of the R group.
Benzyl type radicals l can dimerize to form either a,n-dimers 2 or a,p-dimers 22). The latter dimerisation process seems to be favoured ZZ
📜 SIMILAR VOLUMES
## Abstract Condensation of 1,3,4‐trimethyl‐1,5‐dihydro‐2__H__‐pyrrol‐2‐one, prepared in high yield from 3,4‐dimethylpyrrole, with pyrrole‐2‐carboxaldehyde and 1‐methylpyrrole‐2‐carboxaldehyde gives a mixture of Z‐ and __E__‐1,3,4‐trimethyl‐2,2′‐pyrromethen‐5[1__H__]‐one (7 and 8) and 1,1′,3,4‐tetr
Akstraet~opolymers of styrene (S) and methyl methacrylate (MMA) have been prepared with different concentrations of ethyl aluminium sesquichloride (EASC) using t3C-enriched forms of azo-bis-(methylisobutyrate) (AIBMe) and azo-bis-(isobutyronitrile) (AIBN). The end-group and overall structure of the