Conformational equilibria in N,N-dialkyltthioureas
✍ Scribed by G. González; N. Yutronic; M. Jara
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 547 KB
- Volume
- 46
- Category
- Article
- ISSN
- 1386-1425
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The conformational equilibrium in N-methylpiperidines (Scheme 1) has been the object of much recent interest.lq7 Work by Booth6 and by our own group5 indicated that the values for -AGO of FH3 R-f e RaNCH3 1 R = c&-3,5-di-Me Scheme 1 less than 0.8 kcal/mol given in the earlier literature8 (see also r
The effectofadjacentcarboniumion centers on the chemical shifts ofmethylgroups in the n.m.r. spectrum has been the subject of numerous studies (1,2). However, alkyl shifts in ., systems where partial. carbonic ion character has been Introduced by protonatlon of a carbowl function (e.g. I) have not b
## Recent investigations of a variety of substituted N-methylpiperidines indicate that the N-methyl group of g-methylpiperidine prefers the equatorial over the axial orientation by about -2.5 to 3.0 kcal/mol,1-5 a value considerably higher then that found in methylcyclohexane. 6,7 we now report on