1,4-Addition of 2-Lithio-1,3-dithianes to Substituted ω-Nitrosyrenes
✍ Scribed by Priv.-Doz. Dr. D. Seebach; Dipl.-Chem. H. F. Leitz
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- English
- Weight
- 252 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0044-8249
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📜 SIMILAR VOLUMES
the line-shape changes allow the detection of two different dynamic processes, which may be assigned to inhibited rotations about the partial C C and C N double bonds of the E-isomers (Scheme 2). Above ca. 0°C conversion into the isomer with Z-configurated CC double bond, which contains an intramol
ses. Their relative total energies are 0, 0.4, 4.4 and -3.6 kcalmol-I , respectively.1111 Although the difference in energy between the (q2-0,C-HNCO)(q2-C,N-HNCO) and (q2-C,N-HNCO), isomers is small, the calculations are inconsistent with the observed structure. Next, we used molecular mechanics ca