Author:
Djerassi C.,Archer A. A. P. G.,George T.,Gilbert B.,Shoolery J. N.,Johnson L. F.
Publisher
Springer Science and Business Media LLC
Subject
Cell Biology,Cellular and Molecular Neuroscience,Pharmacology,Molecular Biology,Molecular Medicine
Reference15 articles.
1. B. Gilbert, L. D. Antonaccio, A. A. P. G. Archer, andC. Djerassi, Exper.16, 61 (1960).
2. For details on measurement and recording of NMR results seeC. Djerassi, T. Nakano, A. N. James, L. H. Zalkow, E. J. Eisenbraun, andJ. N. Shoolery, J. org. Chem., in press. For reasons pointed out in that paper, dimensionless chemical shift units are used,δint/SiMe4 = cps/60 × 106 ppm (for a 60 megacycle instrument). For conversion to the Tiersτ scale [G.V.D. Tiers, J. phys. Chem.62, 1151 (1958)] the following simple relationship may be used:τ = 10 −δ int/SiMe4.
3. J. F. D. Mills andS. C. Nyburg, Tetrahedron Letters, No. 11, 1 (1959);
4. J. chem. Soc.1960, 1458. For confirmatory chemical evidence seeH. Conroy, P. R. Brook, andY. Amiel, Tetrahedron Letters, No. 11, 4 (1959).
5. G. F. Smith andJ. T. Wrobel, J. chem. Soc.1960, 1463.
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