Copyright © 1986 Published by Elsevier Science Ltd. All rights reserved.
Andreas Spaltenstein, Philip A. Carpino and Paul B. Hopkins
Department of Chemistry, University of Washington, Seattle, WA 98195 U.S.A.
Received 10 September 1985.
Abstract
Treatment of a variety of aliphatic or aromatic primary amines with an N-chlorosuccinimideactivated allylic setenide affords in modest to good yield the corresponding allylically rearranged secondary amines. Examples are reported which define the scope and limitations of this process.
References
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The reported yields represent chromatographically homogeneous substances of greater than 95% purity. All products were characterized by 1H NMR 500 or 80 MHz. IR. and low resolution MS. Selected compounds were analyzed by high resolution MS or C, H, N combustion analysis. 1H NMR data (500 MHz. CDCl,) for selected secondary amine products follows [entry: chemical shift (δ), integral (H′s). multiplicity-(s,d,t,q,m). J(Hz)]: 1: 1.28, 3. t: 1.77. 3. s: 2.10. 1. bs: 3.22, 2. s: 3.40. 2 , s: 4.19, 2. q: 4.87. 2, s: 3: 1.8. 1. bs: 3.74. 1. s: 3.75. 1, s: 4.23. 1. d. 7: 5.12. 1, d. 10; 5.21. 1, d. 18: 5.97, 1, ddd. 7, 10. 18; 7.2–7.4. 10, m: 5: 4.8. 1, bs: 5.05, 1. d. 7: 5.28, 1. d. 19: 5.32, 1, d, 10; 6.05, 1, ddd, 7. 10. 19: 6.55. 2, d, 9: 7.35, 5. m: 8.07. 2. d, 9: 14a: 1.18, 3, t: 2.97, 2, m: 3.49, 1, t; 3.72, 3, s: 3.83. 1. d, 7: 4.12. 2, dq: 5.04, 2. s: 5.24, 1. d. 8: 5.28. 1. d, 12: 5.77, 1, ddd. 7. 8, 12: 6.89, 2, d. 9: 7.12. 2, d. 9: 7.2-7.5, 5. m: 1Ab: 1.16, 3, t: 2.92. 2, m: 3.50. 1. t: 3.68, 3. s; 3.86, 1, d, 7: 4.10. 2. dq: 5.04. 2. s: 5.22. 1. d, 7: 5.26. 1, d. 11: 5.77, 1, ddd. 7.7,11: 6.89. 2, d, 8: 7.11, 2. d, 8: 7.2-7.5, 5. m.
A major by-product in the case of aniline (entry 7) appears (500 MHz 1H NMR, MS evidence) to bear X = phenylseleno in the secondary amine product, presumably resulting from electrophic aromatic substitution on the aniline ring.
We thank the Dreyfus Foundation, the donors of the Petroleum Research Fund. administered by the American Chemical Society. Research Corporation, and Scripps Immunology Clinic for financial support.