期刊
TETRAHEDRON LETTERS
卷 56, 期 17, 页码 2172-2175出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2015.03.021
关键词
[2+2+2] co-trimerization; Diels-Alder reaction; Rongalite; Spirocycles; Sulfone derivatives; Wilkinson's catalyst
资金
- DST-New Delhi
- University Grants Commission, New Delhi
- Department of Science and Technology
- IRCC (IITB)
We have established a simple synthetic method to bis-armed spirocycles by employing a two-directional [2+2+2] co-trimerization and the [4+2] cycloaddition reaction as key steps. Here, we have used readily available carbonyl compounds to generate a variety of bis-armed spirocycles in a diversity-oriented manner. The sultine derivatives generated here are valuable latent diene equivalents suitable for the Die Is-Alder (DA) reaction to assemble various spirocycles under mild reaction conditions. These sultine derivatives have been prepared by using rongalite, which on treatment with different dienophiles delivered a range of his-armed DA adducts. In addition, these valuable sultine building blocks cleanly rearranged to bis-sulfone derivatives under thermal conditions. (C) 2015 Elsevier Ltd. All rights reserved.
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