Intra-and intermolecular hetero-Diels-Alder reactions. 16. Stereospecificity in intramolecular hetero-Diels-Alder reactions of 2-benzylidene-1, 3-dicarbonyl compounds

…, M Bratz, R Machinek, GV Kiedrowski

文献索引：Tietze, Lutz F.; Bratz, Matthias; Machinek, Reinchard; Kiedrowski, Guenter v. Journal of Organic Chemistry, 1987 , vol. 52, # 8 p. 1638 - 1640

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被引用次数: 19

摘要

CEES was also lower in solutions of 6 X lo4 M HEES than in pure water. Therefore, contrary to earlier observations, we believe that these sulfonium chlorides are significant initial products in dilute solutions and stable final products in concentrated aqueous solutions of 2-chloroethyl sulfides. We are currently attempting to isolate these sulfonium chlorides for further study. The following are the NMR shifts of the salts identified in the reaction mixtures.