S. V. Kelkar, A. A. Arbale, G. S. Joshi, G. H. Kulkarni. Claisen Orthoester Rearrangement Reaction with Secondary and Tertiary Allylic Alcohols: Synthesis of 1,2 Secochrysanthemates and Their Structural Analogues // Synthetic Communications, Volume 20, Issue 6 March 1990 , pages 839 - 847.
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http://dx.doi.org/10.1080/00397919008052329