sulfuric acid; iodine in dimethyl sulfoxide Yields of byproduct given;
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Ahmad, Iqbal; Khwaja, Ishratullah; Ilyas, M.; Rahman, W.
Indian Journal of Chemistry, Section B: Organic Chemistry Including Medicinal Chemistry, 1982 , vol. 21, # 1 p. 78
Gunatilaka, A. A. Leslie; Silva, A. M. Y. Jasmin De; Sotheeswaran, Subramaniam; Balasubramaniam, Sinnathamby; Wazeer, Mohamed I. M.
Phytochemistry (Elsevier), 1984 , vol. 23, # 2 p. 323 - 328