Klemm, L. H.; Pou, Sovitj; Detlefsen, W. D.; Higgins, Clay; Lawrence, Ross F.
Journal of Heterocyclic Chemistry, 1984 , vol. 21, p. 1293 - 1296

Klemm, L. H.; Pou, Sovitj; Detlefsen, W. D.; Higgins, Clay; Lawrence, Ross F.
Journal of Heterocyclic Chemistry, 1984 , vol. 21, p. 1293 - 1296

Hewett
Journal of the Chemical Society, 1938 , p. 193,195
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Journal of the American Chemical Society, 1938 , vol. 60, p. 1331,1333
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Journal of the American Chemical Society, 1935 , vol. 57, p. 766,769
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Dornfeld; Coleman
Organic Syntheses, 1955 , vol. Coll. Vol. III, p. 701