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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 4, 1974 - Issue 1
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Original Articles

Pentacyclic Triterpene Synthesis. IV a New Method for Accomplishing Robinson-Nazarov Annelations

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Pages 71-77 | Received 06 Feb 1974, Published online: 05 Dec 2006

References

  • Nazarov , I. N. and Zavyalov , S. I. 1953 . Zh. Obshch. Khim. , 23 : 1703
  • Wenkert , E. , Alfonso , A. , B-son Bredenberg , J. , Kaneku , C. and Tahara , A. 1964 . J. Amer. Chem. Soc. , 86 : 2038 However, in other cases, excellent yields have been realized, see
  • Indicated yields are those realized in our laboratories. The last step, in particular, is capricious
  • Stork , G. and Guthikonda , R. N. 1972 . Tetrahedron Letters , : 2755
  • Guthikonda , R. N. personal communication
  • Heathcock , C. H. and Ellis , J. E. 1971 . Chem. Commun. , : 1474
  • Ireland , R. E. and Marshall , J. A. 1959 . J. Amer. Chem. Soc. , 81 : 2909
  • Stork , G. , Brizzolara , A. , Landesman , H. , Szmuskovicz , J. and Terrell , R. 1963 . J. Amer. Chem. Soc. , 85 : 207

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