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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 27, 1997 - Issue 13
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Original Articles

Influence of Catalyst on the Formation of 5(10)-Ene Ketals From Estra-4-en-3-ones

Arvind S. Negi Medicinal Chemistry Division, Central Drug Research Institute, Lucknow, 226001, INDIA
,
Amita Kaushal Medicinal Chemistry Division, Central Drug Research Institute, Lucknow, 226001, INDIA
,
Reema Rastogi Medicinal Chemistry Division, Central Drug Research Institute, Lucknow, 226001, INDIA
&
Suprabhat Ray Medicinal Chemistry Division, Central Drug Research Institute, Lucknow, 226001, INDIA
Pages 2197-2201 | Received 26 Jul 1996, Published online: 22 Aug 2006

References & Notes

  • Meskens , F. A.J. 1981 . Synthesis , : 501
  • Chan , T. H. , Brook , M. A. and Chaly , T. 1983 . Synthesis , : 203
  • Tandon , A. and Ray , S. 1992 . Indian J. Chem. , 31B : 58
  • Verma , P. and Ray , S. 1990 . Indian J. Chem. , 29B : 652
  • Ketal, 3(R = H): mp,111–13°(115°)6, 1HNMR(400Hz, CDCI3):δ0.76(s,3H, 18-CH3),2.30(s, 1H, 10CH), 3.64(t, 1H, 17-CH, J = 9.2Hz), 3.96(s,4H, CH2-CH2 of ketal group). Mass: 318(M+).
  • Roussel-UCLAF Neth. Appl. 6,603,268 (Cl, C07c), Sept.19, 1966. Chem. Abstr.66:P65718x.
  • Colton , Frank B. to G.D. Searle & Co.) US . 2, 946, 809 . July 26, 1960 . Chem. Abstr.54:P22733e
  • Japan . 16299(67)(C1,16D611), Sept.4, Appl. . Oct.29, 1964 . PP. Chem. Abstr. 68: P114829m.
  • Hofmeister , H. , Laurent , H. , Schulze , P. E. , Annen , K. , Pollow , K. , Grill , H. J. and Schering , A-G . Eur. Pat. Appl. EP . 137434(C1.C07J1/00) . 17 April 1985 . Chem. Abstr.103:P215643t.

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