Synthesis of 3,4-Dihydrospiro[2H-1-Benzopyran-2,2′-bicyclo[2.2.1]heptane] Ring System

References

• Subramanian , R. S. and Balasubramanian , K. K. 1989 . Tetrahedron Lett. , 30 : 2297 Synthesis of spirochromene system
   Web of Science ®Google Scholar
• Takasaki , M. , Konoshima , T. , Fujitani , K. , Yoshida , S. , Nishimura , H. , Tokuda , H. , Nishino , H. , Iwashima , A. and Kozuka , M. 1990 . Chem. Pharm. Bull. , 38 : 2737 and references therein, Euglobals
   PubMed Web of Science ®Google Scholar
• Krause , M. and Hoffman , M. R. 1990 . Tetrahedron Lett. , 31 : 6629
   Web of Science ®Google Scholar
• Salomon , R. G. , Mazza , S. M. and Lal , K. J. 1989 . Org. Chem. , 54 : 1562 robustadials
   Web of Science ®Google Scholar
• Mazza , S. M. , Lal , K. and Salomon , R. G. J. 1988 . Org. Chem. , 53 : 3681 robustadial analogs
   Web of Science ®Google Scholar
• Lal , K. , Zarate , E. A. , Youngs , W. J. and Salomon , R. G. 1988 . Org. Chem. , 53 : 3673
   Web of Science ®Google Scholar
• Cohen , N. , Weber , G. , Banner , B. L. , Lopresti , R. J. , Schaer , B. , Focella , A. , Zenchoff , G. B. , Chiu , A. M. and Todaro , L. 1989 . J. Med. Chem. , 32 : 1842 other spiro benzopyrans
   PubMed Web of Science ®Google Scholar
• Heller , H. G. , Oliver , S. N. , Whittall , J. and Tomlinson , I. Eur. Pat. Appl. EP 246114 A2 . 19 Nov. 1987 .
   Google Scholar
• Kabbe , H. J. , Widdig , A. , Niewoehner , U. , Knorr , A. , Garthoff , B. and Kazda , S. Ger. Offen. DE 3411992 A . 1 Oct 10, 1985 . and previous patents by the Bayer group
   Google Scholar
• Brogden , P. J. and Hepworth , J. D. 1983 . J. Chem. Soc., Perkin Trans. 1 , : 827
   Google Scholar
• Yamato , M. , Hashigaki , K. , Tsutsumi , A. and Tasaka , K. 1981 . Chem. Pharm. Bull. , 29 : 3494
   PubMed Web of Science ®Google Scholar
• Canonne , P. , Belanger , D. and Lemay , G. 1981 . Heterocycles , 15 : 455
   Web of Science ®Google Scholar
• Matlin , S. A. , Chan , L. and Catherwood , B. 1990 . J. Chem. Soc., Perkin Trans. 1 , : 89
   Google Scholar
• Nayak , U. R. and Lamture , J. B. 1983 . Indian J. Chem. , 22B : 853 Preparation and applications of camphene oxide in synthesis of natural products
   Google Scholar
• Brown , H. C. , Kawakami , J. H. and Kegami , S. 1970 . J. Am. Chem. Soc. , 92 : 6914
   Web of Science ®Google Scholar
• Christensen , P. A. and Willis , B. J. 1979 . J. Org. Chem. , 44 : 2012
   Web of Science ®Google Scholar
• Thomas , A. F. 1973 . “The Total Synthesis of Natural Products” , Edited by: ApSimon , J. vol 2 , 149 – 54 . New York : Wiley . see also ref. 2c., Camphene-camphor rearrangement is well known
   Google Scholar
• Brecknell , D. J. , Carman , R. M. and Greenfield , K. L. 1984 . Aust. J. Chem. , 37 : 1075
   Web of Science ®Google Scholar
• Creger , P. L. J. 1972 . Org. Chem. , 37 : 1907
   PubMed Web of Science ®Google Scholar
• Lal , K. , Ghosh , S. and Salomon , R. G. 1987 . Org. Chem. , 52 : 1072
   Web of Science ®Google Scholar