References
- Morita , N. , Idtahara , Y. and Asao , T. 1972 . Tetrahedron Letts. , : 869 To whom all enquiries should be addressed
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- We found that the reaction of 2-methoxytropone and its derivatives also gave methoxyheptafulvalenes in a better yields together with oxaazulanone derivatives. The results will appear elsewhere
- We thank Dr. T. rlachiguchi, Saitama University, for donation of 2, 3-benzotropone
- Staudinger , H. and Kon , N. 1911 . Liebigs Ann. , 384 : 38 C. Jutz, I. kommel, I. Lengyel and J. Feeney, Tetrahedron. 22, 1809 (1966)