References
- Aziz , M. and Rouessac , F. 1987 . Tetrahedron Lett. , 28 ( 23 ) : 2579
- 1988 . Tetrahedron , 44 ( 1 ) : 101
- 1988 . Bull Soc. Chim. Fr. , : 555
- Hofer , O. and Greger , H. 1984 . Phytochem. , 44 ( 1 ) : 181 see for example
- Mendez , J. 1978 . Phytochem. , 17 ( 4 ) : 820
- Borris , R. , Cordell , G. and Farnworth , N. 1980 . J. Nat. Prod. , 43 ( 5 ) : 641
- Yoshida , Y. , Nagai , S. , Oda , N. and Sakakibara , J. 1986 . Synthesis , : 1026
- Johnson , J. R. 1941 . Org React. , Vol. 1 : 248 – 251 .
- Seshadri , T. R. and Sood , M. S. 1963 . Ind. J. Chem. , 1 : 291
- Villemin , D. 1983 . Chem and Ind. , : 478
- commercial grade zinc oxide 99.5 %, purchased to Janssen Chimica
- Davidson , D. and Bernhard , S. A. 1948 . J. Amer. Chem. Soc. , 70 : 3426 purchased from Aldrich Co. or prepared according to
- Rieche , A. , Gross , H. and Hoft , E. 1967 . Org. Synth. , 47 : 1 4b,(R=O) and 4c (R=O) were prepared from 2-methoxy-1-benzofurane through formylation with CHCl2OMe/TiCl4 – adaptation of
- Corey , E. J. 1952 . J. Amer. Chem. Soc. , 74 : 5897 standard conditions with malonic acid sometimes fails, see
- Wiley , R. H. and Smith , N. R. 1963 . Org. Synth. Coll , Vol 4 : 731
- Dean , F. M. 1963 . “Naturally Occuring Oxygen Compounds” , 176 London : Butterworths .