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Reactions of phosphorus compounds. 28. Mechanism of the formation of 2-methyl-2H-1-benzopyran by the reaction of 3-(o-formylphenoxy)propylphosphonium salts in alcoholic alkoxide

โœ Scribed by Schweizer, Edward E.; Minami, Toru; Crouse, Dale M.


Book ID
127152860
Publisher
American Chemical Society
Year
1971
Tongue
English
Weight
603 KB
Volume
36
Category
Article
ISSN
0022-3263

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Reaction mechanism in the formation of p
โœ M. Jenhi; E.H. El Ghadraoui; H. Bali; M. El Aatmani; M. Rafiq ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 376 KB

A calcining at 3000C and smtering process were proposed to obtain a pure perovskite phase Pb(Fel/2 Nbl/2)O3 from a 4PbO/Nb205/Fe203 mixture, which is calcined at 300ยฐC for several days and sintered at various temperatures for 2h; the resultant powder was air quenched. The X-ray powder diffraction pa