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Eine neue Fulvensynthese. 4. Mitteilung
Author(s) -
Kyburz R.,
Schaltegger H.,
Neuenschwander M.
Publication year - 1971
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19710540410
Subject(s) - chemistry , triethylamine , fulvenes , condensation , acetic acid , organic chemistry , hydrocarbon , acetic anhydride , medicinal chemistry , catalysis , physics , thermodynamics
Fulvenes are prepared by condensation of sodium cyclopentadienide with x‐acetoxy‐x‐chloro‐hydrocarbon derivatives, followed by elimination of acetic acid with triethylamine. The yields are approximately 60% for 6‐alkylfulvenes and similar to those of the classical synthesis for 6, 6‐polymethylenefulvenes. The reaction is carried out at low temperatures and under water‐free conditions. The purification of the fulvenes is simple.