80283-05-2Relevant academic research and scientific papers
A FACILE SYNTHESIS OF ο-SUBSTITUTED CONJUGATED POLYENONES VIA ARSONIUM SALT AND ITS APPLICATION TOWARDS THE SYNTHESIS OF NAVENONE A
Shi, Lilan,Xia, Wenjuan,Yang, Jianhua,Wen, Xueging,Huang, Y. Z.
, p. 2155 - 2158 (2007/10/02)
In the presence of K2CO3, a variety of aldehydes condensed with the arsonium bromide 8 at 0-3 deg C to give exclusively ο-substituted polyenones 1 in good yields, and the synthesis of navenone A was achieved by this procedure.
ω-BROMOALKAPOLYENYLMETHYL KETONES-I. REACTION OF 5-BROMO-3-PENTEN-2-ONE WITH TRIPHENYLPHOSPHINE
Font, J.,March, P. de
, p. 2391 - 2396 (2007/10/02)
The reaction of (E)-5-bromo-3-penten-2-one with triphenylphosphine affords a 3:1 mixture of two protomeric phosphonium salts: 4-oxo-2-pentenyltriphenylphosphonium bromide and 4-oxo-1-pentenyltriphenylphosphonium bromide, characterized by the 13C NMR spectrum of the mixture.However, the common phosphorane of these salts gives two condensation products with benzaldehyde, corresponding to α- and γ-condensation respectively.
