Synthesis and Aza-Wittig reactions of Cyclic Amino-phosphonium Salts

T Sakai, T Kodama, T Fujimoto, K Ohta…

Index: Sakai, Toshito; Kodama, Takuya; Fujimoto, Tetsuya; Ohta, Kazuchika; Yamamoto, Iwao; Kakehi, Akikazu Journal of Organic Chemistry, 1994 , vol. 59, # 23 p. 7144 - 7147

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Citation Number: 13

Abstract

Cyclic phosphonium salts are versatile reagents for the synthesis of unsymetrical unconjugated dienes,'S2 because their Wittig reactions provide alkenylphosphine oxides which can be subjected to further alkenation by the Horner-Wittig reaction. Applications of these tandem Wittig reactions include syntheses of insect sex pheromone~,~ 1, 4- diketone~,~ cycloheptenyldiphenylphosphine oxide derivative^^,^ and hydroazulenes. 6 ...

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