The Preparation and<sup>13</sup>C-NMR Spectra of Alkoxymethyltriphenylphosphonium Salts
作者:Yoshihisa Yamamoto、Zenjiro Kanda
DOI:10.1246/bcsj.53.3436
日期:1980.12
Alkoxymethyltriphenylphosphonium salts, [(C6H5)3PCH2OR]X, X: Cl, Br, and I, R: CH3, C2H5, and i-C3H7, have been obtained from the reaction of the triphenylphosphine and the corresponding alkyl halomethyl ether. In the 13C-NMR spectra of these salts, the coupling constant (JCP) is 68–71 Hz, which is larger than that (JCP: 48–56 Hz) of [(C6H5)3PCH2R]Br, R: H, CH3, and i-C3H7, Me3P=S and Me3P=Se, while it is close to that(66–69 Hz) of Me3P=O and Et3P=O. The coupling constant (JCP) of these salts can be caused by the oxygen atom in the salts.
烷氧基甲基三苯基膦盐[(C6H5)3PCH2OR]X,X:X:Cl、Br 和 I,R:CH3、C2H5 和 i-C3H7,由三苯基膦和相应的烷基卤代甲基醚反应得到。在这些盐的 13C-NMR 光谱中,耦合常数(JCP)为 68-71 Hz,大于[(C6H5)3PCH2R]Br(R:H、CH3 和 i-C3H7)、Me3P=S 和 Me3P=Se 的耦合常数(JCP:48-56 Hz),而接近 Me3P=O 和 Et3P=O 的耦合常数(66-69 Hz)。这些盐的耦合常数(JCP)可能是由盐中的氧原子引起的。