A Method for the Synthesis of Carbene Precursors from Aldehydes and the Metalates (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)(CO)<sub>2</sub>Fe<sup>-</sup> and (η<sup>5</sup>-C<sub>9</sub>H<sub>7</sub>)(CO)<sub>2</sub>Fe<sup>-</sup>
作者:Ronald D. Theys、Roy M. Vargas、Qinwei Wang、M. Mahmun Hossain
DOI:10.1021/om970698y
日期:1998.3.1
Nucleophilic addition of the metalate Cp(CO)2Fe-M+ (M = Na, K) to aldehydes RCHO (R = Ph, CH3, p-OCH3Ph, p-ClPh, p-CH3Ph, p-CF3Ph, o-OCH3Ph, and CHC(CH3)2) and subsequent capture with ClSi(CH3)3 provided the (α-siloxyalkyl)iron complexes Cp(CO)2FeCH(OSiMe3)R in 42−79% yield. This new reaction was extended to the indenyl-ligated metalate In(CO)2Fe-Na+ with several aldehydes RCHO (R = Ph, CH3, p-OCH3Ph). Treatment
亲核加成金属化物的Cp(CO)的2铁-中号+(M =钠,钾),以醛RCHO(R =苯基,CH 3,p -OCH 3的pH值,p -ClPh,p -CH 3的pH值,p - CF 3 Ph,o -OCH 3 Ph和CH C(CH 3)2),然后用ClSi(CH 3)3捕获,得到了(α-甲硅烷氧基烷基)铁络合物Cp(CO)2 FeCH(OSiMe 3)R产率为42-79%。该新反应扩展到具有几个醛RCHO(R = Ph,CH 3,p -OCH 3 Ph)的茚基连接的金属化物In(CO)2 Fe - Na +。在烯烃存在下,在-25至-78°C之间用三氟甲磺酸三甲基甲硅烷基酯处理(α-甲硅烷氧基烷基)铁配合物,通过卡宾铁配合物得到环丙烷。