Syntheses and characterizations of tin complexes of methylenediphenylphosphinate ligands: the crystal structures of [Ph4−xSn(CH2P(S)Ph2)x] (x = 1–4) and [Ph2SnCl(CH2P(O)Ph2)]2
摘要:
Reactions between methylenediphenylphosphinate anions [CH2P(E)Ph2]-(E = S, O) and appropriate chlorophenyltin(IV) compounds in tetrahydrofuran afforded the organotin compounds [Ph4-xSn(CH2P(S)Ph2)x], (x = 1-4), 1-4 and [Ph2SnCl(CH2 P(O)Ph2)]2, 5. All compounds have been characterized structurally, 1-4 as 4-coordinate monometallic species and 5 as a bimetallic 8-membered metallacycle which is 5-coordinate at each metal atom.
The reaction of trihenylphosphine sulfde with alkyllithium reagents
作者:Dietmar Seyferth、Dean E. Welch
DOI:10.1016/s0022-328x(00)87594-4
日期:1964.6
The reaction of triphenylphosphine sulfide with methyl- and ethyl- lithium in ether-THF mixtures resulted in (C6H5)3P(S)CH2Li and (C6H5)3P(S)CH(CH3)Li respectively, which were characterized by hydrolysis, carbnation and reaction with triphenyltin chloride. Evidence is presented to show that the mechanism of formation of (α-lithioalkyl)diphenylphosphine sulfides by this route proceeds by an initial
三苯基膦硫化物与甲基锂和乙基锂在乙醚-THF混合物中的反应生成(C 6 H 5)3 P(S)CH 2 Li和(C 6 H 5)3 P(S)CH(CH 3) Li分别具有水解,碳酸化和与三苯基氯化锡反应的特征。证据表明,通过该途径形成(α-硫代烷基)二苯基膦硫化物的机理是通过初始的非常快速的交换反应进行的,该交换反应给出了烷基二苯基膦硫化物和苯基锂。然后后者在随后的较慢的步骤中将烷基二苯基膦硫化物金属化,得到观察到的试剂。
<b>A New And Convenient Route To Organofunctional Phosphine Oxides And Sulfides</b>
作者:Dietmar. Seyferth、Dean E. Welch、James K. Heeren