Synthesis of Ketene<i>S,S</i>-Acetals from Tetraethyl Methylenebisphosphonate and Some of Its Reactions
作者:Richard Neidlein、Thomas Eichinger
DOI:10.1055/s-1991-28424
日期:——
Tetraethyl 2,2-bis(alkylthio)ethenediylidenebisphosphonates are synthesized by an efficient one-pot reaction of the salt of tetraethyl methylenebisphosphonate in tetrahydrofuran with carbon disulfide and alkyl halides. A 1,3-dithietane derivative is obtained with 1,2-dibromo-1,2-diphenylethane.
四乙基2,2-bis(烷基硫)乙烯二亚磷酸酯是通过四氢呋喃中四乙基亚甲基双磷酸盐与二硫化碳和烷基卤化物的高效一锅法反应合成的。通过1,2-二溴-1,2-二苯乙烯得到了1,3-二噻烷衍生物。