Proazaphosphatrane P(RNCH2CH2)3N (R=Me,i-Pr)-Catalyzed Isomerization of Allylaromatics, Allyl Phenyl Sulfide, Allyl Phenyl Sulfone, andbis-Allylmethylene Double Bond-Containing Compounds
作者:Zhengkun Yu、Shenggang Yan、Guangtao Zhang、Wei He、Liandi Wang、Yu Li、Fanlong Zeng
DOI:10.1002/adsc.200505224
日期:2006.1
Using a proazaphosphatrane catalyst, P(RNCH2CH2)3N (R=Me, i-Pr), allylaromatics and allyl phenyl sulfide were selectively isomerized to the corresponding vinyl isomers in yields up to >99% in CH3CN at 40 °C. Efficient transformation of allyl phenyl sulfone at ambient temperature afforded an isomerization/dimerization product in >95% yield. Conjugation of bis-allylmethylene double bond-containing compounds
使用原氮杂磷杂环戊烷催化剂,将P(RNCH 2 CH 2)3 N(R = Me,i- Pr),烯丙基芳烃和烯丙基苯硫醚选择性异构化为相应的乙烯基异构体,在40° C的CH 3 CN中收率最高> 99%℃。在环境温度下烯丙基苯基砜的有效转化以> 95%的收率得到异构化/二聚产物。含双烯丙基亚甲基双键的化合物的共轭可得到相应的顺式,顺式-9,12-十八碳烯醇及其甲基醚的共轭异构体,收率最高可达97%,并且三甲基甲硅烷基的催化反应可制得甲硅烷基化/共轭产物。的以太顺式,顺式-9,12-十八碳烯基醇。基于在反应条件下在CD 3 CN或CH 3 CN中的1 H和31 P NMR监测的反应,讨论了反应机理。