Synthesis of Alkenylphosphonates through Palladium-Catalyzed Coupling of α-Diazo Phosphonates with Benzyl or Allyl Halides
作者:Yujing Zhou、Fei Ye、Xi Wang、Shuai Xu、Yan Zhang、Jianbo Wang
DOI:10.1021/acs.joc.5b00629
日期:2015.6.19
method for the synthesis of organophosphonates through palladium-catalyzed coupling of α-diazo phosphonates with benzyl or allyl halides has been developed. Trisubstituted alkenylphosphonates bearing versatile functional groups can be easily accessed in good yields and with excellent stereoselectivity through this method. Moreover, with similar strategy α-substituted vinylphosphonates can also be attained
Cu(I)-Catalyzed Tandem Reaction of Carbene Coupling and Horner–Wadsworth–Emmons Type Olefination: Access toward Enynes
作者:Yujing Zhou、Fei Ye、Qi Zhou、Yan Zhang、Jianbo Wang
DOI:10.1021/acs.orglett.6b00631
日期:2016.5.6
1,3-enynes has been successfully developed based on Cu(I)-catalyzed cross-coupling of α-diazo phosphonates and alkynes with a subsequent Horner–Wadsworth–Emmons (HWE) type reaction. This method provides straightforward access to conjugated enynes with high efficiency, good stereoselectivity and excellent functional group compatibility. Copper(I) carbene migratory insertion plays a crucial role in this
An efficient synthesis of ferrocene‐containing allenylphosphonates via CuI‐catalyzed coupling reaction of diazophosphonates with ferrocenylacetylenes in the presence of Et3N has been reported. This coupling methodology is applicable to a broad scope of substrates, allowing the synthesis of a range of synthetically valuable ferrocene‐containing trisubstituted allene derivatives in moderate to excellent