Thermal and photochemical reactions of Fischer carbene complexes with trialkylsilyl-substituted alkynes
作者:Zhi Li、William H. Moser、Wenqin Zhang、Changhua Hua、Liangdong Sun
DOI:10.1016/j.jorganchem.2007.11.007
日期:2008.1
Thermal reaction of Fischercarbenecomplexes with triisopropylsilyl (TIPS) substituted alkynes in benzene afforded TIPS-substituted vinylketenes or 2-TIPS-substituted cyclobutenones as major products while photochemical reaction of Fischercarbenecomplexes with trimethylsilyl (TMS) substituted alkynes in acetonitrile afforded 3-TMS-substituted cyclobutenones.
Au(I)-Catalyzed Efficient Synthesis of Functionalized Bicyclo[3.2.0]heptanes
作者:Guotao Li、Xiaogen Huang、Liming Zhang
DOI:10.1021/ja802294t
日期:2008.6.1
An efficient Au(I)-catalyzed synthesis of highly strained and functionalized bicyclo[3.2.0]heptanes is developed. Subsequent couplings with various nucleophiles offer additional structural features/complexity. These one-pot, three-component reactions are proposed to proceed via a key 1,3-dipolar cycloaddition between a Au carbenoid-containing carbonyl ylide and ethyl vinyl ether.