Iron-Catalyzed Direct Alkenylation of 2-Substituted Azaarenes with <i>N</i>-Sulfonyl Aldimines via C–H Bond Activation
作者:Bo Qian、Pan Xie、Yinjun Xie、Hanmin Huang
DOI:10.1021/ol200684b
日期:2011.5.20
A novel iron-catalyzed alkenylation of 2-substituted azaarenes through sp3 C–Hbondactivation has been developed. A favorable E2-elimination is proposed as a key step to cleavage of C–H and C–N bonds for the construction of a C═C bond in high stereoselectivity. This transformation represents an efficient way to synthesize 2-alkenylated azaarenes from simple starting materials.
Solid Phase Synthesis of 1,2-Disubstituted Alkenes: A Novel Alkynyldihydropyridine to Alkenylpyridine Isomerization
作者:Chixu Chen、Bowei Wang、Benito Munoz
DOI:10.1055/s-2003-43343
日期:——
A series of 1,2-disubstituted pyridylalkenes have been prepared using a solid-phase resin approach. This approach takes advantage of a novel alkynyldihydropyridine to alkenylpyridine isomerization.