Triflic acid-mediated phenylation of N-acylaminoalkyl diethylacetals and N-acyl-2-phenyl cyclic amides
作者:Frank D. King、Stephen Caddick
DOI:10.1039/c0ob01149e
日期:——
The reaction of N-acylaminoalkyl diethylacetals with triflic acid in benzene gave N-acylamino-diphenylalkyls. The proposed intermediates are the N-acyl-2-phenyl cyclic amides, which themselves are similarly converted to N-acylamino-diphenylalkyls.
Gold-Catalyzed Tandem Cycloisomerization and Dimerization of Chiral Homopropargyl Sulfonamides
作者:Yong-Fei Yu、Chao Shu、Cang-Hai Shen、Tian-Yi Li、Long-Wu Ye
DOI:10.1002/asia.201301058
日期:2013.12
A reaction built for two: A novel gold‐catalyzed tandemcycloisomerization/dimerization of chiralhomopropargylsulfonamides has been developed. The reaction provides ready access to functionalized pyrrolidines in mostly good to excellent yields. Notably, excellent diastereoselectivities (>50:1) were also achieved in all cases.