在
silica gel 作用下,
生成 (E)-5-(Hydroxy-methyl-amino)-5-phenyl-pent-2-enoic acid methyl ester
参考文献:
名称:
Regioselective addition of 1-trimethylsilyloxy-1-methoxy-1,3-dienes to aldonitrones catalysed by trimethylsilyl triflate
摘要:
1-Trimethylsilyloxy-1-methoxy-1,3-dienes (3a-d) regioselectively add to aldonitrones at -20 degrees C in dichloromethane in the presence of 10-20 % of trimethylsilyl triflate to give gamma-adducts in high yields; on the other hand, 1-trimethylsilyloxy-1-methoxy-1,3-hexadiene (3e) displayes a reversed regiochemical preference affording the alpha-adduct as the major product.
Regioselective addition of 1-trimethylsilyloxy-1-methoxy-1,3-dienes to aldonitrones catalysed by trimethylsilyl triflate
摘要:
1-Trimethylsilyloxy-1-methoxy-1,3-dienes (3a-d) regioselectively add to aldonitrones at -20 degrees C in dichloromethane in the presence of 10-20 % of trimethylsilyl triflate to give gamma-adducts in high yields; on the other hand, 1-trimethylsilyloxy-1-methoxy-1,3-hexadiene (3e) displayes a reversed regiochemical preference affording the alpha-adduct as the major product.