Photochemical reactions of thiobenzamides bearing an allylic substituent on the nitrogen atom: double-bond migration via tandem 1,4- and 1,6-hydrogen transfer
摘要:
N-(2-苯丙-2-烯基)硫代苯甲酰胺 1a–d 在照射下发生双键迁移,生成 N-(2-苯丙-1-烯基)硫代苯甲酰胺 2a–d,经历了连续的 1,4- 和 1,6-氢转移。N-(丙-2-烯基)硫代苯甲酰胺 1e 和 N-(3-苯丙-2-烯基)硫代苯甲酰胺 1f 的光反应未生成迁移产物,但以低产率生成了吡咯 3e 和 3f 及去烷基化产物 4a。
Lawesson's reagent for direct thionation of hydroxamic acids: Substituent effects on LR reactivity
作者:Witold Przychodzeń
DOI:10.1002/hc.20259
日期:——
To explore the generality and scope of direct thionation of hydroxamicacids (HAs), the reaction of various structurally diverse HAs with Lawesson's reagent was investigated. The yield of thiohydroxamic acid (THAs) is poor when HAs possess bulky acyl and/or N-substituents, acidic α-hydrogen atoms, or an N-phenyl ring. THAs yields were correlated with Brown sigma parameter. The relative rates of two
"Absolute" Asymmetric Synthesis Using the Chiral Crystal Environment: Photochemical Hydrogen Abstraction from Achiral Acyclic Monothioimides in the Solid State
MOREAU R. C.; LOISEAU P.; BERNARD J.; SEBASTEIN F.; LEROY R., EUR. J. MED. CHEM.-CHIM. THER., 1979, 14, NO 4, 317-320
作者:MOREAU R. C.、 LOISEAU P.、 BERNARD J.、 SEBASTEIN F.、 LEROY R.
DOI:——
日期:——
Photochemical reactions of thiobenzamides bearing an allylic substituent on the nitrogen atom: double-bond migration via tandem 1,4- and 1,6-hydrogen transfer
作者:Hiromu Aoyama
DOI:10.1039/a700247e
日期:——
N-(2-Phenylprop-2-enyl)thiobenzamides 1a–d
underwent
double-bond migration on irradiation to give
N-(2-phenylprop-1-enyl)thiobenzamides 2a–d via
consecutive 1,4- and 1,6-hydrogen transfer. Photoreaction of an
N-(prop-2-enyl)thiobenzamide 1e and an
N-(3-phenylprop-2-enyl)thiobenzamide 1f did not give migration
products, but afforded pyrroles 3e and 3f and dealkylation products 4a
in low yields.
N-(2-苯丙-2-烯基)硫代苯甲酰胺 1a–d 在照射下发生双键迁移,生成 N-(2-苯丙-1-烯基)硫代苯甲酰胺 2a–d,经历了连续的 1,4- 和 1,6-氢转移。N-(丙-2-烯基)硫代苯甲酰胺 1e 和 N-(3-苯丙-2-烯基)硫代苯甲酰胺 1f 的光反应未生成迁移产物,但以低产率生成了吡咯 3e 和 3f 及去烷基化产物 4a。