Study on Radical Amidation onto Aromatic Rings with (Diacyloxyiodo)arenes
摘要:
Sulfonamides of primary amines bearing an aromatic ring at the gamma-position were treated with (diacyloxyiodo)arenes and:iodine under irradiation conditions with;a tungsten-lamp to give the corresponding 1,2,3,4-tetrahydroquinoline derivatives in moderate to good yields. Here, the reactivity depends on the Z-group (protecting group) of the starting amides. Under the same reaction conditions, some sulfonamides were treated with (diacetoxyiodo)benzene and iodine in the presence of aromatics to give the corresponding N-arylated amides. These reactions proceed through the intramolecular and intermolecular amidations onto aromatic rings via the sulfonamidyl radicals formed.
An agent for modulating the function of an RFRP receptor, characterized by containing either a compound represented by the formula (I)
[wherein ring A represents an optionally substituted aromatic ring; ring B represents an optionally substituted benzene ring; X represents oxygen, S(O)
n
(n is an integer of 0 to 2), or NR
3
(R
3
represents hydrogen, an optionally substituted hydrocarbon group, or an optionally substituted heterocyclic group); and R
1
and R
2
each represents hydrogen, an optionally substituted hydrocarbon group, or an optionally substituted heterocyclic group] or a salt of the compound.
An agent for modulating the function of an RFRP receptor, characterized by containing either a compound represented by the formula (I)
[wherein ring A represents an optionally substituted aromatic ring; ring B represents an optionally substituted benzene ring; X represents oxygen, S(O)
n
(n is an integer of 0 to 2), or NR
3
(R
3
represents hydrogen, an optionally substituted hydrocarbon group, or an optionally substituted heterocyclic group); and R
1
and R
2
each represents hydrogen, an optionally substituted hydrocarbon group, or an optionally substituted heterocyclic group] or a salt of the compound.
ULTRAMINE: A High-Capacity Polyethylene-Imine-Based Polymer and Its Application as a Scavenger Resin
作者:Michael Roice、S�ren F. Christensen、Morten Meldal
DOI:10.1002/chem.200400314
日期:2004.9.20
polyethylene-imine resin (ULTRAMINE) is described, and itsapplication as a scavengerresin in various acylation reactions is demonstrated. The inverse suspension polymerization technique was used for the synthesis of well-defined spherical polymer beads. Polymer beads with different cross-linking densities were synthesized according to the degree of acryloylation of the polyethylene-imine polymer. The resin was