procedure for the thermo-promoted reactions of anthranil with different substrates was developed. The catalyst-free process affords various useful building blocks with good to moderate yields. This chemistry enables several step- and cost-effective approaches for biologically interesting molecules and provides an efficient platform for the investigation of untapped reactions at high temperature.
BERGMAN, J.;EKLUND, N., CHEM. SCR., 1982, 20, N 5, 193-204
作者:BERGMAN, J.、EKLUND, N.
DOI:——
日期:——
Ultraviolet Absorbent and Heterocyclic Compound
申请人:Amasaki Ichiro
公开号:US20090239982A1
公开(公告)日:2009-09-24
An ultraviolet absorbent represented by the following Formula (1) or (6):
wherein, Het
1
represents a monovalent five- or six-membered aromatic heterocyclic residue; X
a
and X
b
each independently represent a heteroatom; Y
a
to Y
c
each independently represent a heteroatom or a carbon atom; the ring formed from carbon atom, X
a
, X
b
, Y
a
to Y
c
may have a double bond at any position and has at least one fused ring;
wherein, Het
6
represents a monovalent five- or six-membered aromatic heterocyclic residue; X
6a
and X
6b
each independently represent a heteroatom; Y
6a
, Y
6b
and Y
6c
each independently represent a heteroatom or a carbon atom; L
6
represents a bi- to octa-valent connecting group; n is an integer of 2 or more, and m is an integer of 0 or more.