申请人:National Tsing Hua University
公开号:US20200308101A1
公开(公告)日:2020-10-01
A method for producing a homocyclic or heterocyclic compound includes reacting a compound of formula (I) with a compound of formula (II) in presence of a base:
In formula (I), B is an unsaturated moiety selected from substituted or unsubstituted vinylene, ethynylene, aryleneethynylene, substituted or unsubstituted arylenevinylene, and a combination thereof, the vinylene or arylenevinylene has n (=0, 1 or 2) substituent(s) R
2
, G is an electron-withdrawing group, R
1
is hydrogen or a substituent, and two of R
1
, R
2
and G may joint together to form a ring. In formula (II), R
3
and R
4
are independently hydrogen or a substituent, R
5
is an electron-withdrawing group, and two of R
3
, R
4
and R
5
may joint together to form a ring. The conjugate acid of the base has a pK
a
in the range of 1 to 15.
一种制备同环或异环化合物的方法,包括在碱存在下将式(I)化合物与式(II)化合物反应:在式(I)中,B是选自取代或未取代的乙烯基、乙炔基、芳基乙炔基、取代或未取代的芳基乙烯基和其组合的不饱和基团,乙烯基或芳基乙烯基具有n(= 0、1或2)个取代基R2,G是电子吸引基团,R1是氢或取代基,而R1、R2和G中的两个可以结合形成环。在式(II)中,R3和R4独立地是氢或取代基,R5是电子吸引基团,而R3、R4和R5中的两个可以结合形成环。碱的共轭酸在pKa范围为1到15之间。