不对称功能化的4 H -Cyclopenta [2,1- b:3,4- b' ]二噻吩的三步合成方法
摘要:
已经开发了一种方便有效的向对称和不对称官能化的4 H-环戊[2,1- b:3,4- b ']二噻吩进行三步反应的途径。使用此方法,可以顺利访问功能化的桥接联噻吩的广泛集合。由3-噻吩-2-2,2'-联噻吩开始,在Pd(dppf)Cl 2催化下,2-噻吩基溴化镁与2,3-二溴噻吩的Kumada偶联制备,锂化并随后与二烷基酮反应,得到(a)对称的二烷基化叔醇衍生物。通过在硫酸介质中的最终Friedel-Crafts脱水环化反应,将这些衍生物转化为4,4-二烷基-4 H-环戊[2,1- b:3,4- b ']二噻吩。用乙酰丙酸乙酯代替二烷基酮试剂后,制备了酯官能化的4 H-环戊基[2,1- b:3,4- b ']二噻吩,它代表了各种官能化的环戊二噻吩化合物的有吸引力的前体。
4, 4' DISUBSTITUTED 4H-CYCLOPENTADITHIOPHENE AND NEW METHODS FOR SYNTHESISING THE SAME
申请人:Vanderzande Dirk
公开号:US20110313175A1
公开(公告)日:2011-12-22
The present preferred embodiments relate to a method for the synthesis of a compound having the following general formula:
the method comprising the step of reacting, in presence of a diprotic acid having a negative pKa, a compound having the general formula:
wherein R
1
and R
2
are organic groups and wherein X and Y are independently selected from the group consisting of hydrogen, chloro, bromo, iodo, boronic acid, boronate esters, borane, pseudohalogen and organotin. It further relates to compounds so obtained and to compounds resulting from the ring closure of compound (II).
PHOTOELECTRIC CONVERSION DEVICE AND SOLAR CELL USING THE SAME
申请人:AKIYAMA Seiji
公开号:US20120211082A1
公开(公告)日:2012-08-23
There is provides a photoelectric conversion device material which can be used as an electrode buffer material for a solar cell or the like and can improve durability while maintaining the interaction with an electrode and mobility; a photoelectric conversion device using the photoelectric conversion device material; and a solar cell using the photoelectric conversion device. A photoelectric conversion device containing a buffer layer and an active layer, wherein the buffer layer contains a compound represented by the following general formula (I), the active layer contains an n-type semiconductor, and the n-type semiconductor is a compound having a solubility in toluene of 0.5% by weight or more at 25° C. and having an electron mobility of 1.0×10
−6
cm
2
/Vs or more.
PHOTOELECTRIC CONVERSION ELEMENT AND SOLAR CELL USING SAME
申请人:Mitsubishi Chemical Corporation
公开号:EP2463929A1
公开(公告)日:2012-06-13
There is provides a photoelectric conversion device material which can be used as an electrode buffer material for a solar cell or the like and can improve durability while maintaining the interaction with an electrode and mobility; a photoelectric conversion device using the photoelectric conversion device material; and a solar cell using the photoelectric conversion device. A photoelectric conversion device containing a buffer layer and an active layer, wherein the buffer layer contains a compound represented by the following general formula (I), the active layer contains an n-type semiconductor, and the n-type semiconductor is a compound having a solubility in toluene of 0.5% by weight or more at 25°C and having an electron mobility of 1.0×10-6 cm2/Vs or more.