THIOPHENE COMPOUND HAVING SULFONYL GROUP AND PROCESS FOR PRODUCING THE SAME
申请人:Nissan Chemical Industries, Ltd.
公开号:EP1916244A1
公开(公告)日:2008-04-30
A thiophene compound having sulfonyl groups which is represented by the formula [1]. It has high heat resistance and high unsusceptibility to oxidation and can improve solubility and dispersibility in various solvents.
[In the formula, R1 and R2 each independently represents hydrogen, halogeno, cyano, etc.; and R3 and R3' each independently represents C1-20 alkyl, C1-20 haloalkyl, phenyl optionally substituted by W, thienyl optionally substituted by W, etc. (W represents chlorine, etc.).]
一种具有磺酰基的噻吩化合物,由式 [1] 表示。它具有较高的耐热性和较强的抗氧化性,并能提高在各种溶剂中的溶解性和分散性。
[式中,R1 和 R2 各自独立地代表氢、卤素、氰基等;R3 和 R3'各自独立地代表 C1-20 烷基、C1-20 卤代烷基、任选被 W 取代的苯基、任选被 W 取代的噻吩基等(W 代表氯等)。
One-Pot Desulfurative−Fluorination−Bromination. Synthesis of 2,5-Dibromo-3-(1,1-difluoroalkyl)thiophenes
作者:Nashaat Turkman、Lingling An、Martin Pomerantz
DOI:10.1021/ol101907k
日期:2010.10.1
A unique one-pot, high-yield desulfurative−fluorination−bromination reaction which leads to the synthesis of 2,5-dibromo-3-(1,1-difluoroalkyl)thiophenes is reported. A single dithiolane reactant can be used to produce both 2,5-dibromo-3-(1,1-difluoroalkyl)thiophene and 3-(1,1-difluoroalkyl)thiophene with longer alkyl chains.