开发了一种有效的多米诺方法,该方法使用铜催化剂和易于获得的黄原酸酯作为硫代用品,以高收率从2-碘酮合成各种取代的2,3-二氢苯并[ b ]噻吩。该多米诺法已得到扩展,可利用副产物KI的原位生成的碘(I 2)高产率地合成2-酰基苯并[ b ]噻吩。用铜(II)催化剂处理黄药可能将其还原为铜(I)催化剂,从而启动催化循环。根据XPS分析,碘色测试和其他几个对照实验的结果,提出了一种可能的机制。
[EN] ALLOSTERIC PROTEIN KINASE MODULATORS<br/>[FR] MODULATEURS DE PROTÉINE KINASE ALLOSTÉRIQUE
申请人:UNIV SAARLAND
公开号:WO2010043711A1
公开(公告)日:2010-04-22
The invention provides specific small molecule compounds that allosterically regulate the activity or modulate protein-protein interactions of AGC protein kinases and the Aurora family of protein kinases, methods for their production, pharmaceutical compositions comprising same, and their use for preparing medicaments for the treatment and prevention of diseases related to abnormal activities of AGC protein kinases or of protein kinases of the Aurora family.
The invention provides specific small molecule compounds that allosterically regulate the activity or modulate protein-protein interactions of AGC protein kinases and the Aurora family of protein kinases, methods for their production, pharmaceutical compositions comprising same, and their use for preparing medicaments for the treatment and prevention of diseases related to abnormal activities of AGC protein kinases or of protein kinases of the Aurora family.
Synthesis of 2-Acylbenzo[<i>b</i>]thiophenes via Cu-Catalyzed α-C–H Functionalization of 2-Halochalcones Using Xanthate
作者:Subramani Sangeetha、Govindasamy Sekar
DOI:10.1021/acs.orglett.7b00462
日期:2017.4.7
An efficient protocol is described for the synthesis of 2-acylbenzo[b]thiophenes from easily accessible 2-iodochalcones through α-C–H functionalization using Cu(OAc)2 catalyst and xanthate as sulfur source. Less reactive 2-bromochalcones also yielded the corresponding 2-acylbenzothiophenes in good yield. The reaction proceeds via in situ incorporation of sulfur followed by copper-catalyzed cyclization
描述了一种有效的规程,用于使用Cu(OAc)2催化剂和黄原酸酯作为硫源,通过α-C–H官能化,从易于获得的2-碘对二苯并呋喃中合成2-酰基苯并[ b ]噻吩。反应性较低的2-溴查耳酮也以良好的产率产生相应的2-酰基苯并噻吩。该反应通过硫的原位结合进行,然后进行铜催化的环化反应,生成没有外部酰基源的2-酰基苯并噻吩。合成的重要性通过1-(5-羟基苯并噻吩-2-基)乙酮的合成得到了展示,这是一种已知的mRNA前剪接调节剂。
DIPEA-Promoted Reaction of 2-Nitrochalcones with Elemental Sulfur: An Unusual Approach to 2-Benzoylbenzothiophenes
作者:Thanh Binh Nguyen、Pascal Retailleau
DOI:10.1021/acs.orglett.7b02321
日期:2017.9.15
DIPEA was found to be an excellent sulfur activator to promote the reaction of 2-nitrochalcones with elementalsulfur. A wide range of 2-benzoylbenzothiophenes was obtained as a result of a cascade of alkene C═C bond thiolation, aromatic sulfur-denitration.
A method was developed for the synthesis of 2-acylbenzo[b]thiophenes via a copper-catalyzed sulfuration of 3-(2-iodophenyl)-1-arylpropan-1-ones with K2S.