申请人:KNU-Industry Cooperation Foundation 강원대학교산학협력단(220040088571) BRN ▼221-82-10213
公开号:KR20150014210A
公开(公告)日:2015-02-06
본 발명은 하기 화학식 1로 표시되는 알키닐레이션(alkynylation) 된 벤즈옥사졸(benzoxazole) 유도체의 제조방법에 관한 것으로, 보다 상세하게는, 팔라듐 촉매, 포스핀계 리간드로 1,3-bis(diphenylphosphino)propane 존재 하에서 은염(silver salt), 프로피올릭 산(propiolic acid) 및 벤즈옥사졸 화합물을 반응시켜 알키닐레이션(alkynylation) 된 벤즈옥사졸 유도체의 제조방법에 관한 것이다.
Palladium-Catalyzed Decarboxylative C-H Alkynylation of Benzoxazoles with α,β-Ynoic Acids
作者:Jinsik Kim、Dongjin Kang、Eun Jeong Yoo、Phil Ho Lee
DOI:10.1002/ejoc.201301441
日期:2013.12
Palladium-catalyzeddecarboxylativeC–Halkynylation of benzoxazoles with α,β-ynoicacids was achieved for the first time. This straightforward method was found to be synthetically effective without strong base under air.
The direct C−H alkynylation of azoles with terminal alkynes proceeds efficiently under a nickel/O2 catalytic system. On the other hand, a copper/air catalyst enables the coupling of polyfluoroarenes with terminal alkynes. These catalyses provide new accesses to arylacetylenes through the formal direct Sonogashira coupling.
在镍/ O 2催化体系下,唑类与末端炔烃的直接CH炔基化反应有效进行。另一方面,铜/空气催化剂能够使多氟芳烃与末端炔烃偶联。这些催化剂通过正式的直接Sonogashira偶联为芳基乙炔提供了新的途径。
Nickel-Catalyzed Direct Alkynylation of Azoles with Alkynyl Bromides
The direct C−H alkynylation of azoles with alkynyl bromides proceeds efficiently in the presence of a nickel-based catalyst system. The reaction enables the introduction of various alkynyl groups bearing aryl, alkenyl, alkyl, and silyl substituents to the azole cores. In some cases, addition of a catalytic amount of CuI is observed to accelerate the direct coupling dramatically.
Palladium-Catalyzed Direct C–H Bond Alkynylations of Heteroarenes Using <i>gem</i>-Dichloroalkenes
作者:Lutz Ackermann、Christoph Kornhaass、Yingjun Zhu
DOI:10.1021/ol300514d
日期:2012.4.6
Palladium-catalyzed direct alkynylations of heteroarenes were accomplished with inexpensive gem-dichloroalkenes as user-friendly electrophiles, which set the stage for a modular, step-economical synthesis of diversely decorated heteroaryl alkynes with ample scope.