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.
Highly Efficient and Versatile Pd-Catalyzed Direct Alkynylation of Both Azoles and Azolines
作者:Seok Hwan Kim、Sukbok Chang
DOI:10.1021/ol100488v
日期:2010.4.16
A highly efficient and versatile Pd-catalyzed directalkynylation reaction of heterocycles with 1-bromoalkynes was developed. The substrate scope of the reaction was very broad to include not only azoles but also azolines for the first time, thus offering an important advance in the direct functionalization of heterocycles.
Palladium-Catalyzed Oxidative Alkynylation of Heterocycles with Terminal Alkynes under Air Conditions
作者:Seok Hwan Kim、Jungho Yoon、Sukbok Chang
DOI:10.1021/ol200154s
日期:2011.3.18
Pd-Catalyzed oxidative alkynylation of azoles with terminal alkynes was developed via simultaneous activation of both heterocyclic sp(2) C-H and alkynyl sp C-H bonds. The choice of palladium catalyst source and external base resulted in being important factors for performing the reaction with high efficiency and selectivity, and air was successfully utilized as an environmental oxidant in the present alkynylation procedure.
Dehydrogenative and decarboxylative C–H alkynylation of heteroarenes catalyzed by Pd(II)–carbene complex
作者:Thupakula Parsharamulu、Police Vishnuvardhan Reddy、Pravin R. Likhar、Mannepalli Lakshmi Kantam
DOI:10.1016/j.tet.2015.02.020
日期:2015.4
The direct alkynylation of heteroarenes was accomplished with easily prepared Pd(II) carbene complex (Pd Cat.) by two complementary strategies. Pd Cat. catalysed cross-dehydrogenative coupling of terminal alkynes with heteroarenes was achieved in the first method and decarboxylative coupling of aryl propiolic acids with heteroarenes was investigated in the second method. Both the methodologies tolerate a broad variety of heteroarenes that include benzoxazoles, benzothiazoles, imidazole and benzimidazoles. (C) 2015 Elsevier Ltd. All rights reserved.