申请人:KNU-Industry Cooperation Foundation 강원대학교산학협력단(220040088571) BRN ▼221-82-10213
公开号:KR20150090845A
公开(公告)日:2015-08-06
본 발명은 철 촉매 및 염기 첨가제를 이용한 4-치환 쿠마린 유도체의 제조방법에 관한 것으로서, 4-치환 쿠마린 설파메이트를 출발물질로 하고, 이를 그리나드 시약과 커플링 반응을 통해 4-번 위치에 다양한 관능기를 갖는 4-치환 쿠마린 유도체를 짧은 시간에 부산물의 생성을 최소화하면서 높은 수율로 제조할 수 있는 방법에 관한 것이다.
Rhodium(I)-Catalyzed Decarbonylative Aerobic Oxidation of Cyclic α-Diketones: A Regioselective Single Carbon Extrusion Strategy
作者:Gangadhararao Golime、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.7b03837
日期:2018.2.16
rhodium-catalyzed decarbonylative aerobic oxidation of cyclic α-diketones has been developed for the first time, where the regioselective formations of α-pyrones and isocoumarins have been achieved. The current decarbonylative aerobic oxidation pathway proceeds via the C–C bond cleavage followed by a C–O bond formation, representing a biomimetic oxidation approach to unsaturated six-membered cyclic
[Pd(PPh3)2(saccharinate)2]—general catalyst for Suzuki–Miyaura, Negishi cross-coupling and C–H bond functionalization of coumaryl and pyrone substrates
作者:Parin Shah、M. Dolores Santana、Joaquín García、J. Luis Serrano、Minal Naik、Suhas Pednekar、Anant R. Kapdi
DOI:10.1016/j.tet.2012.12.030
日期:2013.2
The potential of complex [Pd(PPh3)(2)(saccharinate)(2)] 1 in catalyzing Suzuki-Miyaura cross-coupling of 4-halo and 4-bromomethyl coumaryl and pyrone substrates with different aryl boronic acids has been explored. Excellent yields of the desired products are obtained in competitive reaction time and under relatively mild conditions. Negishi cross-coupling of 4-coumaryl tosylate with aryl and allcylzinc reagents has also been performed with good yields of the cross-coupled products obtained in most cases. Intramolecular C-H bond functionalization of coumaryl ethers also furnished very high yields of synthetically attractive tetracyclic ring systems exhibiting the potential of I as a powerful catalyst in synthetically important reactions. (C) 2012 Elsevier Ltd. All rights reserved.
Nickel-Catalyzed Cross-Couplings of 4-Diethylphosphonooxycoumarins with Organozinc Reagents: An Efficient New Methodology for the Synthesis of 4-Substituted Coumarins
作者:Jie Wu、Zhen Yang
DOI:10.1021/jo010452+
日期:2001.11.1
6-AMINO-1,2-BENZOPYRONES USEFUL FOR TREATMENT OF VIRAL DISEASES