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.
Microwave-accelerated, palladium-catalyzed carbonylative cyclization reactions of 2-iodophenol with alkynes Rapid and efficient synthesis of chromen-2-one derivatives
作者:Hong Cao、Wen-Jing Xiao
DOI:10.1139/v05-094
日期:2005.6.1
Rapid palladium-catalyzed carbonylative cyclization reactions of 2-iodophenol with various alkynes have been carried out by the use of commercially available molybdenumhexacarbonyl as a convenient and solid carbonmonoxidesource. The reactions were conducted at 160 °C for 30 min with microwave heating in the presence of DIEA and DMAP in 1,4-dioxane, and afford the corresponding chromen-2-one derivatives
Alkylative carbonyl transposition of dihydro-α-pyrones to dihydro-α-pyrones
作者:A. Nangia、P.Bheema Rao
DOI:10.1016/s0040-4039(00)77655-6
日期:1993.4
Dihydro-α-pyrones (2) are prepared from β-hydroxy ketones (1). Dihydropyrones (2) are transformed to unsaturated δ-lactones (4) via an alkylative 1,3-carbonyl transposition.
Palladium-catalyzed carbonylative annulation of terminal alkynes: synthesis of coumarins and 2-quinolones
作者:Dmitry V Kadnikov、Richard C Larock
DOI:10.1016/s0022-328x(03)00786-1
日期:2003.12
o-Iodophenols and o-iodoaniline derivatives react with terminalalkynes under 1 atm of CO in the presence of pyridine and catalytic amounts of Pd(OAc)2 to generate coumarins and 2-quinolones, respectively, as the only products. Terminalalkynes bearing alkyl, aryl, silyl, hydroxyl, ester and cyano substituents are effective in these processes affording the desired products in moderate yields. The formation
[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.