• Bulletin of the Korean Chemical Society
• /
• 제32권spc8호
• /
• pp.2911-2915
• /
• 2011

Efficient synthetic method for the preparation of ethyl 2-aryl-2,3-alkadienoates through Pd-catalyzed selective allenyl cross-coupling reactions of aryl iodides with organoindiums generated in situ from indium and ethyl 4-bromo-2-alkynoate was developed. The cyclization reaction of ethyl 2-aryl-2,3-alkadienoates catalyzed by $AuCl_3$ and AgOTf in the presence of AcOH or TfOH produced various ${\alpha}$-aryl ${\gamma}$-butenolides or ${\gamma}$-substituted ${\alpha}$-aryl ${\gamma}$-butenolides.

• Bulletin of the Korean Chemical Society
• /
• 제34권9호
• /
• pp.2803-2806
• /
• 2013

• Bulletin of the Korean Chemical Society
• /
• 제20권5호
• /
• pp.503-504
• /
• 1999

• Bulletin of the Korean Chemical Society
• /
• 제17권12호
• /
• pp.1095-1096
• /
• 1996

• Bulletin of the Korean Chemical Society
• /
• 제17권12호
• /
• pp.1174-1176
• /
• 1996

• Bulletin of the Korean Chemical Society
• /
• 제27권10호
• /
• pp.1671-1673
• /
• 2006

• 약학회지
• /
• 제34권3호
• /
• pp.166-170
• /
• 1990

An efficient synthetic route to macrolide is described. Eight-membered lactone was synthesized via palladium catalyzed intramolecular alkylation of allylic carbonate in high yield.

• Bulletin of the Korean Chemical Society
• /
• 제17권9호
• /
• pp.826-830
• /
• 1996

Fourier transform infrared (FTIR) temperature studies were performed to examine the microstructural changes that occur in annealing process of the thin films of 1,2-polybutadiene (1,2-PBu)/palladium chloride (PdCl2) complex. The disappearance of the infrared absorption intensities at 1640, 1418, 994 and 910 cm-1 signifies the consumption of 1,2-vinyl groups of 1,2-PBu. The progressive loss of unsaturation and production of methyl groups as a function of temperature were identified by the enhanced infrared absorption intensities at 1447 and 1375 cm-1. The loss of pendent carbon-carbon double bond is considered to involve both palladium-catalyzed addition reaction and thermally induced cyclization.

• Bulletin of the Korean Chemical Society
• /
• 제22권11호
• /
• pp.1173-1174
• /
• 2001

• 대한화학회지
• /
• 제37권10호
• /
• pp.903-909
• /
• 1993

팔라듐(0, II)-포스핀계 착물을 촉매로 하여 crotonic acid, methacrylic acid 및 3-butenoic acid 같은 불포화가크복실산의 카르보닐화 고리반응에서 생성가능한 물질의 구조를 확인하고, 그 반응메카니즘을 MM2 와 EHMO 계산에 의해서 추정하였다. 이 반응은 ${\pi}$ -착물을 거쳐 금속 함유 고리화합물을 만든 다음 산화성 첨가반응과 환원성 제거반응이 일어나 진행된다. ${\pi}$ -착물을 안정화시키는 crotonic acid, methacrylic acid 등은 카르보닐화 고리반응이 진행되지 않고, 3-butenoic acid는 무수카르복실산 유도체로서 glutaric anhydride와 3-methylsuccinic anhydride 및 이중결합이 자리옮김된 crotonic acid가 얻어졌다.