• Bulletin of the Korean Chemical Society
• /
• 제9권1호
• /
• pp.30-32
• /
• 1988

Symmetrical diaryl ${\alpha}-diketones$ were synthesized in moderately good yields through the palladium catalyzed reaction of aryl iodides with carbon monoxide. The reaction was tolerant of a wide variety of fuctionalities($OCH_3,\;CH_3,\;NO_2,\;OH,\;COOH$) on the aryl iodide. On the other hand, the similar reaction of aryl bromides or chlorides with carbon monoxide did not proceed.

• 대한화학회지
• /
• 제58권1호
• /
• pp.39-43
• /
• 2014

A facile transformation of aryl aldehydes to benzyl iodides through one-pot reductive iodination is reported. This protocol displays remarkable functional group tolerance and the title compound was obtained in good to excellent yield.

• 공업화학
• /
• 제32권2호
• /
• pp.224-227
• /
• 2021

A rapid and selective copper-catalyzed amination of aryl halides with sodium azide was established by using 10 mol % of CuI, and 20 mol % of N,N'-dimethylethylenediamine in DMSO under microwave irradiation for 10 min. The catalytic system with 4-substituted aryl iodides was found to be the most effective leading to a nearly complete conversion.

• Bulletin of the Korean Chemical Society
• /
• 제8권4호
• /
• pp.246-250
• /
• 1987

The reaction of aryl iodides or bromides with olefins in the presence of 1 mol % of $PdCl_2(PPh_3)_2$ and 3 equiv. of $n-Bu_3N\; at\; 100^{\circ}C$ in carbon monoxide atmosphere gave the corresponding aryl vinyl ketones in good yields with small amount of vinylated 1-aryl olefins. But, when the reaction was proceeded under the 10 atm of carbon monoxide, aryl vinyl ${\alpha}$-diketones and aryl vinyl ketones were obtained in moderate to good yields. The reaction was tolerant of a wide variety of functional groups on either the aryl halides or olefin compounds. Reactivity of aryl halide decrease in the order; aryl iodide > aryl bromide ${\gg}$aryl chloride. In general, the reaction proceeded well and gave good yields of aryl vinyl ketones and aryl vinyl ${\alpha}$-diketones when reactants are substituted with electron withdrawing groups.

• Bulletin of the Korean Chemical Society
• /
• 제23권12호
• /
• pp.1823-1826
• /
• 2002

• 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
• /
• 제32권3호
• /
• pp.1080-1082
• /
• 2011

• 공업화학
• /
• 제19권6호
• /
• pp.629-632
• /
• 2008

N-Arylation에 대한 경제적이고 실용적인 촉매시스템을 찾기 위하여 indole을 이용한 다양한 반응조건에서 실험이 수행되었으며, 결과적으로 본 연구에서 처음 시도한 copper nitrate와 copper cabonate가 다른 copper계 촉매나 palladium 촉매에 유사하거나 더 우수한 반응성을 보여주었다. Copper nitrate 촉매를 사용하는 경우에는 다양한 리간드 중에서 N,N'-dimethylethylenediamine 리간드가 더 효과적이었으며 copper cabonate 계에서는 ethylenediamine 리간드가 더 적합한 것으로 판명되었다.

• 대한화학회지
• /
• 제40권9호
• /
• pp.615-622
• /
• 1996

1-(Benzotriazol-1-yl)-1-benzenesulfonylmethane 1a에 LDA 및 methyl iodide를 작용시켜 1-(Benzotriazol-1-yl)-1-benzenesulfonylmethane 2a와 2-(Benzotriazol-1-yl)-2-benzenesulfonylpropane 2b를 각각 얻었다. 같은 방법으로 1-(Benzotriazol-1-yl)-1-benzenesulfonylmethane 1b로부터 1-(Benzotriazol-1-yl)-1-benzenesulfonylpropane 3a와 3-(Benzotriazol-1-yl)-3-benzenesulfonylpentane 3b를 얻었다. 한편, 1, 1-di(benzotriazol-1-yl)-1-arylmethane 4를 butyl lithiym과 diphenyl disulfide로 처리하여 1, 1-di(benzotriazol-1-yl)-1-aryl-1-thiophenoxymethane 5를 합성하였다. 1, 1-di(benzotriazol-1-yl)methane 8을 butyl lithiym과 diphenyl disulfide로 처리하여 1, 1-di(benzotriazol-1-yl)-1-thiophenoxymethane 9a와 1, 1-di(benzotriazol-1-yl)-1, 1-dithiophenoxymethane 9b를 각각 얻었다. 화합물 9a를 m-CPBA로 산화시켜 1, 1-di(benzotriazol-1-yl)-1-benzenesulfoxymethane 10a와 1, 1-di(benzotriazol-1-yl)-1-benzenesulfonylmethane 10b를 얻었다. 한편, 화합물 3b를 170.deg.C 에서 열분해시켜 3-toluenesulfonyl-2-pentene 11ㅇ르 얻었으며, 150.deg.C의 강철봄베속에서 3b를 과량의 물로 가수분해 시켰더니 sulfone의 C-N 및 C-S 결합 모두가 절단된 diethyl ketone 13a가 생성됨을 확인하였다.