全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Tai-Ran Kang , Ting-Ting Yan , Jie Liu ...
来源:[J].Molecules(IF 2.428), 2011, Vol.16 (10), pp.8745-8757DOAJ
摘要:An efficient synthesis of functionalized spiropyrrolizidine oxindoles via a three-component tandem cycloaddition has been achieved. This strategy can provide direct and rapid access to spiropyrrolizidine oxindoles in high yields (up to 99%) with excellent diastereoselectivities (...
作者:Tai-Ran Kang , Yu Cheng , Long He ...
来源:[J].Tetrahedron Letters(IF 2.397), 2012, Vol.53 (20), pp.2552-2555Elsevier
摘要:Abstract(#br)A new tandem cycloaddition between proline and β,γ-unsaturated α-keto esters was disclosed. Highly functional and diastereomerically pure pyrrolizidine derivatives were obtained in moderate to high yields.
作者:Yoon-Jung Kim , Yeokwon Yoon , Hee-Yoon Lee
来源:[J].Tetrahedron(IF 2.803), 2013, Vol.69 (36), pp.7810-7816Elsevier
摘要:Abstract(#br)A stereoselective total synthesis of (+)-pentalenene was achieved through the tandem cycloaddition reaction of the allenyl diazo substrate prepared from (+)-citronellal. The initial intramolecular [2+3] cycloaddition reaction between the diazo functionality and the a...
作者:Dr. Hongsoo Lee , Dr. Taek Kang , Prof. Dr. Hee‐Yoon Lee
来源:[J].Angewandte Chemie International Edition(IF 13.734), 2017, Vol.56 (28), pp.8254-8257Wiley
摘要:Abstract(#br)The first total synthesis of waihoensene, a tetracyclic diterpene containing an angular triquinane and a six‐membered ring, with four contiguous quaternary carbon atoms, was achieved through the tandem cycloaddition reaction of an allenyl diazo substrate conta...
作者:Yong Xin , Jingwei Zhao , Jianwei Han ...
来源:[J].Journal of Fluorine Chemistry(IF 1.939), 2010, Vol.131 (5), pp.642-645Elsevier
摘要:Abstract(#br)A convenient lithium bromide/triethylamine promoted tandem cycloaddition–oxidation reaction was developed to afford 3-trifluoroacetyl pyrroles in moderate to good yields from N-alkylidene 2-amino esters and β-trifluoroacetyl vinyl ethyl ether.
作者:Sang‐Shin Lee , Won‐Yeob Kim , Prof. Dr. Hee‐Yoon Lee
来源:[J].Chemistry – An Asian Journal(IF 4.572), 2012, Vol.7 (10), pp.2450-2456Wiley
摘要:Abstract(#br)Total synthesis of ceratopicanol ( 1 ) was achieved with a tandem cycloaddition reaction of allenyl diazo compound 6 via a trimethylenemethane (TMM) diyl intermediate. The TMM diyl mediated [2+3] cycloaddition reaction furnished the consecutive quaternary carbon cent...
作者:Yong-Mei Xie , Yu-Qin Yao , Hong-Bao Sun ...
来源:[J].Molecules(IF 2.428), 2011, Vol.16 (10), pp.8745-8757MDPI
摘要:An efficient synthesis of functionalized spiropyrrolizidine oxindoles via a three-component tandem cycloaddition has been achieved. This strategy can provide direct and rapid access to spiropyrrolizidine oxindoles in high yields (up to 99%) with excellent diastereoselectivities (...
作者:Mohammed Rahif , Maryline Roux , Jérôme Thibonnet ...
来源:[J].Molecular Diversity(IF 2.861), 2013, Vol.17 (1), pp.49-53Springer
摘要:... A Peterson-type $$\gamma $$ -elimination promoted by a catalytic amount of trimethylsilyl triflate cross-conjugated gave triene systems ([3]dendralene) which rapidly reacted with the appropriate dienophiles to yield tandem intermolecular Diels-Alder cycloadducts.
作者:Scott E. Denmark , Ramil Y. Baiazitov , Son T. Nguyen
来源:[J].Tetrahedron(IF 2.803), 2009, Vol.65 (33), pp.6535-6548Elsevier
摘要:... The synthesis features a tandem, double intramolecular, [4+2]/[3+2] cycloaddition of a highly functionalized, enantiomerically enriched nitroalkene to generate a pentacyclic nitroso acetal. The cycloaddition establishes six contiguous stereogenic centers including the critica...

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