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:Peiming Gu , Xiu-Ping Wu , Yan Su ...
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:An efficient intermolecular interception of alkyl azides by diazo(aryl)acetates was achieved in the presence of dirhodium tetraoctanoate. The initial products were unstable α-imino esters, and overaddition of carbenoids to the C–N double bonds was avoided. After acidic worku...
作者:Amir Isfahani , Iraj Mohammadpoor-Baltork , Valiollah Mirkhani ...
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:A wide variety of diaryl sulfides has been synthesized in excellent yields via C–S cross-couplings of aryl/heteroaryl halides with aromatic/heteroaromatic thiols in the presence of palladium nanoparticles immobilized on nanosilica triazine dendritic polymer (Pdnp-nSTDP) as a...
作者:Ruhima Khan , Thokchom Singh , Moirangthem Singh
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:The regioselectivity in the Diels–Alder reaction of 9-substituted anthracenes having electron-releasing substituents with citraconic anhydride has been investigated. The ortho regioisomer is preferred in all the cases with good yield. The reaction proceeded best under conven...
作者:Pravinkumar Mohite , Pavel Drabina , Filip Bureš
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:Starting from essential α-amino acids, four new benzo[d]imidazole and alkyl-chain-substituted primary amines were synthesized. The reaction sequence involves activation of the Boc-amino acid carboxylic acid, reaction with o-phenylenediamine, and subsequent cyclization to ben...
作者:Gundeboina Narasimha , Batthula Srinivas , Palakodety Radha Krishna ...
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:A mild, catalytic, and efficient protocol has been developed for the synthesis of 2,3-unsaturated glycosides or ‘pseudo-glycals’ using Zn(OTf)2. Stereoselective glycosylation of glycal donor with various acceptors comprising of alcohols, phenols, thiols, and sugar aglycones ...
作者:Stéphanie Ortial , Rajesh Dave , Zohra Benfodda ...
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:The diastereoselective synthesis of cis-5-trifluoromethylproline (5-Tfm-Pro) from l-glutamic acid is described. 5-Tfm-Pro could be obtained through a seven-step linear sequence. Trifluoromethylation of the glutamic-derived ester or aldehyde and subsequent reduction of the cyclic ...
作者:Long Wang , Zhi-Lin Ren , Min Chen ...
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:2,4,5-Trisubstituted oxazoles were prepared via a tandem Passerini three-component coupling/Staudinger/aza-Wittig/isomerization reaction in one-pot fashion, starting from easily accessible α-azidocinnamaldehydes, acids, isocyanide and triphenylphosphine.
作者:Anup Bhunia , Akkattu Biju
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:Transition-metal-free multicomponent reactions involving arynes, N-heterocycles, and various carbonyl compounds have been reported. With (iso)quinoline as the nucleophile and carbonyl compounds, such as aldehydes, ketones, and N-substituted isatins as electrophiles, the reaction ...
作者:Vishnu Srivastava , Arvind Yadav , Lal Yadav
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:A new and efficient approach for the Beckmann rearrangement is reported. The protocol involves eosin Y catalyzed, visible-light-mediated in situ formation of the Vilsmeier–Haack reagent from CBr4 and a catalytic amount of DMF for activation of ketoximes at room temperature. ...
作者:Hai Tong , Bo Liu
来源:[J].Synlett(IF 2.655), 2014, pp.-Thieme
摘要:Functionalized 2-pyrone was synthesized from a known compound through an eight-step reaction sequence. Diels–Alder cycloadditions of this 2-pyrone were investigated, manifesting its ambident property with a series of electronically and sterically distinct dienophiles.

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