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:Pradipta Kumar Basu , Amrita Ghosh
来源:[J].Journal of the Iranian Chemical Society(IF 1.467), 2013, Vol.10 (1), pp.55-62Springer
摘要:... The tributyltin hydride-mediated radical cyclisation of 6(a–k) was carried out under MWI to generate 1 H ,3 H ,6 H [2]benzopyrano[4,3- d ]pyrimidine-2,4-diones 7(a–k) in 80–89 % yield, and the reaction time was shortened compared to the previously reported convention...
作者:Philipp Röse , Steffen Emge , Jun-ichi Yoshida ...
来源:[J].Beilstein Journal of Organic Chemistry(IF 2.801), 2015, Vol.11 (1), pp.174-183DOAJ
摘要:The cobalt(I)-catalysed 1,4-hydrovinylation reaction of allyloxytrimethylsilane and allyl alcohol with substituted 1,3-dienes leads to hydroxy-functionalised 1,4-dienes in excellent regio- and diastereoselective fashion. Those 1,4-dienols can be converted into tetrahydrofuran and...
作者:Lachlan D. Rash , Glenn F. King , Paul F. Alewood ...
来源:[J].Marine Drugs(IF 3.978), 2012, Vol.10 (7), pp.1511-1527DOAJ
摘要:... In this study we determined the susceptibility of wild-type APETx2 to trypsin and pepsin and tested the applicability of backbone cyclisation as a strategy to improve its resistance to enzymatic degradation. Cyclisation with either a six-, seven- or eight-residue linker vastl...
作者:Rajeev K Shrivastava , Elise Maudru , Gurdial Singh ...
来源:[J].Beilstein Journal of Organic Chemistry(IF 2.801), 2008, Vol.4 (1), pp.43DOAJ
摘要:... These were converted to the corresponding iodides which underwent 6- exo - dig radical cyclisation to afford chiral cyclohexanes and carbasugars. Oxidation of the primary alcohols 6a– b gave the corresponding aldehydes which on treatment with Grignard reagents afforded a m...
来源:[J].Beilstein Journal of Organic Chemistry(IF 2.801), 2008, Vol.4 (1)DOAJ
摘要:... These were converted to the corresponding iodides which underwent 6- exo - dig radical cyclisation to afford chiral cyclohexanes and carbasugars. Oxidation of the primary alcohols 6a– b gave the corresponding aldehydes which on treatment with Grignard reagents afforded a m...
作者:Heloise Brice , Jonathan Clayden , Stuart D. Hamilton
来源:[J].Beilstein Journal of Organic Chemistry(IF 2.801), 2010, Vol.6 (1), pp.22DOAJ
摘要:The silyl enol ether derivatives of ketones or esters tethered by a hydrocarbon or ether linkage to the 3-position of a pyridine ring undergo dearomatising nucleophilic attack on the ring once it is activated (as an acylpyridinium species) by the addition of methyl chloroformate....
作者:Emilia Kowalska , Piotr Bałczewski
来源:[J].Ultrasonics - Sonochemistry(IF 3.516), 2017, Vol.34, pp.743-753Elsevier
摘要:Abstract(#br)The present work describes the first use of ultrasounds in the Bradsher cyclisation of activated and non-activated ortho -formyl diarylmethanes. This reaction is also the first example of electrophilic, aromatic cyclisation assisted by ultrasounds which leads to pure...
作者:Abil Aliev , James C. Anderson , Mérina K. Corpinot ...
来源:[J].Tetrahedron(IF 2.803), 2018Elsevier
摘要:... They were subjected to radical denitration-cyclisation with a 10 equivalent excess of tributyltin hydride, catalytic AIBN in refluxing benzene to explore the structural and electronic requirements for efficient cyclisation. Cyclisations of the β-nitroacetamides were succe...
作者:Geetha Gopalakrishnan , Viswanathan Kasinath , N. D. Pradeep Singh ...
来源:[J].Molecules(IF 2.428), 2000, Vol.5 (6), pp.880DOAJ
摘要:A tandem demethylation-cyclisation reaction resulting in the formation of pyran rings using AlCl3/EtSH reagent under mild reaction conditions is reported. X-ray diffraction studies on the intermediate support the suggested mechanism.
作者:Heloise Brice , Jonathan Clayden , Stuart D. Hamilton
来源:[J].Beilstein Journal of Organic Chemistry(IF 2.801), 2010, Vol.6 (1)DOAJ
摘要:The silyl enol ether derivatives of ketones or esters tethered by a hydrocarbon or ether linkage to the 3-position of a pyridine ring undergo dearomatising nucleophilic attack on the ring once it is activated (as an acylpyridinium species) by the addition of methyl chloroformate....

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