全部文献期刊会议图书|学者科研项目
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作者:Jens K Winkler , Werner Karow , Paul Rademacher
来源:[J].Journal of Analytical and Applied Pyrolysis(IF 2.56), 2001, Vol.57 (1), pp.133-144
摘要:... Only from 3 , small amounts of larger oxygen containing polycyclic hetarenes (PHAs), such as benzo[b]naphtho[2,3-d]furan ( 37 ) and benzo[1,2-b:4,5-b′]bis[1]benzofuran ( 36 ), are generated as additional products besides PAHs.
作者:V. I. Boev , A. I. Moskalenko , S. L. Belopukhov ...
来源:[J].Russian Journal of Organic Chemistry(IF 0.513), 2017, Vol.53 (2), pp.169-177
摘要:Reactions of arylacetic acids with N -methoxymethanamine afford corresponding Weinreb amides which at alkenylation with methallyl and prenyl bromides in the presence of (Me3Si)2NNa+ form unsaturated amides ArCHRCONMe(OMe) (R = CH<...
作者:Carlotta Raviola
来源:[J].Synlett(IF 2.655), 2019, pp.-
摘要:Abstract The C–H to C–C conversion in aliphatic oxygen heterocycles (dioxolanes, 1,3-dioxane, or cyclic carbonates) by photocatalytic hydrogen atom transfer and subsequent trapping of the resulting radical with phenyl vinyl sulfone was investigated. The performance of thr...
作者:A.K. Ganguly , P.K. Mahata , D. Biswas
来源:[J].Tetrahedron Letters(IF 2.397), 2005, Vol.47 (8), pp.1347-1349
摘要:... Convenient synthesis of other oxygen heterocycles using similar procedure have been outlined.
作者:Swapan Majumdar , Ranjan Mukhopadhyay , Anup Bhattacharjya
来源:[J].Tetrahedron(IF 2.803), 2000, Vol.56 (45), pp.8945-8951
摘要:Abstract(#br)Chiral 10 to 12-membered nitrogen and oxygen heterocycles fused to isoxazoline rings have been prepared in a highly regioselective and stereoselective manner by intramolecular nitrile oxide cycloaddition of tethered N - and O -allyl carbohydrate derivatives. The...
作者:Navjeet Kaur
来源:[J].Synthetic Communications(IF 1.06), 2019, Vol.49 (13), pp.1679-1707
摘要:... The aim of present review is to focus on the applications of ionic liquids for the synthesis of fused six-membered oxygen heterocycles.
作者:Natalia M. Padial , Carmen Hernández‐Cervantes , Juan Muñoz‐Bascón ...
来源:[J].European Journal of Organic Chemistry(IF 3.344), 2017, Vol.2017 (3), pp.639-645
摘要:A general method for the straightforward synthesis of exocyclic allenes on five‐, six‐, seven‐, and eight‐membered oxygen heterocycles is described. A Barbier‐type titanocene(III)‐catalyzed cyclization of propargyl halides with a pendant carbonyl group is the key ...
作者:Heng Chen , Jiexiong Wang , Jingjing Wu ...
来源:[J].Journal of Fluorine Chemistry(IF 1.939), 2017, Vol.200, pp.41-46
摘要:Abstract(#br)A convenient and facile method for the direct synthesis of α,α-difluorobenzoyl lactones or cyclic ethers via the radical cyclization reaction of 2-iodo-2,2-difluoroacetophenone with unsaturated acids or alcohols was reported.
作者:Shasha Quan , Yuanyuan Wang , Kewen Zheng ...
来源:[J].Tetrahedron Letters(IF 2.397), 2015, Vol.56 (1), pp.215-217
摘要:Abstract(#br)Hydrative cyclization of 1,6-allenyne catalyzed by simple RhCl 3 in aqueous solvent is described. This reaction proceeds in rarely reported fashion of 6-endo cyclization and provides a facile access to 5,6-dihydropyrans and 3,4-dehydropiperidines from acyclic substra...

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