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:Takashi Tsuji , Tomoaki Nakamura , Hideki Yorimitsu ...
来源:[J].Tetrahedron(IF 2.803), 2003, Vol.60 (4), pp.973-978Elsevier
摘要:Abstract(#br)Iodine–magnesium exchange occurs upon treatment of 3-iodomethyl-1-oxacyclopentanes with alkyl Grignard reagents or trialkylmagnesate. The resulting organomagnesium compounds undergo intramolecular nucleophilic substitution in ether to afford cyclopropane skele...
作者:Laure Boymond , Mario Rottländer , Gérard Cahiez ...
来源:[J].Angewandte Chemie International Edition(IF 13.734), 1998, Vol.37 (12), pp.1701-1703Wiley
摘要:Abstract(#br)At −40°C aryl iodides that contain other functional groups can be selectively converted into Grignard reagents, which react with electrophiles such as benzaldehyde in the usual manner [Eq. (a)]. Aryl bromides and iodides that are immobilized as esters on a Wang ...
作者:Viet Anh Vu , Laurent Bérillon , Paul Knochel
来源:[J].Tetrahedron Letters(IF 2.397), 2001, Vol.42 (39), pp.6847-6850Elsevier
摘要:Abstract(#br)5-Magnesiated-1,3-dioxin-4-ones have been prepared by performing a low temperature iodine–magnesium exchange reaction. These alkenylmagnesium reagents bearing an alkoxy function in the β-position react directly with aldehydes or with other electrophiles such as a...
作者:Keisuke Fujimoto , Hideki Yorimitsu , Atsuhiro Osuka
来源:[J].European Journal of Organic Chemistry(IF 3.344), 2014, Vol.2014 (20), pp.4327-4334Wiley
摘要:Abstract(#br)Iodine–magnesium exchange between iodoporphyrins and i PrMgCl · LiCl proceeded successfully without decomposition of the porphyrin core. The resulting porphyrinyl Grignard reagents are nucleophilic enough to react with various carbonyl compounds, such as aldeh...
作者:Volker Schulze , Mark Brönstrup , Volker P. W. Böhm ...
来源:[J].Angewandte Chemie International Edition(IF 13.734), 1998, Vol.37 (6), pp.824-826Wiley
摘要:Abstract(#br)An intermediate with a half‐life of 30 minutes has been observed in the iodine–magnesium exchange reaction of 1,1‐diiodoalkanes in THF at −78°C. This intermediate is likely the ate complex 1 . Its characteristic chemistry calls for a mechanistic reconsidera...
作者:Stefan Chassaing , Géraldine Isorez-Mahler , Marie Kueny-Stotz ...
来源:[J].Tetrahedron(IF 2.803), 2015, Vol.71 (20), pp.3066-3078Elsevier
摘要:... The elaborated sequence starts with an iodine–magnesium exchange from an 8-iodinated flavan, thus generating a magnesiated species that then smoothly reacts with a flavone to furnish an adduct, that finally leads to the expected chromophore via dehydration.
作者:Andrew T. Placzek , Thomas S. Scanlan
来源:[J].Tetrahedron(IF 2.803), 2015, Vol.71 (35), pp.5946-5951Elsevier
摘要:Abstract(#br)New synthetic routes for the preparation of isotopically labeled versions of thyroid hormone agonist sobetirome were developed using Knochel's iodine–magnesium exchange. A more efficient synthesis of the thyroid hormone antagonist NH-3 was developed from a common...

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