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:Jérôme Thibonnet , Viet Anh Vu , Laurent Bérillon ...
来源:[J].Tetrahedron(IF 2.803), 2002, Vol.58 (24), pp.4787-4799Elsevier
摘要:Abstract(#br)A general preparation of alkenylmagnesium derivatives bearing an electron-withdrawing function in the α-position (Y=CN, CO 2 R, CONR 2 , SO 2 Ph) has been made possible by using a low temperature (−40 to −30°C) bromine–magnesium exchange with i -PrMgBr in T...
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:... These alkenylmagnesium reagents bearing an alkoxy function in the β-position react directly with aldehydes or with other electrophiles such as acid chlorides, allylic bromides, aryl and alkenyl iodides in the presence of a copper or palladium transition metal catalyst.
作者:Jianhua Han , Lishuai Zong , Cheng Liu ...
来源:[J].Polymer International(IF 2.125), 2016, Vol.65 (5), pp.526-534Wiley
摘要:Abstract(#br)A nickel catalyst promoted the polymerization between various Grignard reagents with 2‐phenyl‐4,6‐bi(4‐fluorophenyl)‐1,3,5‐triazine. The reaction scope was thoroughly investigated and fully characterized. The Sp2‐C − F bond was successful...
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 Wan...
作者:Carl Deutsch , Anja Hoffmann-Röder , Axel Domke ...
来源:[J].Synlett(IF 2.655), 2007, Vol.2007 (05), pp.0737-0740Thieme
摘要:The use of functionalized aryl-Grignard reagents in the copper-mediated S N 2′ substitution of propargylic oxiranes leads to structurally complex α-hydroxyallenes, usually with high yield and diastereoselectivity. Further transformations, such as gold-catalyzed cycloisomer...
作者:Li Guangchen , Szostak Michal
来源:[J].Chemistry (Weinheim an der Bergstrasse, Germany), 2020, Vol.26 (3), pp.611-615PubMed
摘要:The direct transition-metal-free acylation of amides with functionalized Grignard reagents by highly chemoselective N-C cleavage under kinetic control has been accomplished. The method offers rapid and convergent access to functionalized biaryl ketones through transient tetrah...

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