Alkylation of Aldehyde (Arenesulfonyl)hydrazones with Trialkylboranes
作者:George W. Kabalka、John T. Maddox、Ekaterini Bogas、Shane W. Kelley
DOI:10.1021/jo962089q
日期:1997.5.1
(Arenesulfonyl)hydrazone derivatives of aryl aldehydes are readily alkylated by trialkylboranes in the presence of base to generate new organoboranes that may be converted to the corresponding substituted alkanes or alcohols depending upon the reaction conditions chosen. Both tosyl- and trisylhydrazone derivatives can be utilized in the reaction, which tolerates a variety of functional groups, making it a versatile alternative to both the Grignard and Suzuki-coupling reactions.
Cu-MEDIATED ANNULATION FOR THE EFFECTIVE SYNTHESIS OF 3-SUBSTITUTED PHTHALIDES
申请人:Council of Scientific & Industrial Research
公开号:US20150045564A1
公开(公告)日:2015-02-12
The present invention disclosed herein is a novel commercially feasible, one pot synthesis of library of 3-substituted phthalides of formula I via CuCN mediated oxidative cyclization in high yield. Formula I
Selectivities in the Reactions of Alkyl-, Aryl- and Heterosubstituted Organotitanium Compounds Preliminary Communication
作者:Beat Weidmann、Leo Widler、Alan G. Olivero、Christopher D. Maycock、Dieter Seebach
DOI:10.1002/hlca.19810640136
日期:1981.2.4
Solutions of the title compounds R-Ti(OR′)3 (1) are generally available from organolithium (or magnesium) derivatives according to equation 1. It is shown (Table 1) that some heterosubstitutedorganotitaniumcompounds are more stable thermally than their lithium counterparts. The reagents 1 are highly selective carbonylophiles (Tables 1 and 2), their reactivity can be modified by variation of the R′O-group
Anion Relay Chemistry: Access to the Type II ARC Reaction Manifold through a Fundamentally Different Reaction Pathway Exploiting 1-Oxa-2-silacyclopentanes and Related Congeners
作者:Amos B. Smith、Rongbiao Tong、Won-Suk Kim、William A. Maio
DOI:10.1002/anie.201103886
日期:2011.9.12
congener have been synthesized and demonstrated to provide access to typeIIanionrelaychemistry (ARC) through a fundamentally new mechanistic pathway. Similar to previous studies, but contrary to initial hypothesis, Brook rearrangement additives (hexamethylphosphoramide and CuI) are necessary to promote Si migration and anion capture.
截然不同:两种 1-氧杂-2-硅杂环戊烯和一种饱和同系物已被合成,并被证明可以通过一种全新的机制途径提供 II 型阴离子中继化学 (ARC)。与之前的研究类似,但与最初的假设相反,Brook 重排添加剂(六甲基磷酰胺和 CuI)对于促进 Si 迁移和阴离子捕获是必要的。
[EN] SILICON-BASED CROSS COUPLING AGENTS AND METHODS OF THEIR USE<br/>[FR] AGENTS DE COUPLAGE CROISÉ À BASE DE SILICIUM ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV PENNSYLVANIA
公开号:WO2016011231A1
公开(公告)日:2016-01-21
Compositions and methods using silicon-based cross-coupling agents in the formation of carbon-carbon and carbon-nitrogen bonds are described.