Directed <i>ortho</i>-metalation–nucleophilic acyl substitution strategies in deep eutectic solvents: the organolithium base dictates the chemoselectivity
作者:Simone Ghinato、Giuseppe Dilauro、Filippo Maria Perna、Vito Capriati、Marco Blangetti、Cristina Prandi
DOI:10.1039/c9cc03927a
日期:——
Directed ortho metalation (DoM) or nucleophilic acylsubstitution (SNAc) can be efficiently programmed on the same aromatic carboxylic acid amide, in a choline chloride-based eutectic mixture, by simply switching the nature of the organolithium reagent. Telescoped, one-pot ortho-lithiation/Suzuki–Miyaura cross-couplings have also been demonstrated for the first time in Deep Eutectic Solvents.
定向邻位金属化(d Ò M)或亲核酰基取代(S Ñ AC)可以有效地设定为在同芳族羧酸酰胺,在基于氯化物胆碱共熔混合物,通过简单地切换有机锂试剂的性质。伸缩式单罐正锂化/铃木-宫浦交叉联结也已在深共晶溶剂中首次得到证明。
Evaluating<i>cis</i>-2,6-Dimethylpiperidide (<i>cis</i>-DMP) as a Base Component in Lithium-Mediated Zincation Chemistry
作者:David R. Armstrong、Jennifer A. Garden、Alan R. Kennedy、Sarah M. Leenhouts、Robert E. Mulvey、Philip O'Keefe、Charles T. O'Hara、Alan Steven
DOI:10.1002/chem.201301180
日期:2013.9.27
amide component in the lithium amide, Et2Zn and TMEDA system. Under certain conditions, the cis‐DMP base system was found to give improved results in comparison to HMDS and diisopropylamide (DA), and comparable results to a TMP system. Two novel complexes isolated from reactions of the di‐tert‐butylzincate and crystallographically characterised, namely the pre‐metallation complex [(iPr)2N(Ph)CO}LiZn(cis‐DMP)tBu2]
金属化化学的最新进展集中在混合金属(通常被食用)组合物中的庞大的仲酰胺 2,2,6,6-四甲基哌啶 (TMP)。然而,前体胺 TMP(H) 相当昂贵,因此更便宜的替代品将受到欢迎。因此,本研究旨在开发更便宜的非 TMP 基混合金属碱,并且由于选择顺式‐2,6-二甲基哌啶 ( cis ‐ DMP) 作为替代酰胺,开发顺式DMP锌酸盐化学而受到的关注较少。与其富含甲基的对应物 TMP 相比。一种新的二乙基锌酸锂,[(TMEDA)LiZn( cis -DMP)Et 2 ] (TMEDA= N , N , N' ,N'-四甲基乙二胺)是通过 Li( cis- DMP)、Et 2 Zn 和 TMEDA的共络合合成的,并通过 NMR(包括 DOSY)光谱和 X 射线晶体学表征,显示出双核接触离子对排列。通过使用N , N-二异丙基苯甲酰胺作为测试芳香族底物,[(TMEDA)LiZn( cis- DMP)Et
Derivatives of 6-Aminopenicillanic Acid. III. Reactions with N-Substituted Phthalamic Acids
作者:Y. G. Perron、W. F. Minor、L. B. Crast、A. Gourevitch、J. Lein、L. C. Cheney
DOI:10.1021/jm01240a015
日期:1962.9.1
BOYD G. V.; MONTEIL R. L., J. CHEM. SOC. PART 1, 1978, NO 11, 1338-1350
作者:BOYD G. V.、 MONTEIL R. L.
DOI:——
日期:——
[EN] PHOTOSENSITIVE RESIN COMPOSITION, CURED FILM, LAMINATE, METHOD FOR PRODUCING CURED FILM, AND SEMICONDUCTOR DEVICE<br/>[FR] COMPOSITION DE RÉSINE PHOTOSENSIBLE, FILM DURCI, STRATIFIÉ, PROCÉDÉ DE PRODUCTION DE FILM DURCI, ET DISPOSITIF À SEMI-CONDUCTEUR<br/>[JA] 感光性樹脂組成物、硬化膜、積層体、硬化膜の製造方法、および半導体デバイス