Nucleophilic Addition of Organocerium Reagents to α-Alkoxy Hydrazones: A New Type of Elimination Reaction to α-HydroxynitrilesWe studied the nucleophilic addition of organocerium reagents to α-alkoxy hydrazones. The results depend upon the organocerium reagents, the nature of protection for the ...
ChemInform Abstract: Nucleophilic Addition of Organocerium Reagents to α-Alkoxy Hydrazones: A New Type of Elimination Reaction to α-Hydroxynitrilesreactions of organo-metal compoundscarbamic acid derivatives (acyclic compounds)nitriles (acyclic compounds)...
The reaction is extended to other ortho-disubstituted phenols. Elimination reactions of the tert-butyl groups from the products are achieved by a Friedel-Crafts reaction using either trifluoromethanesulfonic acid or aluminum trichloride as catalysts. 展开 ...
Generation of stable gene-edited plant lines using clustered regularly interspaced short palindromic repeats (CRISPR)–CRISPR-associated protein 9 (Cas9) requires a lengthy process of outcrossing to eliminate CRISPR–Cas9-associated sequences and produce transgene-free lines. We have addressed this issue ...
acyl transfer and the subsequent rearrangement process for the Schmidt-type reaction (Fig.1d). Thus, this cascade activation strategy would demonstrate simple and available aryldiazonium salts as a cyclic nitrogenated partner akin to azides, but with remarkable elimination of associated hazards....
Synthesis of E -α,β-Unsaturated Ketones with Complete Stereoselectivity via Sequential Aldol-Type/Elimination Reactions Promoted by Samarium Diiodide or Chromium Dichloride 喜欢 0 阅读量: 9 作者:C José,RS Humberto,C Carmen,D Pamela DOI: 10.1055/s-2006-933146 被引量: 29 ...
Ion imaging coupled with (2 + 1) resonance-enhanced multiphoton ionization (REMPI) technique is employed to probe CO(v″ = 0) fragments at different rotational levels following photodissociation of methyl formate (HCOOCH3) at 234 nm. When the rotational level, J″CO, is larger than 24, only...
The reaction conditions are mild and can tolerate a broad range of substrates. Moreover, no oxidant is involved during the entire transformation, with only H2 and N2 being generated as byproducts. This reaction opens up a new avenue for Grignard-type reactions by enabling the use of naturally...
the development of molecular probes responsive to SHMT has not yet been realized. This is because SHMT catalyzes an essential yet simple reaction; thus, the substrates that can be accepted into the active site of SHMT are limited. Here, we focus on the SHMT-catalyzed retro-aldol reaction rathe...
The direct reaction between tantalum pentachloride and benzylmagnesium chloride leads to pentabenzyltantalum, previously prepared by a two-step synthesis. The X-ray structure of pentabenzyltantalum reveals a square-pyramidal geometry. Pentabenzyltantalum was found to be an efficient starting material for...