该配合物的制备方法为呋喃醛(酮)腙与二异丙基氨基锂(LDA)发生去氢反应后,再与等摩尔量的ZrX4的四氢呋喃溶液反应得到. After preparation of the complex is furan-aldehyde (ketone) hydrazone with lithium diisopropylamide (LDA) dehydrogenase reaction occurs, then an equimolar amount to give a ...
Due to the lower reactivity of ketones than aldehydes, the combination of R2Zn reagent (stoichiometric) with strongly Lewis acidic catalyst, such as Cu(OTf)2and Ti(OPri)4, is highly efficient strategy to promote the alkynylation of ketones. For this type of reaction, hydroxysulfonamide-type ch...
LDA lithium diisopropylamide, KHMDS potassium bis(trimethylsilyl)amide. b Proposed strategy for selective alkylation reaction at the more-hindered α-site. L ligand. c Scope of this allylic alkylation reaction. Full size image However, methods for selective alkylation of unsymmetrical ketones at their...
α‐Oxymethyl Ketone Enolates for the Asymmetric Mannich Reaction. From Acetylene and N‐Alkoxycarbonylimines to β‐Amino Acids[J] . ClaudioPalomo,MikelOiarbide,M. ConcepciónGonzález‐Rego,Arun K.Sharma,Jesús M.García,AlbertoGonzález,CristinaLanda,AnthonyLinden.Angewandte Chemie Internationa...
palladiumquaternary stereocentersPalladium-catalyzed asymmetric allylic alkylation of nonstabilized ketone enolates to generate quaternary centers has been achieved in excellent yield and enantioselectivity. Optimized conditions consist of performing the reaction in the presence of two equivalents of LDA as base...
Palladium-catalyzed asymmetric allylic alkylation of nonstabilized ketone enolates to generate quaternary centers has been achieved in excellent yield and enantioselectivity. Optimized conditions consist of performing the reaction in the presence of two equivalents of LDA as base, one equivalent of trimet...
Palladium-catalyzed asymmetric allylic alkylation of nonstabilized ketone enolates to generate quaternary centers has been achieved in excellent yield and enantioselectivity. Optimized conditions consist of performing the reaction in the presence of two equivalents of LDA as base, one equivalent of trimet...
Optimized conditions consist of performing the reaction in the presence of two equivalents of LDA as base, one equivalent of trimethytin chloride as a Lewis acid, 1,2-dimethoxyethane as the solvent, and a catalytic amount of a chiral palladium complex formed from pi-allyl palladium chloride ...
In the field of chemical kinetics, the proposed technique can supply information on the importance of elementary steps in complex reaction mechanisms. As examples, high-temperature propane pyrolysis and the chemistry of the "unpolluted" troposphere are studied....
Ketogenesis proceeds further through a step-by-step reaction that is catalyzed by 3-hydroxy-3-methylglutaryl (HMG)-CoA synthase 2 (HMGCS2), HMG-CoA lyase (HMGCL), and β-hydroxybutyrate dehydrogenase 1 (BDH1). Nutrients 2022, 14, x FOR PEER REVIEW Nutrients 2022, 14, 4932 3 of 22 3 ...