A protocol for the synthesis of α,β‐unsaturated aldehydes and allylicalcohols from simple allylic hydrocarbons with water via palladium‐catalyzed functionalization of allylic C−H bonds was described. Molecular oxygen is utilized as the sole oxidant in this oxygenation of terminal alkenes. This protocol features good functional group compatibility, broad substrate scope, and high atom‐ and step‐economy
A palladium-catalyzedoxidativeallylation of bis[(pinacolato)boryl]methane to afford the corresponding homoallylic organoboronic esters with moderate to excellent yields is reported. This novel transformation provides an efficient strategy for the construction of homoallylic organoboronic esters in one step with a broad substrate scope. It is proposed that the palladium-catalyzedoxidative allylic
Biocatalytic Racemization of (Hetero)Aryl-aliphatic α-Hydroxycarboxylic Acids byLactobacillus spp. Proceeds via an Oxidation–Reduction Sequence
作者:Bettina M. Nestl、Silvia M. Glueck、Melanie Hall、Wolfgang Kroutil、Rainer Stuermer、Bernhard Hauer、Kurt Faber
DOI:10.1002/ejoc.200600454
日期:2006.10
The biocatalyticracemization of a range of (hetero)aryl- and (di)aryl-aliphaticα-hydroxycarboxylicacids has been achieved by using whole resting cells of Lactobacillus spp. The essentially mild (physiological) reaction conditions ensure the suppression of undesired side reactions, such as elimination, decomposition or condensation. Cofactor/inhibitor studies using a cell-free extract of Lactobacillus
Cascade Multicomponent Synthesis of Indoles, Pyrazoles, and Pyridazinones by Functionalization of Alkenes
作者:Kiran Matcha、Andrey P. Antonchick
DOI:10.1002/anie.201406464
日期:2014.10.27
The development of multicomponent reactions for indole synthesis is demanding and has hardly been explored. The present study describes the development of a novel multicomponent, cascade approach for indole synthesis. Various substituted indole derivatives were obtained from simple reagents, such as unfunctionalized alkenes, diazonium salts, and sodium triflinate, by using an established straightforward
Concise synthesis of valuable chiral N -Boc- β -benzyl- β -amino acid via construction of chiral N -Boc-3-benzyl-5-oxoisoxazolidine through cross-metathesis/conjugate addition/oxidation
作者:Hong-Tao Jiang、Hao-Ling Gao、Cheng-Sheng Ge
DOI:10.1016/j.cclet.2016.10.005
日期:2017.2
Abstract Valuable chiral N-Boc-β-benzyl-β-amino acid was concisely synthesized via construction of chiral N-Boc-3-benzyl-5-oxoisoxazolidine through cross-metathesis/conjugateaddition/oxidation. All of the starting materials for the synthesis of chiral N-Boc-β-benzyl-β-amino acid are cheap, and two-step short procedure make it easy for the rapid construction of various chiral β-arylmethyl-β-amino acids