81860-77-7

Upstream product

• 110-89-4 piperidine 
• 62115-08-6 Acetic acid (E)-1-cyano-2-phenyl-propenyl ester 
• 492-37-5 hydratropic acid 
• 28937-48-6 (Z)-3-methyl-3-phenyloxirane-2-carbonitrile 
• 2620-14-6 2-bromo-1-(piperidin-1-yl)propan-1-one 
• 98-80-6 phenylboronic acid 
• 31508-44-8 2-phenylpropionic acid methyl ester 
• 108-91-8 cyclohexylamine 
• 100-42-5 styrene 
• 5542-49-4 piperidin-1-yl benzoate 
• 201230-82-2 carbon monoxide 
• 2591-86-8 N-Formylpiperidine 
• 74548-68-8 Acetic acid 2-chloro-1-cyano-2-phenyl-propyl ester 
• 25145-43-1 2-phenylpropionyl chloride 

Downstream Products

• 24401-44-3 β-Piperidino-α-methyl styrene 

Relevant academic research and scientific papers

Photoenzymatic Reductions Enabled by Direct Excitation of Flavin-Dependent "Ene"-Reductases

Non-natural photoenzymatic reactions reported to date have depended on the excitation of electron donor-acceptor complexes formed between substrates and cofactors within protein active sites to facilitate electron transfer. While this mechanism has unlocked new reactivity, it limits the types of substrates that can be involved in this area of catalysis. Here we demonstrate that direct excitation of flavin hydroquinone within "ene"-reductase active sites enables new substrates to participate in photoenzymatic reactions. We found that by using photoexcitation these enzymes gain the ability to reduce acrylamides through a single electron transfer mechanism.

Erratum: Photoenzymatic Reductions Enabled by Direct Excitation of Flavin-Dependent 'Ene'-Reductases (J. Am. Chem. Soc. (2021) 143:4 (1735-1739) DOI: 10.1021/jacs.0c11494)

Support by the Department of Energy was inadvertently left out of the Acknowledgments and a coauthor's name was misspelled in the Supporting Information. The scientific part of the manuscript remains unchanged. The complete correct Acknowledgment paragraph is as follows.

Copper-Catalyzed Carbonylative Hydroamidation of Styrenes to Branched Amides

Amides are one of the most ubiquitous functional groups in synthetic and medicinal chemistry. Novel and rapid synthesis of amides remains in high demand. In this communication, a general and efficient procedure for branch-selective hydroamidation of vinylarenes with hydroxyamine derivatives enabled by copper catalysis has been developed for the first time. The reaction proceeds under mild conditions and tolerates a broad range of functional groups. Applying a chiral phosphine ligand, an enantioselective variant of this transformation was achieved, affording a variety of chiral α-amides with excellent enantioselectivities (up to 99 % ee) and high yields.

Palladium-Catalyzed Hydrocarbonylative C-N Coupling of Alkenes with Amides

An efficient palladium-catalyzed hydrocarbonylative C-N coupling of alkenes with amides has been developed. The reaction was performed via hydrocarbonylation of alkenes, followed by acyl metathesis with amides. Both intermolecular and intramolecular react

Pseudomonas stutzeri lipase: A useful biocatalyst for aminolysis reactions

The use of Pseudomonas stutzeri lipase (PSL) as a biocatalyst for aminolysis reactions with bulky substrates has been investigated. PSL compared favorably to Novozym 435 (immobilized Candida antarctica lipase B, NOV435) in the aminolysis of various bulky methyl esters and amines. While NOV435 demonstrated a higher rate of aminolysis with methyl 2-phenylpropionic acid as the acyl donor, PSL outperformed NOV435 with secondary amines as the nucleophile. Methanol inhibition and a low affinity for bulky acyl donors were found to be the two main reasons for relatively low rates in the PSL-catalyzed aminolysis reactions. It was demonstrated that the use of molsieve 4A had a significant effect on the aminolysis rate and amide yield, since it enabled the effective removal of the inhibiting methanol from the reaction mixture.

Ni-catalyzed mild arylation of α-halocarbonyl compounds with arylboronic acids

A simple yet powerful Ni catalyst can be used to promote direct arylations of α-halocarbonyl compounds, including a range of esters, amides, and ketones, with various arylboronic acids under mild conditions. The method tolerates β-hydrogens and functional groups in the substrates and offers reactivity and selectivity profiles that are complementary to those found in the well-established Buchwald-Hartwig approach.

The effective use of substituted benzoic anhydrides for the synthesis of carboxamides

Various carboxamides are synthesized from the corresponding carboxylic acids and amines with high product-selectivities using 2-methyl-6-nitrobenzoic or 2,4,6-trichlorobenzoic anhydride in the presence of 4-(dimethylamino) pyridine.

The synthesis and characterisation of deuteriated amides

Results are reported on the regioselective C-deuteriation of a series of enolates derived from the addition of sec-BuLi to a variety of substituted amides. The outcomes of the reactions are discussed in terms of the structural nature of the amides and the

A facile synthesis of carboxamides by dehydration condensation between free carboxylic acids and amines using O,O′-DI(2-pyridyl) thiocarbonate as a coupling reagent

Carboxamides are prepared in high yields by dehydration condensation between nearly equimolar amounts of free carboxylic acids and amines both of which involve secondary or tertiary alkyl substituted ones with O,O′-di(2-pyridyl) thiocarbonate, a coupling reagent, in the presence of a catalytic amount of 4-(dimethylamino)pyridine.

A convenient method for the preparations of carboxamides and peptides by using di(2-pyridyl) carbonate and O,O′-di(2-pyridyl) thiocarbonate as dehydrating reagents

Preparations of carboxamides and peptides are performed in high yields from free carboxylic acids and amines by dehydration condensation using di(2-Pyridyl) carbonate (DPC) or O,O′-Di(2-Pyridyl) thiocarbonate (DPTC) in the presence of a catalytic amount of 4-(dimethylamino)pyridine (DMAP). The formation of 2-Pyridyl esters, key intermediates of the reaction, from carboxylic acids by using DPC proceeded faster than by using DPTC; therefore, the former carbonate is more efficiently employed in the above condensation reactions.