前往化源商城

Mattson Boronate Urea Pinacol Ester

Mattson Boronate Urea Pinacol Ester结构式
Mattson Boronate Urea Pinacol Ester结构式
品牌特惠专场
常用名 Mattson Boronate Urea Pinacol Ester 英文名 Mattson Boronate Urea Pinacol Ester
CAS号 1538637-10-3 分子量 474.20
密度 N/A 沸点 N/A
分子式 C21H21BF6N2O3 熔点 230.39°C
MSDS 美版 闪点 N/A

Urea-catalyzed N-H insertion-arylation reactions of nitrodiazoesters.

J. Org. Chem. 79(11) , 4832-42, (2014)

The power of hydrogen-bond donor catalysis has been harnessed to elicit and control carbene-like reactivity from nitrodiazoesters. Specifically, select ureas have been identified as effective catalysts for N-H insertion and multicomponent coupling reactions o...

Arylation of diazoesters by a transient N-H insertion organocascade.

Angew. Chem. Int. Ed. Engl. 52(43) , 11317-20, (2013)

It takes two: A unique organocatalyzed cascade for the unsymmetric double arylation of α-nitrodiazoesters is described. This organocascade features the strategic use of carbene-activating anilines in conjunction with a urea catalyst, thus allowing for the syn...

Urea-catalyzed construction of oxazinanes.

Org. Biomol. Chem. 11(35) , 5793-7, (2013)

Highly functionalized oxazinanes are efficiently prepared through urea-catalyzed formal [3 + 3] cycloaddition reactions of nitrones and nitrocyclopropane carboxylates. The reaction system is general with respect to both the nitrocyclopropane carboxylates and ...

Internal Lewis acid assisted ureas: tunable hydrogen bond donor catalysts.

Chem. Commun. (Camb.) 49 , 4289-4291, (2013)

The strategic incorporation of internal Lewis acids onto urea scaffolds gives rise to a family of tunable hydrogen bond donor catalysts. The nature of the Lewis acid and associated ligands affects the urea polarization, acidity, and activity in reactions of n...

Boronate urea activation of nitrocyclopropane carboxylates.

Org. Lett. 14(2) , 444-7, (2012)

Boronate ureas operate as catalysts for the activation of nitrocyclopropane carboxylates in nucleophilic ring-opening reactions. A variety of amines were found to open the urea-activated nitrocyclopropane carboxylates, generating highly useful nitro ester bui...

Internal Lewis acid assisted hydrogen bond donor catalysis.

Org. Lett. 13(4) , 716-9, (2011)

Boronate ureas are introduced as a new class of noncovalent catalysts for conjugate addition reactions with enhanced activity. Through intramolecular coordination of the urea functionality to a strategically placed Lewis acid, rate enhancements up to 10 times...