An efficient and metal-free synthesis of biaryls and heterobiaryls has been developed via a key three-component reaction of benzylideneacetones, isopropenyl acetate and methyl propiolate under high pressure (9 Kbar) and mild reaction temperature (40 °C) conditions. The described synthetic protocol provide rapid access to novel, highly functionalized and metal-uncontamined 1,1'-biaryls and heterobiaryls
Cytotoxic 1,4-bis(2-oxo-1-cycloalkylmethylene)benzenes and related compounds
作者:Jonathan R Dimmock、Amitabh Jha、Praveen Kumar、Gordon A Zello、J.Wilson Quail、Eliud O Oloo、Jennifer J Oucharek、Mohammed K Pasha、Dallas Seitz、Rajendra K Sharma、Theresa M Allen、Cheryl L Santos、Elias K Manavathu、Erik De Clercq、Jan Balzarini、James P Stables
DOI:10.1016/s0223-5234(01)01294-6
日期:2002.1
series of 1,4-bis(2-oxo-1-cycloalkylmethylene)benzenes 2a-c and 4 and a related acyclic analogue 6a were synthesised and converted to the corresponding Mannich bases 3a-c, 5 and 6b. Evaluation of these compounds againstmurineP388 and L1210 cells as well as human Molt 4/C8 and CEM T-lymphocytes revealed that the Mannich bases were more cytotoxic than the corresponding unsaturated ketones. 1,4-bis
This disclosure concerns novel compounds of Formula (I) or as defined in the specification and compositions comprising such novel compounds. These compounds are useful antiviral agents, especially in inhibiting the function of the NS5A protein encoded by Hepatitis C virus (HCV). Thus, the disclosure also concerns a method of treating HCV related diseases or conditions by use of these novel compounds or a composition comprising such novel compounds.
General Metal-Free Baeyer–Villiger-Type Synthesis of Vinyl Acetates
作者:Belén Poladura、Ángel Martínez-Castañeda、Humberto Rodríguez-Solla、Ricardo Llavona、Carmen Concellón、Vicente del Amo
DOI:10.1021/ol401143q
日期:2013.6.7
Ozone, a cheap, stable, and nonhazardous oxidizing reagent, transforms alpha,beta-unsaturated ketones of defined stereochemistry into their corresponding vinyl acetates through a Baeyer-Villiger reaction. This process is general and straightforward, tolerating a wide range of functional groups.
Eine neue Synthese des 2, 6-Dimethyl-1, 5-anthrazolins (Benzo-dipicolins) und hydrierter Derivate. (54, Mitteilung über Stickstoff-Heterocyclen)