Hexamethylenetetramine as a Cheap and Convenient Alternative Catalyst in the Baylis-Hillman Reaction: Synthesis of Aromatic Compounds with Anti-Malarial Activity
作者:M. Vasconcellos、R. O. M. A. de Souza、Bruno Meireles、Lúcia Aguiar
DOI:10.1055/s-2004-822409
日期:——
Hexamethylenetetramine (7, HMT) is a cheap alternative catalyst in the Baylis-Hillman reaction between aromatic aldehydes and methyl acrylate or acrylonitrile. The use of 0.1 equiv or 1.0 equiv of HMT proved to be an efficient catalyst for the preparation of 1,8a-c,h, 9a-c and 10 in good to high yieds. The Baylis-Hillman adducts 9c and 10 show high potency against P. falciparum in vitro (anti-malarial
An efficient synthesis of Baylis–Hillman adducts of acrylamide: Pd-catalyzed hydration of Baylis–Hillman adducts of acrylonitrile
作者:Eun Sun Kim、Hyun Seung Lee、Jae Nyoung Kim
DOI:10.1016/j.tetlet.2009.08.127
日期:2009.11
An efficient palladium-catalyzed two-step protocol for the synthesis of Baylis–Hillmanadducts of acrylamide was developed. The method involved the preparation of Baylis–Hillmanadducts of acrylonitrile and a Pd-catalyzed hydration of nitrile with acetaldoxime.
Expeditious synthesis of 5,6,7,8-tetrahydro-imidazo[1,2-a]pyrimidin-2-ones and 3,4,6,7,8,9-hexahydro-pyrimido[1,2-a]pyrimidin-2-ones
作者:Richa Pathak、Sanjay Batra
DOI:10.1016/j.tet.2007.06.115
日期:2007.9
convenient synthesis of new 5,6,7,8-tetrahydro-imidazo[1,2-a]pyrimidin-2-ones and 3,4,6,7,8,9-hexahydro-pyrimido[1,2-a]pyrimidin-2-ones from the Baylis–Hillman adducts of acrylonitrile and their derivatives is described. A common strategy employed to achieve the syntheses of title compounds involved generation of diamines from different Baylis–Hillman derivatives followed by treatment with cyanogen bromide
Studies on montmorillonite K10-microwave assisted isomerisation of Baylis–Hillman adduct. Synthesis of E-trisubstituted alkenes and synthetic application to lignan core structures by vinyl radical cyclization
作者:Ponnusamy Shanmugam、Paramasivan Rajasingh
DOI:10.1016/j.tet.2004.07.067
日期:2004.10
The isomerisation of acetates from the Baylis–Hillman adducts with Mont.K10 clay-microwave combination furnished E-trisubstituted alkenes in high yield. The simple Baylis–Hillman adducts with trimethyl orthoformate and unsaturated alcohols under clay catalytic condition gave densely functionalised-isomerized products under solvent free condition. Application of the propargyl derivatives thus obtained
RATE ACCELERATION OF THE BAYLIS-HILLMAN REACTION USING CRYSTALLINE CYCLODEXTRIN COMPLEXES
作者:L. Rajender Reddy、K. Rama Rao
DOI:10.1080/00304940009356284
日期:2000.4
The Baylis-Hillmanreaction produces a highly functionalized vinyl system useful for the elaboration of a variety of compounds including several natural products.I-' However, the major drawback is the rate at which this reaction occurs. Reaction times of one week or more are common, and even of one month have also been reported.4 Aromatic aldehydes having wide application in the synthesis of multifunctional