Herein, a facile and efficient method for the preparation of allyl amides from the aldehyde of Baylis–Hillman adducts has been developed using a hydroxylamine/methanol system under a catalyst-free condition. The effects of solvents and temperature on the reaction and substituents on the phenyl ring have been examined. This method is best demonstrated by its advantages such as operational simplicity
A series of pyran derivatives (5–27) were synthesized in good yields by utilizing Baylis–Hillman chemistry and were further investigated for their in vitro anticancer, antibacterial, and antifungal activities. Most of the tested compounds exhibited promising antibacterial activity as compared to the standard towards Gram-positive bacterial strains. The compounds 5–7, 11–13, and 17–19 displayed two-fold
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.
The Baylis-Hillman Adducts as Valuable Source for One-Pot Multi-Step Synthesis: A Facile Synthesis of Substituted Piperidin-2-ones
作者:Deevi Basavaiah、Raju Jannapu Reddy、Dandamudi V. Lenin
DOI:10.1002/hlca.200900352
日期:——
A facile, convenient, and one‐pot multi‐step synthesis of substituted piperidin‐2‐ones from the Baylis–Hillman alcohols derived from various aldehydes and acrylonitrile, involving Johnson–Claisen rearrangement, reduction of an α,β‐unsaturated nitrile moiety into the saturated amine‐skeleton, followed by cyclization, in an operationally simple procedure, is described.
On the development of a nucleophilic methylthiolation methodology
作者:Bernardo Basbaum Portinho de Puga Carvalho、Adriane Antonia Pereira Amaral、Pedro Pôssa de Castro、Fernanda Cerqueira Moreira Ferreira、Bruno Araújo Cautiero Horta、Giovanni Wilson Amarante
DOI:10.1039/d0ob01149e
日期:——
yields. The reactionmechanism was investigated through several control experiments, as well as by theoretical calculations employing Density Functional Theory. The results strongly support that a sulfurane and a sulfonium ylide appear as key intermediates and that a Pummerer type rearrangement is also crucial for the formation of this novel reagent. Furthermore, the methylthiolation mechanism is likely