One pot protecting group free synthesis of multifunctional biphenyl methyl-C-β-d-glycosides in aqueous medium
摘要:
One pot synthesis of the butenonyl-C-beta-D-glycosides with malononitrile in the presence of K2CO3 in water under mild and green reaction conditions leading to the formation of small library of multifunctional biphenyl methyl-C-beta-D-glycosides in good yields has been reported. The reaction is equally applicable with the substrates having different glycosyl pyranoses and aromatic rings with different substituents. (C) 2010 Elsevier Ltd. All rights reserved.
Compositions and Methods for Reducing Enones to Saturated Alcohols
申请人:YALE UNIVERSITY
公开号:US20210163384A1
公开(公告)日:2021-06-03
The invention relates to novel, scalable synthetic routes that allow for direct reduction of enones to the corresponding saturated alcohols. The invention relates, in certain aspects, to synthetic routes that allow for the reduction of enones to the corresponding ketones. Such reactions take place under mild conditions, are compatible with a wide range of functional groups, and expand the repertoire of existing green chemistry methodology. In certain embodiments, the reactions are run in aqueous solvent.
A novel and efficient direct aldol condensation from ketones and aromatic aldehydes catalyzed by proline–TEA through a new pathway
作者:Jun-feng Wang、Meng Lei、Qin Li、Ze-mei Ge、Xin Wang、Run-tao Li
DOI:10.1016/j.tet.2009.04.052
日期:2009.6
aldol condensation from various ketones and a wide range of aldehydes was catalyzed by l-proline–TEA (triethylamine) in MeOH at room temperature, affording the corresponding (E)-α,β-unsaturated ketones in excellent yields. By using the method, some complicated (E)-α,β-unsaturated ketone C-glycosides were obtained from unmodified ketone C-glycosides and aldehydes. This reaction proceeds through a new
One pot synthesis of the butenonyl-C-beta-D-glycosides with malononitrile in the presence of K2CO3 in water under mild and green reaction conditions leading to the formation of small library of multifunctional biphenyl methyl-C-beta-D-glycosides in good yields has been reported. The reaction is equally applicable with the substrates having different glycosyl pyranoses and aromatic rings with different substituents. (C) 2010 Elsevier Ltd. All rights reserved.