Beyond the Tebbe Olefination: Direct Transformation of Esters into Ketones or Alkenes
作者:Anna M. Domżalska-Pieczykolan、Bartłomiej Furman
DOI:10.1055/s-0039-1691594
日期:2020.4
A direct, effective, and operationally simple transformation of esters into ketones or alkenes by the exclusive action of Tebbe’s reagent has been developed. The transformation utilizes the dual character of Tebbe’s reagent as both a methylenation agent and a rearrangement catalyst in the reaction of a wide range of substituted vinyl ethers. The resulting transformation involves sequential methylenation
[EN] METHOD FOR INCORPORATING PROTECTING ACETAL AND ACETAL ESTER GROUPS, AND ITS APPLICATION FOR THE PROTECTION OF HYDROXYL FUNCTION<br/>[FR] PROCÉDÉ POUR INCORPORER DES GROUPES ACÉTAL ET ESTER D'ACÉTAL PROTECTEURS ET SON APPLICATION POUR LA PROTECTION DE LA FONCTION HYDROXYLE
申请人:INST CHEMII BIOORG POLSKIEJ AKADEMII NAUK
公开号:WO2014148928A1
公开(公告)日:2014-09-25
The present invention is the method for incorporation of acetal and acetal ester groups for protection of hydroxyl function. The method is applied in particular in the processes of RNA synthesis. The method can be employed in the synthesis of nucleosides with acetal and acetal ester groups for the protection of hydroxyl functions. The method according to the invention consists of the reaction of an organic compound containing at least one hydroxyl group, soluble in an aprotic solvent, with a compound of the general formula 1, R1 -S-CH2 -O-R2(1) in the presence of SnCl4, in an aprotic solvent. In the second aspect, the present invention is the method of protecting the hydroxyl function, particularly in position 2', in nucleoside derivatives, based on the incorporation of an acetal or acetal ester group.