2026-06-30T03:24:03Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/60892022-10-31T23:42:08Zcom_10259_3593com_10259_5086com_10259_2604col_10259_3594

Sedano Labrador, Carlos Virumbrales Ortiz, Cintia Suarez Pantiga, Samuel Sanz Díez, Roberto 2021-11-04T09:23:20Z 2021-11-04T09:23:20Z 2021-10 0039-7881 http://hdl.handle.net/10259/6089 10.1055/a-1509-5655 α-Oxy ketones, easily accessible by conventional routes, can be selectively deprotonated generating an enolate intermediate, which upon treatment with paraformaldehyde undergoes an aldol–Tishchenko reaction, leading to relevant 1,2,3-triol fragments in a totally diastereoselective manner. The excellent stereocontrol in the generation of a quaternary stereocenter is attributed to stereoelectronic effects in the Evans intermediate. This methodology allows overcoming some limitations of our previously reported strategy, based on the reaction of α-lithiobenzyl ethers with esters and paraformaldehyde, broadening the scope of the obtained polyols. Synthetic applications of this process include the preparation of a new dilignol model and some functionalized oxetanes. eng info:eu-repo/semantics/openAccess aldol–Tishchenko reaction enolates α-oxy ketones polyol derivatives diastereoselectivity oxetanes Aldol–Tishchenko Reaction of α-Oxy Ketones: Diastereoselective Synthesis of 1,2,3-Triol Derivatives info:eu-repo/semantics/article