Gram-Scale Synthesis of the Co(nmp)2 Catalyst to Prepare trans-2,5-Disubstituted Tetrahydrofurans by the Aerobic Oxidative Cyclization of Pent-4-en-1-ols
作者:Barbora Morra、Nicholas A. Morra、Daniel G. MacDonald、Brian L. Pagenkopf
DOI:10.1055/s-0039-1690730
日期:2020.3
Co(nmp)2 is an efficient catalyst for the aerobic oxidative cyclization of pent-4-en-1-ols to give 5-hydroxymethyl trans-tetrahydrofurans (THFs) as single diastereomers in high yield. The trans-THF pharmacophore is of interest because it is found in many biologically active natural products. The three-step synthesis of Co(nmp)2 described here gives the catalyst as a fine powder in 80–85% overall yield
Co(nmp)2是有效的催化剂,可对戊-4-烯-1-醇进行好氧氧化环化,以高收率得到作为单个非对映异构体的5-羟甲基反式-四氢呋喃(THF)。该反式,因为它在许多生物活性天然产物发现-THF药效感兴趣。本文所述的Co(nmp)2的三步合成法以10克规模的总产率80-85%的形式得到了细粉状催化剂。还描述了催化剂在代表性氧化环化中的用途。