FACILE AND HIGHLY SELECTIVE SYNTHESIS OF 2,2-DIALKYL-1,5-LACTONES BY THE CALBOXYLATION OF PRIMARY, TERTIARY-1,4-DIOLS WITH FORMIC ACID OR COPPER(I)CARBONYLS IN THE PRESENCE OF CONCENTRATED SULFURIC ACID
作者:Yukio Takahashi、Norihiko Yoneda、Hiroshi Nagai
DOI:10.1246/cl.1982.1187
日期:1982.8.5
The carboxylation of primary, tertiary-1,4-diols with 100% formicacid or copper(I)carbonyls and carbonmonoxide in the presence of 97∼100% H2SO4 at room temperature and under atmospheric pressure gave 2,2-dialkyl substituted 1,5-lactones in high yields.
Fe(III)‐Catalyzed Aerobic Oxidation of 1,4‐Diols<sup>†</sup>
作者:Junlin Li、Jinxian Liu、Chunling Fu、Shengming Ma
DOI:10.1002/cjoc.202200768
日期:2023.8.15
Aerobic oxidation has been catching more and more attention because of its atom economy and environmental friendliness. Oxidation of diols is a challenge due to various oxidative products. Thus, highly selective aerobic oxidation affording specific products is of current interest. In this work, a combination of Fe(NO3)3·9H2O/TEMPO/KCl catalysis has been identified as an efficient recipe for the aerobic
Block copolymers of polycarbonate resin and a polyester derived from a dimer fatty acid and a selected class of organic diol exhibit thermoplastic and elastomeric properties. They are useful compositions for molding articles such as automotive parts.