Radical-Cascade Avenue for 3,4-Fused-Ring-Substituted Thiophenes
作者:Abhijeet R. Agrawal、Neha Rani Kumar、Sashi Debnath、Sarasija Das、Chandan Kumar、Sanjio S. Zade
DOI:10.1021/acs.orglett.8b01577
日期:2018.8.17
A single-step intramolecular radical cascade reaction of diynes and thioacetic acid in the presence of a catalytic amount of azobis(isobutyronitrile) as a radical initiator has been developed to synthesize thiophenes. This method allows easy and effective construction of a thiophene scaffold having 3,4-fused-ring substitution and unsubstituted 2,5-positions for further functionalization and polymerization
已经开发出在催化量的偶氮二(异丁腈)作为自由基引发剂的存在下,二炔和硫代乙酸的单步分子内自由基级联反应以合成噻吩。该方法允许容易且有效地构建具有3,4-稠环取代和未取代的2,5-位的噻吩支架,用于进一步的官能化和聚合。使用该方法,合成了环戊[ c ]噻吩,3,4-乙撑二氧噻吩和含噻吩的螺环化合物的衍生物。
Lithium Alkoxyacetylenides: Direct Access by a New and Convenient General Route
作者:Roger H. Smithers
DOI:10.1055/s-1985-31276
日期:——
SMITHERS, R. H., SYNTHESIS, BRD, 1985, N 5, 556-558