摘要
The synthesis of a new type of hetero-macrocyclic polyether 2,3-henzo-1,4,7,13-tetraoxa-10-selenacyclopentadeca-2-ene is deseribed.
The synthesis of a new type of hetero-macrocyclic polyether 2,3-henzo-1,4,7,13-tetraoxa-10-selenacyclopentadeca-2-ene is deseribed.