beta-Cyclodextrin (beta-CD) supramolecule was found to be a convenient, green and economical tool in one-pot synthesis of rhodanine scaffolds as a highly efficient mediating agent in aqueous media in which the reaction accelerated to complete in 15min and room temperature. In this work, amines reacted with equimolar ratio of CS2 (not excess ratio of CS2) and then with activated acetylenes in the presence of beta-CD in aqueous media.
US4231786A
申请人:——
公开号:US4231786A
公开(公告)日:1980-11-04
US4405752A
申请人:——
公开号:US4405752A
公开(公告)日:1983-09-20
Synthesis of novel dithiocarbamates and xanthates using dialkyl azodicarboxylates: S N bond formation
characterized by a wide scope, high efficiency and straightforward isolation protocol. The synthetic utility of the dithiocarbamates and xanthates was demonstrated on the preparation of symmetrical and unsymmetricalthioureas, isothiocyanates, and thiocarbamates.