An Economical Approach to the Synthesis of Unsaturated Thiacrown Ethers

Abstract

A n E c o n o m i c a l A p p r o a c h t o t h e S y n t h e s i s o f U n s a t u r a t e d T h i a c r o w n E t h e r sAbstract: The inexpensive starting material, 1,1-dichloroethylene, was used as a substitute for 1,2-dichloroethylene to synthesize unsaturated thiacrown ethers through the reaction of 1,1-dichloroethylene with sodium sulfide in the presence of a 15-crown-5 catalyst. Besides the compounds containing cis-carbon-carbon double bonds, two unsaturated thiacrown ethers each containing one transcarbon-carbon double bond were also isolated.

Azide–alkyne cycloaddition reactions in water via recyclable heterogeneous Cu catalysts: reverse phase silica gel and thermoresponsive hydrogels

“…Compounds a, 61 b, 62 c, 63 d, 64 e, 65 f, 66 h, 67 i, 67 j, 66 k, 42 l, 68 m, 69 n, 50 and o 70 are known compounds.…”