Unsaturated Macrocyclic Compounds. XXV.1 The Synthesis of Bisdehydro-[20]-annulene, [20]Annulene, Tridehydro-[30]annulene and [30]Annulene from 1,5,9-Decatriyne
Unsaturated Macrocyclic Compounds. XXV.1 The Synthesis of Bisdehydro-[20]-annulene, [20]Annulene, Tridehydro-[30]annulene and [30]Annulene from 1,5,9-Decatriyne