Annelated 12π-electron systems. The synthesis of a dimethylbenzomonodehydro[12]annulene, dimethylmonodehydro[12]annuleno[c]thiophene, -[c]furan and -[b]furan

Annelated 14π-electron systems. The synt

Annelated 14π-electron systems. The synthesis of a dimethylbisdehydro[14]annuleno[c]thiophene, -[b]thiophene and -[b]furan

✍ Richard R. Jones; Julian M. Brown; Franz Sondheimer 📂 Article 📅 1975 🏛 Elsevier Science 🌐 French ⚖ 254 KB

Syntheses of the annelated dimethylmonodehydro[121annulenes I\_, 2, 2, and i, containing a macrocyclic (4;)~membered ring, were described in the preceding Communication. 1s2 It was desirable to make analogous annelated dehydro[14lannulenes, in which the macrocyclic ring is (4E+2)-membered. Synthese