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

✍ Scribed by Richard R. Jones; Julian M. Brown; Franz Sondheimer

• Publisher: Elsevier Science
• Year: 1975
• Tongue: French
• Weight: 254 KB
• Volume: 16
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(00)91209-7

✦ Synopsis

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.

Syntheses of the dimethylbisdehydro[141annuleno[~lfuran 6 3.4 and the dimethyl benzobisdehydroC14lannulene 2 5 have been reported previously. In order to complete the series