Synthesis of [18]Annulene

Structure of [18]Annulene

C18H18

Principal investigator	Franz Sondheimer
Publication year	1962
Synthesis type	Total
Number of steps	3 (linear)
References	J. Am. Chem. Soc. 1962, 84, 260. J. Am. Chem. Soc. 1962, 84, 274.

Part 1 of 1

intermediate structure

Pyr, Cu(OAc)2.H2O

55 °C, 3 h, 6%

See the Eglinton Reaction

intermediate structure

KOt-Bu

PhH, t-BuOH

Reflux, 30 min, 52%

intermediate structure

H2, Pd/C

1 atm

PhH

RT, 90 min, 25%

intermediate structure

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