1: With lithium in diethyl ether Metallation; 2: With iodine in diethyl ether cyclotetramerization; Further stages.;
参考文献
Lu, Ping; Hong, Haiping; Cai, Guoping; Djurovich, Peter; Weber, William P.; Thompson, Mark E.
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in tetrahydrofuran T=-20 - 20°C; Further byproducts given;
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Eisch, John J.; Piotrowski, Andrzej M.; Aradi, Allen A.; Krueger, Carl; Romao, Maria J.
Zeitschrift fuer Naturforschung, Teil B: Anorganische Chemie, Organische Chemie, 1985 , vol. 40, # 5 p. 624 - 635