° C.

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 * 1) * 1962, Rudolph J. Angelo, "Linearly Fused Polycyclic Polymers and Process", US Patent 3245974, page 2 col. 5:
 * "It is convenient to run the cyclizations at a temperature between 25° C. and 100° C."
 * 1) * 1962, Rudolph J. Angelo, "Linearly Fused Polycyclic Polymers and Process", US Patent 3245974, page 2 col. 5:
 * "It is convenient to run the cyclizations at a temperature between 25° C. and 100° C."
 * 1) * 1962, Rudolph J. Angelo, "Linearly Fused Polycyclic Polymers and Process", US Patent 3245974, page 2 col. 5:
 * "It is convenient to run the cyclizations at a temperature between 25° C. and 100° C."
 * 1) * 1962, Rudolph J. Angelo, "Linearly Fused Polycyclic Polymers and Process", US Patent 3245974, page 2 col. 5:
 * "It is convenient to run the cyclizations at a temperature between 25° C. and 100° C."
 * 1) * 1962, Rudolph J. Angelo, "Linearly Fused Polycyclic Polymers and Process", US Patent 3245974, page 2 col. 5:
 * "It is convenient to run the cyclizations at a temperature between 25° C. and 100° C."