摘要：Di-and trialkylphenanthrenes were synthesized. 1-Ethyl-6-isopropyl-, m. p. 65.0∼65.5°(picrate : m. p. 118∼120°, trinitrobenzene complex : m. p. 147∼148°). 6-Ethyl-1-isopropyl-, m. p. 61∼63°(trinitrobenzene complex : m. p. 151∼152°). 1, 2-Dimethyl-6-isopropyl-, m. p. 109∼110°(picrate : m. p. 140∼141°, trinitrobenzene complex : m. p. 157°). 2, 6-Diethyl-1-methyl-, m. p. 57∼63°(trinitrobenzene complex : m. p. 137∼145°). 1, 2-Diethyl-6-methyl-, m. p. 47∼49°(trinitrobenzene complex : m. p. 169∼170°). 1-Isopropyl-6, 9-dimethyl-, m. p. 41∼43°(picrate : m. p. 159∼161°, trinitrobenzene complex : m. p. 186∼188°). 2-Ethyl-5-methyl-, oil, (trinitrobenzene complex : m. p. 112∼113°).
