Reference

Fluorine-containing aromatic ethers and their preparation

Fluorine-containing aromatic ethers and their preparation. Maruta, Toshimichi; Nishinomiya, Takayuki (Central Glass Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 03236355 A2 22 Oct 1991 Heisei, 9 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: C07C205-37. ICS: C07C217-86; C07C233-27; C07D207-452. APPLICATION: JP 90-230243 31 Aug 1990. PRIORITY: JP 89-333082 22 Dec 1989. DOCUMENT TYPE: Patent CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 35 The title ethers I (Y1, Y2 = F, C1-10 fluoroalkyl; l = 1, 2; m = 1-4; n = 0-4), useful as materials for F-contg. thermosetting resins, are prepd. by treating arom. alcs. II (Y2 = C1-10 fluoroalkyl; l, n = same as I) with arom. nitro compds. 139613-99-3 and 880-78-4 which are cas registry numbers of chemicals are mentioned. III (Z = F, Cl, Br, iodo; m = 1-4) in the presence of a base. Thus, 1,3-bis(2-hydroxyhexafluoro-2-propyl)benzene (IV) was stirred with 3-trifluoromethyl-4-bromonitrobenzene in MeCONMe2 in the presence of CuI at 100° for 48 h to give 1,3-bis[2-(2-trifluoromethyl-4-nitrophenoxy)hexafluoro-2-propyl]benzene (V) (selectivity 82.8%; reactivity of IV 98.3%), which was purified to give 73.0% V with 99.2% purity. .