Hwang, Sun-Hee Kim, Ju-Ryun Lee, Sang Deuk Lee, Hyunjoo Kim, Hoon Sik Kim, Honggon 2024-01-21T01:00:23Z 2024-01-21T01:00:23Z 2021-09-02 2007-07 1226-086X https://pubs.kist.re.kr/handle/201004/134293 Syntheses of methoxynonafluorobutane (C4F9OCH3) and ethoxynonafluorobutane (C4F9OC2H5), which are considered as prospective third generation alternative cleaning agents replacing CFC-113 (CF2ClCFCl2), CH3CCl3, and HCFC-141b (CH3CFCl2), were studied. Heptafluorobutyryl chloride (C3F7COCl) or heptafluorobutyryl fluoride (C3F7COF) was firstly reacted with alkali metal fluoride (KF or CsF) in an aprotic polar solvent to produce alkali metal nonafluorobutoxide. It was consecutively converted to C4F9OCH3 and C4F9OC2H5 through the reaction with alkylating agents such as dimethyl sulfate, methyl trifluoromethane sulfonate and diethyl sulfate. Identification and characterization of major products were carried out by GC-MS, FT-IR, H-1-NMR, and F-19-NMR spectroscopies. English KOREAN SOC INDUSTRIAL ENGINEERING CHEMISTRY FULLY FLUORINATED ALKOXIDES CHEMISTRY FLUORIDE Preparation of methoxy and ethoxy nonafluorobutanes Article 1 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.13, no.4, pp.537 - 544 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 13 4 537 544 scie scopus kci ART001083974 000248517600008 2-s2.0-34547628507 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article FULLY FLUORINATED ALKOXIDES CHEMISTRY FLUORIDE methoxynonafluorobutane ethoxynonafluorobutane perfluoroacyl halide heptafluorobutyryl chloride heptafluorobutyryl fluoride nonafluorobutoxide