Detail of "13569-75-0"

Reference

Carboxylic acid anhydrides

Carboxylic acid anhydrides. Naglieri, Anthony N.; Rizkalla, Nabil (Halcon International, Inc., USA). U.S.Chemicals with cas numbers 603-35-0 and 13569-75-0 also play role. US 4002678 11 Jan 1977, 7 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07C051-54. NCL: 260549000. APPLICATION: US 75-643208 22 Dec 1975. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) Acetic anhydride was prepd. by carbonylation of AcOMe or Me2O in the presence of an iodide using a Ni-Cr catalyst and a promoter comprising a trivalent N or P org. compd. Thus, AcOMe 100, MeI 18, Ni acetate 0.8, Cr carbonyl 2, and 2-pyridinol 1.6 parts were heated with CO (400 psig at room temp.) for 17 h at 150.degree. in a glass-lined bomb to give 38 wt. % Ac2O (54% conversion of ACOMe). .