Reference

Process for simultaneous production of acetic acid and acetic anhydride

Process for simultaneous production of acetic acid and acetic anhydride. Erpenbach, Heinz; Gradl, Reinhard; Jaegers, Erhard; Seidel, Andreas (Hoechst A.-G., Germany). Eur. Pat. Appl. EP 476333 A2 25 Mar 1992, 7 pp. DESIGNATED STATES: R: AT, BE, CH, DE, ES, FR, GB, IT, LI, NL. (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C07C053-08. ICS: C07C053-12; C07C051-12; C07C051-56. APPLICATION: EP 91-113958 21 Aug 1991. PRIORITY: DE 90-4029917 21 Sep 1990. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) The title process involved the reaction of MeOH and AcOMe with CO in the presence of a metal compd.In this experiment, several chemicals are used like 1702-42-7 and 92641-66-2 , MeI, and an ammonium or phosphonium compd. Thus, MeOH, AcOMe, and CO reacted in the presence of MeI, Ni iodide, and Bu3P+Me I- to give a 98% yield of AcOH and a 95% yield of Ac2O. .

Catalytic carboxylation process for the preparation of propylene carbonate from propylene carbonate and carbon dioxide

Catalytic carboxylation process for the preparation of propylene carbonate from propylene carbonate and carbon dioxide. Lange, Jean-Paul (Shell Internationale Research Maatschappij B. V., Neth.). PCT Int. Appl. WO 2005003113 A1 13 Jan 2005, 18 pp. DESIGNATED STATES: W: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW; RW: AT, BE, BF, BJ, CF, CG, CH, CI, CM, CY, DE, DK, ES, FI, FR, GA, GB, GR, IE, IT, LU, MC, ML, MR, NE, NL, PT, SE, SN, TD, TG, TR. (English). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS: ICM: C07D317-36. ICS: C07C029-12. APPLICATION: WO 2004-EP51270 28 Jun 2004. PRIORITY: EP 2003-254161 30 Jun 2003. DOCUMENT TYPE: Patent CA Section: 28 (Heterocyclic Compounds (More Than One Hetero Atom)) Section cross-reference(s): 45, 67 The prepn. of propylene carbonate comprises contacting propylene oxide with carbon dioxide at 150-250° in the presence of a recycled tetraalkylphosphonium bromide catalyst (e.g.Except for chemicals metioned above, 3115-68-2 and 1702-42-7 are also used., tetrabutylphosphonium bromide). .