Detail of "534-15-6"

Reference

Hydroformylation process

Hydroformylation process. Wegman, Richard W. (Union Carbide Corp. , USA). U.S. US 4429165 A 31 Jan 1984, 7 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07C045-49. NCL: 568487000. APPLICATION: US 82-391679 24 Jun 1982. DOCUMENT TYPE: Patent CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) Section cross-reference(s): 23 Catalysts comprising a Co compd., a halide, a trivalent N compd.In this article, certain chemicals are used. Some of their cas registry numbers are 630-08-0 and 603-35-0 such as NPh3 [603-34-9] or DMF [68-12-2], and a trivalent P compd. such as PPh3 [603-35-0] are used for the selective prodn. of AcH [75-07-0] and MeCH(OMe)2 [534-15-6] from MeOH [67-56-1] and a CO-H mixt. Thus, a 300-mL autoclave contg. 37.5 mL MeOH, 112.5 mL EtOCH2CH2OEt, 4 mmol Co(II) acetate [71-48-7], 14 mmol iodine, 1.54 mmol NPh3, and 13.86 mmol PPh3 was pressurized with a 1:1.5 (molar) CO-H mixt. at 170°/4750-5250 psig. The conversion rate was 6.7 g/mol/L/h. The selectivity to AcH and MeCH(OMe)2 was 87%. .

Synthesis of N-vinylacetamide and preparation of some polymers and copolymers

Synthesis of N-vinylacetamide and preparation of some polymers and copolymers. Summerville, Richard H.; Stackman, Robert W. (Celanese Res. Co., Summit, NJ 07901, USA). Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 24(2), 12-13 (English) 1983. CODEN: ACPPAY. ISSN: 0032-3934. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) N-Vinylacetamide [5202-78-8] prepd. by an acetal exchange reaction between acetamide [60-35-5] and di-Me acetal (I) [534-15-6] followed by pyrolysis of the ether amide product at 580° requires less initiator for polymn. than the crude monomer prepd. by the Dawson process. The crude pyrolyzate from the acetal exchange route polymd. in tert-BuOH to give a homopolymer [28408-65-3] with inherent viscosity 1.5 which required high acid concns. and long reflux times (27 h) for hydrolysis. Copolymers of the crude monomer with vinyl acetate required milder conditions (0.1 N HCl, 5-8 h) for hydrolysis. N-Vinylpropionamide [40652-23-1], similarly prepd. from propionamide [79-05-0] and I, polymd. in tert-BuOH to give a homopolymer [90967-56-9] sol. in alcs. and water and acetone-alc. mixts.